CN104087802A - Enhanced magnesium alloy and preparation method thereof - Google Patents
Enhanced magnesium alloy and preparation method thereof Download PDFInfo
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- CN104087802A CN104087802A CN201410358109.2A CN201410358109A CN104087802A CN 104087802 A CN104087802 A CN 104087802A CN 201410358109 A CN201410358109 A CN 201410358109A CN 104087802 A CN104087802 A CN 104087802A
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000956 alloy Substances 0.000 claims abstract description 99
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 98
- 239000011777 magnesium Substances 0.000 claims abstract description 24
- 238000007670 refining Methods 0.000 claims description 35
- 230000032683 aging Effects 0.000 claims description 30
- 238000000137 annealing Methods 0.000 claims description 25
- 239000002994 raw material Substances 0.000 claims description 20
- 238000005096 rolling process Methods 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 18
- 238000003723 Smelting Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 10
- 239000000155 melt Substances 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 229910052748 manganese Inorganic materials 0.000 claims description 9
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 6
- 229910052749 magnesium Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910052776 Thorium Inorganic materials 0.000 claims description 5
- 229910001626 barium chloride Inorganic materials 0.000 claims description 5
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 claims description 5
- 238000005242 forging Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 229910052735 hafnium Inorganic materials 0.000 claims 4
- 229910052718 tin Inorganic materials 0.000 claims 4
- 229910018229 Al—Ga Inorganic materials 0.000 claims 2
- 229910018580 Al—Zr Inorganic materials 0.000 claims 2
- 229910052693 Europium Inorganic materials 0.000 claims 2
- 229910052689 Holmium Inorganic materials 0.000 claims 2
- 229910003023 Mg-Al Inorganic materials 0.000 claims 2
- 229910052797 bismuth Inorganic materials 0.000 claims 2
- 229910052733 gallium Inorganic materials 0.000 claims 2
- 229910052702 rhenium Inorganic materials 0.000 claims 2
- 229910052715 tantalum Inorganic materials 0.000 claims 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims 1
- 229910001634 calcium fluoride Inorganic materials 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 229910052582 BN Inorganic materials 0.000 description 23
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 23
- 239000002245 particle Substances 0.000 description 22
- 239000011701 zinc Substances 0.000 description 14
- 229910052725 zinc Inorganic materials 0.000 description 10
- 229910052750 molybdenum Inorganic materials 0.000 description 9
- 229910052759 nickel Inorganic materials 0.000 description 9
- 229910018131 Al-Mn Inorganic materials 0.000 description 8
- 229910018185 Al—Co Inorganic materials 0.000 description 8
- 229910018182 Al—Cu Inorganic materials 0.000 description 8
- 229910018461 Al—Mn Inorganic materials 0.000 description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- QQHSIRTYSFLSRM-UHFFFAOYSA-N alumanylidynechromium Chemical compound [Al].[Cr] QQHSIRTYSFLSRM-UHFFFAOYSA-N 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 229910052804 chromium Inorganic materials 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 229910052746 lanthanum Inorganic materials 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- 239000002071 nanotube Substances 0.000 description 5
- 229910052721 tungsten Inorganic materials 0.000 description 5
- 229910052720 vanadium Inorganic materials 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 235000010216 calcium carbonate Nutrition 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention provides an enhanced magnesium alloy. The enhanced magnesium alloy contains the following components by weight percent: 5.5-6.5% of Al, 2.7-3.3% of Mn, 2.0-2.15% of Zr, 3.2-3.8% of Ta, 0.6-0.8% of Bi, 4.1-4.3% of Sn, 0.3-0.5% of Re, 0.7-0.9% of Th, 0.7-0.9% of Ga, 0.2-0.4% of Te, 1.2-1.4% of Hf, 0.4-0.6% of Eu, 0.6-0.8% of Ho and the balance of Mg. The invention also provides a preparation method of the alloy. The alloy has good corrosion resistance and mechanical properties.
Description
Technical field
The invention belongs to magnesium alloy materials field, especially a kind of enhanced magnesium alloy and preparation method thereof.
