CN102660693A - Aluminum alloy treated by using TiN powder and BeH2 powder, and preparation method thereof - Google Patents
Aluminum alloy treated by using TiN powder and BeH2 powder, and preparation method thereof Download PDFInfo
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 31
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000000843 powder Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title abstract description 10
- RWASOQSEFLDYLC-UHFFFAOYSA-N beryllium dihydride Chemical compound [BeH2] RWASOQSEFLDYLC-UHFFFAOYSA-N 0.000 title abstract 2
- 239000000956 alloy Substances 0.000 claims abstract description 46
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 45
- 238000005266 casting Methods 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000000155 melt Substances 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 24
- 229910000737 Duralumin Inorganic materials 0.000 claims description 22
- 229910052782 aluminium Inorganic materials 0.000 claims description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 19
- 229910052757 nitrogen Inorganic materials 0.000 claims description 19
- 229910052719 titanium Inorganic materials 0.000 claims description 19
- 239000012535 impurity Substances 0.000 claims description 16
- 239000004411 aluminium Substances 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 229910052749 magnesium Inorganic materials 0.000 claims description 11
- 229910052804 chromium Inorganic materials 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000005243 fluidization Methods 0.000 claims description 8
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 229910052725 zinc Inorganic materials 0.000 claims description 8
- 229910052790 beryllium Inorganic materials 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 7
- 238000003723 Smelting Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000007872 degassing Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 230000002045 lasting effect Effects 0.000 claims description 5
- 238000010309 melting process Methods 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000004512 die casting Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 13
- 238000007670 refining Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 239000006104 solid solution Substances 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract description 2
- 238000009827 uniform distribution Methods 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract 2
- 230000006911 nucleation Effects 0.000 abstract 1
- 238000010899 nucleation Methods 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 239000010936 titanium Substances 0.000 description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 150000001875 compounds Chemical class 0.000 description 11
- 239000011777 magnesium Substances 0.000 description 11
- 239000013078 crystal Substances 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 7
- 150000004767 nitrides Chemical class 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 229910000765 intermetallic Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 230000005496 eutectics Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000005204 segregation Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 238000007669 thermal treatment Methods 0.000 description 4
- 229910018125 Al-Si Inorganic materials 0.000 description 3
- 229910018520 Al—Si Inorganic materials 0.000 description 3
- 229910000846 In alloy Inorganic materials 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 229910015136 FeMn Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000003870 refractory metal Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910018167 Al—Be Inorganic materials 0.000 description 1
- 229910018575 Al—Ti Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 230000018199 S phase Effects 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 229910018594 Si-Cu Inorganic materials 0.000 description 1
- 229910008465 Si—Cu Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000005036 potential barrier Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to an aluminum alloy treated by using TiN powder and BeH2 powder, and a preparation method thereof. The process comprises the step of adding 1.0-2.0% of Ti element, 1.0-2.0% of N element and 1.0-2.0% of Be element in powder form into a melted deformation aluminum alloy, and the addition of the power in fluidized form into the aluminum alloy melt along with protective gases is such that a specific surface area which is much greater than common bulk materials is obtained, rapid dispersion and sufficient contact with the melt can be realized, and time for dispersion and time for uniform distribution are significantly shortened. At the same time, by using the high strength aluminum alloy of the invention in a casting process, heterogeneous nucleation cores can be increased effectively in an alloy solidification process, so that grain refining effect is achieved, and the strength of the cast alloy is enhanced. Moreover, the added elements can promote formation of interstitial atom and interstitial phase, solubility in alpha (Al) solid solutions is high at high temperature and is low at room temperature, so that the cast alloy has a high heat-processibility characteristic, and the strength and the hardness of the cast alloy are significantly improved after heat treatment.
Description
Technical field
The present invention relates to a kind of aldural, also relate to its preparation method.
Background technology
In the Al-Mg-Si-Cu line aluminium alloy,, form high hardness compound easily because composition and pouring technology are improper.Especially for silicon content less than 12% (massfraction), when the content of Mn+Fe is higher than 0.8% (massfraction), be very easy to generate
Al 12 Si (FeMn) 3 Compound.Because the hardness after this duraluminum is shaped is higher, tool wear is serious during mechanical workout, the visible white light tone hard point of heaving of the surperficial naked eyes after the processing, and microscopic examination hard point is bone shape or irregular particle shape.Composition through this hard point of power spectrum composition measurement consists of Al-Si-Mn-Fe, its form very easily with alloy in primary silicon obscure mutually.Part after the duraluminum with this hard point compound is shaped, poor in processability not only, and have a strong impact on the roughness of finished surface and the quality of anodic film.
Titanium becomes effective heterojunction nucleus because of forming intermetallic compound in duraluminum, and the effect that suppresses the sosoloid crystal grain-growth is arranged and makes grain refining.But traditional addition means is to adopt the flux of Al-Ti master alloy or Al-Ti-B master alloy or Ti and B directly to add in the aluminum alloy melt to go.
Because the big one-tenth branch of density is deposited in the foundry goods bottom in alloying constituent or the compound, float on top on the little composition of density.For example add this refractory metal of Ti and Al and form dystectic flaky compound Al for crystal grain thinning
3Ti can early crystallize out from alloy liquid; When growing up to greatly, just sink to producing the gravity segregation of local rules easily; Can on the foundry goods fracture, see the compound of the white bright ash of surfacing when segregation is serious, primary silicon thick in the hypereutectic Al-Si duraluminum also forms segregation easily owing to density is less.
In addition when this alloy liquid before cast owing to stir the inhomogeneous eutectic segregation that causes, concentrate the place in Eutectic Silicon in Al-Si Cast Alloys, the high fragility of hardness is big, the process tool wearing and tearing are greatly; The position that Eutectic Silicon in Al-Si Cast Alloys is few forms α (Al) sosoloid soft spots, and intensity is low, adds not only sticking cutter in man-hour, worsens processing characteristics, under the effect of cutting force, can make the distortion of α (Al) sosoloid cause machined surface hickie to occur.
Simultaneously, when adopting this duraluminum to cast, the normal appearance mainly contains oxide inclusion, molding material and flux slag inclusion etc. various being mingled with in the foundry goods that casting is accomplished.Wherein, be mingled with al oxide the most general.Especially in containing the duraluminum of Mg, majority is mingled with and is aluminum oxide and magnesian mixture, so in the aluminium alloy smelting process, the content of oxide inclusion is one of important mark matter of reflection aluminium liquid metallurgical quality.
Be can prevent oxidation, the scaling loss, air-breathing of magnesium elements in the melting and casting of duraluminum; Improve the metallurgical quality of alloy and the density of surface film oxide; Can also form compound with impurity F e, make needle-like iron become a shape, the recoil of foundry goods and model in the time of also can preventing to pour into a mould.But the Al-Be master alloy costs an arm and a leg, and this master alloy of melting is bigger to the harm of human body.
This shows: the forming property of present aluminum alloy materials during except the large-scale ingot blank of founding is relatively poor; Large-scale ingot blank is not high in the hardening capacity of heat treatment process, tempering resistance is relatively poor and can not satisfy higher mechanical property requirements or some property (as heat-resisting, anti-corrosion) etc., is significant deficiency yet.These defectives make it in the process of strong materials of weight such as field of engineering technology instead of steel goods and structure, form the technological breakpoint that is difficult to cross over.
Summary of the invention
In order to overcome the deficiency of prior art, the present invention provides a kind of employing TiN and BeH
2Duraluminum of powder treatment and preparation method thereof can overcome the deficiency that has aluminium alloy capability now, improves its obdurability, plasticity and hardening capacity, for efficient deep processing provides high-end base material.
A kind of employing TiN and BeH
2The duraluminum of powder treatment is characterized in that by percentage to the quality, comprises 0.4～0.8% Si; Fe smaller or equal to 0.7%, 0.15～0.4% Cu, Mn smaller or equal to 0.15%; 0.04～0.35% Cr, 0.8～1.2% Mg, Zn smaller or equal to 0.25%; 1.0～2.0% Ti, 0.29～0.58% N and 0.19～0.38% Be, surplus is Al and unavoidable impurities; The content of single impurity is no more than 0.05% of total mass per-cent, and content of impurities is no more than 0.15% of total mass per-cent.