Background technology
Magnesium alloy is the 3rd metalloid structured material growing up after iron and steel and aluminium alloy, is to add other elementary composition alloys taking magnesium as base.Be characterized in: density little (1.8g/cm3 magnesium alloy left and right), specific tenacity is high, larger than Young's modulus, good heat dissipation, shock absorbing is good, and the loading capacity that withstands shocks is larger than aluminium alloy, and the corrosive nature of resistance to organism and alkali is good.Main alloy element has aluminium, zinc, manganese, cerium, thorium and a small amount of zirconium or cadmium etc.It also has electromagnetic shielding and capability of resistance to radiation is strong, easily machining, and the series of advantages such as easy recovery, have extremely important application prospect in automobile, electronic apparatus, traffic, aerospace and defence and military field.But the microtexture of routine casting magnesium alloy is thicker, and precipitated phase and precipitated phase also thicker, and at high temperature very easily alligatoring, thus cause its room temperature and hot strength undesirable, be difficult to meet the demand of high performance structures material.
Summary of the invention
The object of the present invention is to provide a kind of novel enhanced magnesium alloy and preparation method thereof.
For reaching this object, the present invention by the following technical solutions:
A kind of novel enhanced magnesium alloy, contains according to weight percent content: Y:0.7-0.9%, Al:6.3-6.5%, Mn:4.2-4.8%, Zn:3.1-3.3%, Cr:3.2-4.2%, Ca:2.3-2.5%, Co:1.3-1.5%, La:1.2-1.4%, W:0.4-0.6%, Mo:0.45-0.55%, Ni:0.21-0.42%, V:0.23-0.43%, Cu:1.8-2.8%, boron nitride nanometer tube particle: 18-20%, surplus is Mg, and described boron nitride nanometer tube particle is of a size of 90-150 μ m.
Further, contain according to weight percent content: Y:0.7%, Al:6.3%, Mn:4.2%, Zn:3.1%, Cr:3.2%, Ca:2.3%, Co:1.3%, La:1.2%, W:0.4%, Mo:0.45%, Ni:0.21%, V:0.23%, Cu:1.8%, boron nitride nanometer tube particle: 18%, surplus is Mg, and described boron nitride nanometer tube particle is of a size of 90 μ m.
The making method of described novel enhanced magnesium alloy, comprises the following steps:
(1) raw material is prepared: carry out raw material preparation according to weight percent content, described raw material is pure Mg ingot, Mg-Y master alloy, pure Al ingot, pure Zn, Al-Cr master alloy, Al-Ca master alloy, Al-Co master alloy, Mg-La master alloy, Mg-W master alloy, pure Mo, Al-V master alloy, Al-Mn master alloy, pure Ni, Al-Cu master alloy, boron nitride nanometer tube particle;
(2) preheating: by 700-720 DEG C of preheating of boron nitride nanometer tube particle 3 hours;
(3) melting: adopt gas atmosphere molten alloy in resistance furnace, smelting temperature is 780-800 DEG C first adds pure Mg ingot, after pure magnesium ingot melts completely in smelting furnace; Add successively pure Al ingot, pure Zn, pure Mo, pure Ni, until completely melted; Add successively again Mg-Y master alloy, Al-Cr master alloy, Al-Ca master alloy, Al-Co master alloy, Mg-La master alloy, Mg-W master alloy, Al-V master alloy, Al-Mn master alloy, Al-Cu master alloy, after all raw materials melt completely, stir; Stir in the magnesium alloy liquation of melting particle doped the boron nitride nano-tube after preheating again, the magnesium alloy liquation stirring after doping is left standstill to 15-30 minute;
(4) refining: smelting furnace is cleaned up and is preheated to 810～820 DEG C and put into again magnesium alloy and carry out refining, add while stirring heat resistance magnesium alloy refining agent, refining time is 8-12 minute, after refining is complete, leave standstill 12～14 minutes, the consisting of of described heat resistance magnesium alloy refining agent 800～810 DEG C of insulations: BaCl2:11～15%; CaCO3:8～10%; MgCl2:30-40%; Surplus is KCl;
(5) steps of manufacturing blanks: it is in the swage tool of 410-430 DEG C that magnesium alloy refining liquid is cast to preheating temperature, pouring temperature is 760-780 DEG C, producing specification is Ф 1m, length is the foundry goods of 5m, foundry goods is placed on and within the scope of 460-480 DEG C, carries out solution treatment in 28-30 hour, then carry out shrend, the foundry goods after quenching is put in the resistance furnace of 250 DEG C to artificial aging 45 hours, make magnesium alloy blank;
(6) deformation process: a. high temperature forging cogging: heating blank to temperature is 460～480 DEG C of insulation 3～6h; Carry out two to hammer cogging, be forged into the slab that thickness is 10cm; Reduction in pass is 45%, and every 2 passages are forged after annealing 2.5h, and annealing temperature is 460-480 DEG C; B. heated roll to temperature is 400-430 DEG C; C. heating slab to temperature is 510-530 DEG C, is incubated after 45-55 minute, adopts the method for multi-pass small deformation amount that heavy plate rolling is become to 5cm thin plate, and the speed of rolls is 1m/s; Every time rolling draught is 26-28%, after every time rolling, melts down annealing, and annealing temperature is 460～480 DEG C, and annealing time is 50～60 minutes;
(7) ageing treatment: the thin plate after rolling is carried out to artificial aging 38-48h, and aging temp is 280-320 DEG C, then at 320-340 DEG C, carry out ageing treatment for the second time, aging time is 40-45h.