A kind of preparation described employing TiN and BeH
2The method of the duraluminum of powder treatment is characterized in that step is following:
Step 1: aluminium ingot is added in the smelting furnace heating make it to melt fully, add the Si of total product mass percent 0.4～0.8% then by prescription, Fe smaller or equal to 0.7%; 0.15～0.4% Cu; Mn smaller or equal to 0.15%, 0.04～0.35% Cr, 0.8～1.2% Mg; Zn smaller or equal to 0.25% and smaller or equal to 0.15% Ti dissolves fully and melts; Said melting process is accomplished in enclosed environment;
Step 2:, obtain alloy melt 700～1000 ℃ of insulations down;
Step 3: adopt mixed gas that aluminium alloy melt is carried out the degassing and purifying operation, and will account for the TiN of total product mass percent 1.29～2.58% and 0.23～0.46% BeH
2Powder joins in the aluminium alloy melt with above-mentioned gas with the fluidization mode and mixes, and makes TiN and BeH
2In aluminium alloy melt, be evenly distributed, and lasting ventilation finishes until reaction; Said mixed gas is: nitrogen or rare gas element or nitrogen mix according to arbitrary proportion with rare gas element and obtain;
Step 4: temperature adjustment to 680 after reaction finishes～730 ℃ obtains the aluminium alloy melt that melting is accomplished.
Aluminium ingot in the step 1 is replaced with molten aluminum liquid.
A kind of with described employing TiN and BeH
2The method that the duraluminum of powder treatment is cast; It is characterized in that: the aluminium alloy melt longshore current groove of claim 2 melting is toppled over come out of the stove; To vertical water cooling casting machine system, casting processing use ingot blank, particularly above large-scale slab ingot of cast thickness 500mm and the pole more than the diameter 500mm.
A kind of with described employing TiN and BeH
2The method that the duraluminum of powder treatment is cast; It is characterized in that: the aluminium alloy melt metaideophone of claim 2 melting is gone in the mold of foundry goods; Use metal mold, sand mold or mixed type casting mode; Adopt gravitational casting, pressure die casting or counter-pressure casting technology, the aluminum alloy casting of y alloy y foundry goods, particularly casting large-scale, thin-walled or complex construction.
Employing TiN provided by the invention and BeH
2Duraluminum of powder treatment and preparation method thereof, in wrought aluminium alloy with the TiN of Powdered adding 1.29～2.58% and 0.23～0.46% BeH
2, add in the aluminium alloy melt process with protective gas with the fluidization form, have the specific surface area more much bigger than general cake mass, can realize disperseing fast and fully contacting with melt, significantly shortened and disperseed and the uniform time.Adopt aldural of the present invention simultaneously in castingprocesses, can in alloy graining process, effectively increase heterogeneous forming core core, thereby reach the effect of grain refining, strengthen alloy strength; And the element that adds can promote to form interstitial atom and gap mutually; During high temperature in α (Al) sosoloid solubleness big, and very little when room temperature, thereby make alloy have higher heat-treatability matter; After the thermal treatment, its intensity and hardness all have significant improvement.
Make a concrete analysis of as follows:
Without before adding above-mentioned element, except that the common solution that form various elements, also contain compound phase that more following intermetallics form in the melt at this alloy:
Mg
2Si phase, (FeMn)
3Si
2Al
15, α phase (Al
12Fe
3Si), S phase (Al
2CuMg);
These metallic compounds when melt cools off because the minimum free energy principle of system, can not stable existence in the crystal grain that forms; Will be under the driving that lattice distortion can differ from move and concentrate to crystal boundary, simultaneously, because the saturation solubility of alloying element in aluminum substrate descends along with temperature and significantly reduces; So along with the cooling of melt, oversaturated melt is constantly separated out the intermetallic compound that is rich in alloying element, these compounds are in the intergranular enrichment; Be difficult for to each other merging, in microtexture, become thick intergranular compound group, alloy is produced crisp sclerosis influence; Worsen the alloy casting forming property, reduce its homogeneity, toughness, solidity to corrosion and through hardening performance.So; When alloy graining becomes the substruction of supersaturated solid solution matrix+intergranular metallic compound; Be commonly referred to pure as-cast structure, the alloy with this tissue just can have the mechanical property and other technical indicator of satisfying the demand after must passing through the thermal treatment of " solid solution+timeliness ".
Though, can improve through the thermal treatment of formulation optimization processing and raising alloy property, still still there are a lot of defectives in alloy itself: insufficient strength is high, can not cast big specification type ingot etc.
The present invention is through relatively selecting; The nitride of having developed transition element is handled the mode of melt; Through adding an amount of Ti, N, Be element, decompose Ti, Be metal that the back produces atomic state, do not had under the simple substance state between atoms metal with the d/s electronics potential barrier that the lattice energy of tightly packed generation between the powerful metal bond energy that produces and similar atom forms of combining closely; Merge with " naked attitude " and a large amount of on every side matrix atoms; Form solution and metallic compound altogether, and the leading phase when becoming crystallization and grain refining are mutually, the while also is the High-Temperature Strengthening phase.Therefore, nitride has solved refractory metal and in aluminium liquid, has dissolved difficult, the difficult problem of uniform distribution with the decomposition under the generation high temperature in the fluidization adding melt and the disperse state of formation, has realized the microcosmic homogenizing distribution of lattice distortion ability and the refinement of crystal grain.