Beneficial effect of the present invention is: the present invention is by adding boron nitride nano-tube in magnesium alloy to, thereby obtain granule enhancement type magnesium alloy, this magnesium alloy has higher intensity and good machining property, corresponding Mg alloy castings manufacturing technology steps is simple, and Mg alloy castings is with low cost.Application prospect of the present invention is good.
Embodiment
embodiment 1
A kind of novel enhanced magnesium alloy, contains according to weight percent content: Y:0.7%, Al:6.3%, Mn:4.2%, Zn:3.1%, Cr:3.2%, Ca:2.3%, Co:1.3%, La:1.2%, W:0.4%, Mo:0.45%, Ni:0.21%, V:0.23%, Cu:1.8%, boron nitride nanometer tube particle: 18%, surplus is Mg, and described boron nitride nanometer tube particle is of a size of 90 μ m.
A making method for novel enhanced magnesium alloy, comprises the following steps:
(1) raw material is prepared: carry out raw material preparation according to weight percent content, described raw material is pure Mg ingot, Mg-Y master alloy, pure Al ingot, pure Zn, Al-Cr master alloy, Al-Ca master alloy, Al-Co master alloy, Mg-La master alloy, Mg-W master alloy, pure Mo, Al-V master alloy, Al-Mn master alloy, pure Ni, Al-Cu master alloy, boron nitride nanometer tube particle;
(2) preheating: by 700 DEG C of preheatings of boron nitride nanometer tube particle 3 hours;
(3) melting: adopt gas atmosphere molten alloy in resistance furnace, smelting temperature is 780 DEG C first adds pure Mg ingot, after pure magnesium ingot melts completely in smelting furnace; Add successively pure Al ingot, pure Zn, pure Mo, pure Ni, until completely melted; Add successively again Mg-Y master alloy, Al-Cr master alloy, Al-Ca master alloy, Al-Co master alloy, Mg-La master alloy, Mg-W master alloy, Al-V master alloy, Al-Mn master alloy, Al-Cu master alloy, after all raw materials melt completely, stir; Stir in the magnesium alloy liquation of melting particle doped the boron nitride nano-tube after preheating again, the magnesium alloy liquation stirring after doping is left standstill to 15 minutes;
(4) refining: smelting furnace is cleaned up and is preheated to 810 DEG C and put into again magnesium alloy and carry out refining, add while stirring heat resistance magnesium alloy refining agent, refining time is 8 minutes, after refining is complete, leave standstill 12 minutes, the consisting of of described heat resistance magnesium alloy refining agent 800 DEG C of insulations: BaCl2:11%; CaCO3:8%; MgCl2:30%; Surplus is KCl;
(5) steps of manufacturing blanks: it is in the swage tool of 410 DEG C that magnesium alloy refining liquid is cast to preheating temperature, pouring temperature is 760 DEG C, producing specification is Ф 1m, length is the foundry goods of 5m, foundry goods is placed on and within the scope of 460 DEG C, carries out solution treatment in 28 hours, then carry out shrend, the foundry goods after quenching is put in the resistance furnace of 250 DEG C to artificial aging 45 hours, make magnesium alloy blank;
(6) deformation process: a. high temperature forging cogging: heating blank to temperature is 460 DEG C of insulation 3h; Carry out two to hammer cogging, be forged into the slab that thickness is 10cm; Reduction in pass is 45%, and every 2 passages are forged after annealing 2.5h, and annealing temperature is 460 DEG C; B. heated roll to temperature is 400 DEG C; C. heating slab to temperature is 510 DEG C, is incubated after 45 minutes, adopts the method for multi-pass small deformation amount that heavy plate rolling is become to 5cm thin plate, and the speed of rolls is 1m/s; Every time rolling draught is 26%, after every time rolling, melts down annealing, and annealing temperature is 460 DEG C, and annealing time is 50 minutes;
(7) ageing treatment: the thin plate after rolling is carried out to artificial aging 38h, and aging temp is 280 DEG C, then at 320 DEG C, carry out ageing treatment for the second time, aging time is 40h.