The nitrogen that in fusion process, charges in addition helps aluminium synthetic AlN in 800～1000 ℃ nitrogen atmosphere.Because the AlN that N and Al reaction generates is an atomic crystal, genus quasi-diamond nitride the highlyest is stabilized to 2200 ℃; Room temperature strength is high, and intensity is slower with the rising decline of temperature, can effectively improve the hot strength and the resistance to corrosion of alloy; Thermal conductivity is good, and thermal expansivity is little, can improve the body material thermal shock resistance.Therefore, work as N
2When charging into the high temperature aluminium alloys melt, itself has just had the activity that reacts with multiple metallic gold.So the concentration of temperature when suitably regulating the cleaning molten operation and protectiveness nitrogen, the content of AlN in the adjustable melt, this further provides method for the content of regulating transition metal in the melt.
Joining the degree that the nitride in the melt decomposes in addition, change along with the different of the stability of nitride itself and melt temperature, promptly react and have certain reversibility, is a kind of dynamic balance.The saturation solubility of most of transition element in molten aluminium is less, and the maximum solid solution degree of dechromisation, titanium, vanadium, zirconium occurs in outside the peritectic temperature, and the maximum solid solution degree of other elements all occurs in eutectic temperature; Solubleness at room temperature is all less than 0.1%wt.
It is thus clear that: because the means of using the fluidization nitride to handle in the present invention; Integrate the multiple effects of strengthening matrix and crystal grain thinning; Replace master alloy, make duraluminum manufacturing concern no longer be limited by the master alloy manufacturer, help creating the green production line of " nearly moulding, short flow process, intensification "; Energy-saving and cost-reducing, reduce comprehensive cost; Simultaneously, in heat treatment process, owing to formed excellent material microstructure; The unrelieved stress of ingot blank is less; Therefore can significantly improve thermal treatment usefulness, improve the hardening capacity of ingot blank, when comparing with similar alloy; Can produce thicker blank (bar that sheet material that thickness 500mm is above and diameter 500mm are above) with " casting+heat treatment mode ", (realize " rolling " on the plate manufacturing technology of thickness 15～200mm) to cast generation at series specification.
Generally speaking, the invention has the beneficial effects as follows:
In molten aluminium, caused multiple grain refining element, particle, thickization that prevents matrix and strengthening phase had good result.In cooled aluminum substrate, caused stable high interstitial atom and gap mutually, become new efficient strengthening phase, the intensity of material and hardness are improved.
Below in conjunction with embodiment the present invention is further specified.
Embodiment
Embodiment 1:
A kind of employing TiN and BeH
2The duraluminum of powder treatment by percentage to the quality, comprises 0.4% Si, 0.7% Fe; 0.15% Cu, 0.15% Mn, 0.04% Cr, 0.8% Mg; 0.25% Zn, 0.15% Ti, 1.0% Ti, 1.0% N, 1.0% Be; Surplus is Al and unavoidable impurities, and the content of every kind of impurity is no more than 0.05% of total mass per-cent, and the content of all impurity is no more than 0.15% of total mass per-cent.
The present invention also provides the preparation method of said aldural, adds TiN and BeH with the Combined Processing mode
2, may further comprise the steps:
Step 1: the component according to said aldural is got the raw materials ready, and comprises the Si that accounts for total product mass percent 0.4%, 0.7% Fe, 0.15% Cu, 0.15% Mn, 0.04% Cr, 0.8% Mg, 0.25% Zn, 0.15% Ti;
Step 2: in smelting furnace, add aluminium ingot or molten aluminum liquid earlier, heating makes it to melt fully, adds getting the raw materials ready of step 1 earlier by formula rate, makes it to dissolve fully and melt, and 700～1000 ℃ of insulations down, obtains alloy melt after the refining; Melting process is accomplished in enclosed environment;
Step 3: use the mixed gas of nitrogen or rare gas element or nitrogen and rare gas element arbitrary proportion that alloy melt is carried out the degassing and purifying operation, and lasting ventilation finishes until reaction; To account for the TiN of total product mass percent 1.0% and 1.0% BeH simultaneously
2Powder joins in the alloy melt with above-mentioned gas with the fluidization mode; Stir, make TiN and BeH
2In alloy melt, be evenly distributed, and fully react with alloy melt; Leave standstill, temperature adjustment to 680～730 ℃, obtain the aluminium alloy melt that melting is accomplished.
Embodiment 2:
A kind of employing TiN and BeH
2The duraluminum of powder treatment by percentage to the quality, comprises 0.6% Si, 0.5% Fe; 0.25% Cu, 0.1% Mn, 0.15% Cr, 1.0% Mg; 0.2% Zn, 0.1% Ti, 1.5% Ti, 1.5% N, 1.5% Be; Surplus is Al and unavoidable impurities, and the content of every kind of impurity is no more than 0.05% of total mass per-cent, and the content of all impurity is no more than 0.15% of total mass per-cent.
The present invention also provides the preparation method of said aldural, adds TiN and BeH with the Combined Processing mode
2, may further comprise the steps:
Step 1: the component according to said aldural is got the raw materials ready, and comprises the Si that accounts for total product mass percent 0.6%, 0.5% Fe, 0.25% Cu, 0.1% Mn, 0.15% Cr, 1.0% Mg, 0.2% Zn, 0.1% Ti;
Step 2: in smelting furnace, add aluminium ingot or molten aluminum liquid earlier, heating makes it to melt fully, adds getting the raw materials ready of step 1 earlier by formula rate, makes it to dissolve fully and melt, and 700～1000 ℃ of insulations down, obtains alloy melt after the refining; Melting process is accomplished in enclosed environment;
Step 3: use the mixed gas of nitrogen or rare gas element or nitrogen and rare gas element arbitrary proportion that alloy melt is carried out the degassing and purifying operation, and lasting ventilation finishes until reaction; To account for the TiN of total product mass percent 1.5% and 1.5% BeH simultaneously
2Powder joins in the alloy melt with above-mentioned gas with the fluidization mode; Stir, make TiN and BeH
2In alloy melt, be evenly distributed, and fully react with alloy melt; Leave standstill, temperature adjustment to 680～730 ℃, obtain the aluminium alloy melt that melting is accomplished.
Embodiment 3:
A kind of employing TiN and BeH
2The duraluminum of powder treatment by percentage to the quality, comprises 0.8% Si, 0.5% Fe; 0.4% Cu, 0.09% Mn, 0.35% Cr, 1.2% Mg; 0.1% Zn, 0.06% Ti, 2.0% Ti, 2.0% N, 2.0% Be; Surplus is Al and unavoidable impurities, and the content of every kind of impurity is no more than 0.05% of total mass per-cent, and the content of all impurity is no more than 0.15% of total mass per-cent.
The present invention also provides the preparation method of said aldural, adds TiN and BeH with the Combined Processing mode
2, may further comprise the steps:
Step 1: the component according to said aldural is got the raw materials ready, and comprises the Si that accounts for total product mass percent 0.8%, 0.5% Fe, 0.4% Cu, 0.09% Mn, 0.35% Cr, 1.2% Mg, 0.1% Zn, 0.06% Ti;
Step 2: in smelting furnace, add aluminium ingot or molten aluminum liquid earlier, heating makes it to melt fully, adds getting the raw materials ready of step 1 earlier by formula rate, makes it to dissolve fully and melt, and 700～1000 ℃ of insulations down, obtains alloy melt after the refining; Melting process is accomplished in enclosed environment;
Step 3: use the mixed gas of nitrogen or rare gas element or nitrogen and rare gas element arbitrary proportion that alloy melt is carried out the degassing and purifying operation, and lasting ventilation finishes until reaction; To account for the TiN of total product mass percent 2.0% and 2.0% BeH simultaneously
2Powder joins in the alloy melt with above-mentioned gas with the fluidization mode; Stir, make TiN and BeH
2In alloy melt, be evenly distributed, and fully react with alloy melt; Leave standstill, temperature adjustment to 680～730 ℃, obtain the aluminium alloy melt that melting is accomplished.
After the aldural liquid of employing the inventive method melting is come out of the stove, carry out the Foundry Production of different goods respectively along following two kinds of flow processs.
Flow process one: the longshore current groove is toppled over and is come out of the stove, and to vertical water cooling casting machine system, casting processing use ingot blank, particularly above large-scale slab ingot of cast thickness 500mm and the pole more than the diameter 500mm.