embodiment 2:
A kind of novel enhanced magnesium alloy, contains according to weight percent content: Y:0.8%, Al:6.4%, Mn:4.5%, Zn:3.2%, Cr:3.7%, Ca:2.4%, Co:1.4%, La:1.3%, W:0.5%, Mo:0.5%, Ni:0.31%, V:0.33%, Cu:2.3%, boron nitride nanometer tube particle: 19%, surplus is Mg, and described boron nitride nanometer tube particle is of a size of 120 μ m.
A making method for novel enhanced magnesium alloy, comprises the following steps:
(1) raw material is prepared: carry out raw material preparation according to weight percent content, described raw material is pure Mg ingot, Mg-Y master alloy, pure Al ingot, pure Zn, Al-Cr master alloy, Al-Ca master alloy, Al-Co master alloy, Mg-La master alloy, Mg-W master alloy, pure Mo, Al-V master alloy, Al-Mn master alloy, pure Ni, Al-Cu master alloy, boron nitride nanometer tube particle;
(2) preheating: by 710 DEG C of preheatings of boron nitride nanometer tube particle 3 hours;
(3) melting: adopt gas atmosphere molten alloy in resistance furnace, smelting temperature is 790 DEG C first adds pure Mg ingot, after pure magnesium ingot melts completely in smelting furnace; Add successively pure Al ingot, pure Zn, pure Mo, pure Ni, until completely melted; Add successively again Mg-Y master alloy, Al-Cr master alloy, Al-Ca master alloy, Al-Co master alloy, Mg-La master alloy, Mg-W master alloy, Al-V master alloy, Al-Mn master alloy, Al-Cu master alloy, after all raw materials melt completely, stir; Stir in the magnesium alloy liquation of melting particle doped the boron nitride nano-tube after preheating again, the magnesium alloy liquation stirring after doping is left standstill to 23 minutes;
(4) refining: smelting furnace is cleaned up and is preheated to 815 DEG C and put into again magnesium alloy and carry out refining, add while stirring heat resistance magnesium alloy refining agent, refining time is 10 minutes, after refining is complete, leave standstill 13 minutes, the consisting of of described heat resistance magnesium alloy refining agent 805 DEG C of insulations: BaCl2:13%; CaCO3:9%; MgCl2:35%; Surplus is KCl;
(5) steps of manufacturing blanks: it is in the swage tool of 420 DEG C that magnesium alloy refining liquid is cast to preheating temperature, pouring temperature is 770 DEG C, producing specification is Ф 1m, length is the foundry goods of 5m, foundry goods is placed on and within the scope of 470 DEG C, carries out solution treatment in 29 hours, then carry out shrend, the foundry goods after quenching is put in the resistance furnace of 250 DEG C to artificial aging 45 hours, make magnesium alloy blank;
(6) deformation process: a. high temperature forging cogging: heating blank to temperature is 470 DEG C of insulation 5h; Carry out two to hammer cogging, be forged into the slab that thickness is 10cm; Reduction in pass is 45%, and every 2 passages are forged after annealing 2.5h, and annealing temperature is 470 DEG C; B. heated roll to temperature is 420 DEG C; C. heating slab to temperature is 520 DEG C, is incubated after 50 minutes, adopts the method for multi-pass small deformation amount that heavy plate rolling is become to 5cm thin plate, and the speed of rolls is 1m/s; Every time rolling draught is 27%, after every time rolling, melts down annealing, and annealing temperature is 470 DEG C, and annealing time is 55 minutes;
(7) ageing treatment: the thin plate after rolling is carried out to artificial aging 43h, and aging temp is 300 DEG C, then at 330 DEG C, carry out ageing treatment for the second time, aging time is 43h.
embodiment 3:
A kind of novel enhanced magnesium alloy, contains according to weight percent content: Y:0.9%, Al:6.5%, Mn:4.8%, Zn:3.3%, Cr:4.2%, Ca:2.5%, Co:1.5%, La:1.4%, W:0.6%, Mo:0.55%, Ni:0.42%, V:0.43%, Cu:2.8%, boron nitride nanometer tube particle: 20%, surplus is Mg, and described boron nitride nanometer tube particle is of a size of 150 μ m.