Flow process two: metaideophone is gone in the mold of foundry goods, uses metal mold, sand mold or mixed type casting mode, adopts gravitational casting, pressure die casting or counter-pressure casting technology, the aluminum alloy casting of y alloy y foundry goods, particularly casting large-scale, thin-walled or complex construction.
Claims (5)
1. one kind is adopted TiN and BeH
2The duraluminum of powder treatment is characterized in that by percentage to the quality, comprises 0.4～0.8% Si; Fe smaller or equal to 0.7%, 0.15～0.4% Cu, Mn smaller or equal to 0.15%; 0.04～0.35% Cr, 0.8～1.2% Mg, Zn smaller or equal to 0.25%; 1.0～2.0% Ti, 0.29～0.58% N and 0.19～0.38% Be, surplus is Al and unavoidable impurities; The content of single impurity is no more than 0.05% of total mass per-cent, and content of impurities is no more than 0.15% of total mass per-cent.
2. one kind prepares claim 1 described employing TiN and BeH
2The method of the duraluminum of powder treatment is characterized in that step is following:
Step 1: aluminium ingot is added in the smelting furnace heating make it to melt fully, add the Si of total product mass percent 0.4～0.8% then by prescription, Fe smaller or equal to 0.7%; 0.15～0.4% Cu; Mn smaller or equal to 0.15%, 0.04～0.35% Cr, 0.8～1.2% Mg; Zn smaller or equal to 0.25% and smaller or equal to 0.15% Ti dissolves fully and melts; Said melting process is accomplished in enclosed environment;
Step 2:, obtain alloy melt 700～1000 ℃ of insulations down;
Step 3: adopt mixed gas that aluminium alloy melt is carried out the degassing and purifying operation, and will account for the TiN of total product mass percent 1.29～2.58% and 0.23～0.46% BeH
2Powder joins in the aluminium alloy melt with above-mentioned gas with the fluidization mode and mixes, and makes TiN and BeH
2In aluminium alloy melt, be evenly distributed, and lasting ventilation finishes until reaction; Said mixed gas is: nitrogen or rare gas element or nitrogen mix according to arbitrary proportion with rare gas element and obtain;
Step 4: temperature adjustment to 680 after reaction finishes～730 ℃ obtains the aluminium alloy melt that melting is accomplished.
3. employing TiN according to claim 2 and BeH
2The method of the duraluminum of powder treatment is characterized in that: the aluminium ingot in the step 1 is replaced with molten aluminum liquid.
4. one kind with claim 1 described employing TiN and BeH
2The method that the duraluminum of powder treatment is cast; It is characterized in that: the aluminium alloy melt longshore current groove of claim 2 melting is toppled over come out of the stove; To vertical water cooling casting machine system, casting processing use ingot blank, particularly above large-scale slab ingot of cast thickness 500mm and the pole more than the diameter 500mm.
5. one kind with claim 1 described employing TiN and BeH
2The method that the duraluminum of powder treatment is cast; It is characterized in that: the aluminium alloy melt metaideophone of claim 2 melting is gone in the mold of foundry goods; Use metal mold, sand mold or mixed type casting mode; Adopt gravitational casting, pressure die casting or counter-pressure casting technology, the aluminum alloy casting of y alloy y foundry goods, particularly casting large-scale, thin-walled or complex construction.
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| CN105369085A (en) * | 2015-12-15 | 2016-03-02 | 常熟市虹桥铸钢有限公司 | Casting alloy with good liquidity |
| CN105937001A (en) * | 2016-06-29 | 2016-09-14 | 贵州华科铝材料工程技术研究有限公司 | Aluminum alloy material replacing QT600 wind turbine blade and forging forming method of aluminum alloy material |
| CN106119636A (en) * | 2016-06-29 | 2016-11-16 | 贵州华科铝材料工程技术研究有限公司 | A kind of aluminum alloy materials substituting QT500 blade wheel and extrusion process thereof |
| CN110293225A (en) * | 2018-03-23 | 2019-10-01 | 通用汽车环球科技运作有限责任公司 | Al alloy powder for powder bed fusion increasing material manufacturing technique |
| CN116287876A (en) * | 2023-03-02 | 2023-06-23 | 海安宏宇合金材料有限公司 | High-performance aluminum alloy material free of heat treatment and preparation method thereof |
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| CN116287876A (en) * | 2023-03-02 | 2023-06-23 | 海安宏宇合金材料有限公司 | High-performance aluminum alloy material free of heat treatment and preparation method thereof |
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