A making method for novel enhanced magnesium alloy, comprises the following steps:
(1) raw material is prepared: carry out raw material preparation according to weight percent content, described raw material is pure Mg ingot, Mg-Y master alloy, pure Al ingot, pure Zn, Al-Cr master alloy, Al-Ca master alloy, Al-Co master alloy, Mg-La master alloy, Mg-W master alloy, pure Mo, Al-V master alloy, Al-Mn master alloy, pure Ni, Al-Cu master alloy, boron nitride nanometer tube particle;
(2) preheating: by 720 DEG C of preheatings of boron nitride nanometer tube particle 3 hours;
(3) melting: adopt gas atmosphere molten alloy in resistance furnace, smelting temperature is 800 DEG C first adds pure Mg ingot, after pure magnesium ingot melts completely in smelting furnace; Add successively pure Al ingot, pure Zn, pure Mo, pure Ni, until completely melted; Add successively again Mg-Y master alloy, Al-Cr master alloy, Al-Ca master alloy, Al-Co master alloy, Mg-La master alloy, Mg-W master alloy, Al-V master alloy, Al-Mn master alloy, Al-Cu master alloy, after all raw materials melt completely, stir; Stir in the magnesium alloy liquation of melting particle doped the boron nitride nano-tube after preheating again, the magnesium alloy liquation stirring after doping is left standstill to 30 minutes;
(4) refining: smelting furnace is cleaned up and is preheated to 820 DEG C and put into again magnesium alloy and carry out refining, add while stirring heat resistance magnesium alloy refining agent, refining time is 12 minutes, after refining is complete, leave standstill 14 minutes, the consisting of of described heat resistance magnesium alloy refining agent 810 DEG C of insulations: BaCl2:15%; CaCO3:10%; MgCl2:40%; Surplus is KCl;
(5) steps of manufacturing blanks: it is in the swage tool of 430 DEG C that magnesium alloy refining liquid is cast to preheating temperature, pouring temperature is 780 DEG C, producing specification is Ф 1m, length is the foundry goods of 5m, foundry goods is placed on and within the scope of 480 DEG C, carries out solution treatment in 28-30 hour, then carry out shrend, the foundry goods after quenching is put in the resistance furnace of 250 DEG C to artificial aging 45 hours, make magnesium alloy blank;
(6) deformation process: a. high temperature forging cogging: heating blank to temperature is 480 DEG C of insulation 6h; Carry out two to hammer cogging, be forged into the slab that thickness is 10cm; Reduction in pass is 45%, and every 2 passages are forged after annealing 2.5h, and annealing temperature is 480 DEG C; B. heated roll to temperature is 430 DEG C; C. heating slab to temperature is 530 DEG C, is incubated after 55 minutes, adopts the method for multi-pass small deformation amount that heavy plate rolling is become to 5cm thin plate, and the speed of rolls is 1m/s; Every time rolling draught is 28%, after every time rolling, melts down annealing, and annealing temperature is 480 DEG C, and annealing time is 60 minutes;
(7) ageing treatment: the thin plate after rolling is carried out to artificial aging 48h, and aging temp is 320 DEG C, then at 340 DEG C, carry out ageing treatment for the second time, aging time is 45h.
the performance of the alloy that embodiment 1-3 obtains is listed in the table below
| Embodiment | Tensile strength | Yield strength | Unit elongation |
| 1 | 432MPa | 361MPa | 3.9% |
| 2 | 437MPa | 372MPa | 3.62% |
| 3 | 445MPa | 379MPa | 4.12 % |
Claims (3)
1. an enhanced magnesium alloy, is characterized in that, contains according to weight percent content: Al:5.5-6.5%, Mn:2.7-3.3%, Zr:2.0-2.15%, Ta:3.2-3.8%, Bi:0.6-0.8%, Sn:4.1-4.3%, Re:0.3-0.5%, Th:0.7-0.9%, Ga:0.7-0.9%, Te:0.2-0.4%, Hf:1.2-1.4%, Eu:0.4-0.6%, Ho:0.6-0.8%, surplus is Mg.
2. enhanced magnesium alloy as claimed in claim 1, is characterized in that, contains according to weight percent content: Al:5.5%, Mn:2.7%, Zr:2.0%, Ta:3.2%, Bi:0.6%, Sn:4.1%, Re:0.3%, Th:0.7%, Ga:0.7%, Te:0.2%, Hf:1.2%, Eu:0.4%, Ho:0.6%, surplus is Mg.
3. the preparation method of the enhanced magnesium alloy as described in claim 1-2, is characterized in that:
(1) raw material is prepared: carry out raw material preparation according to weight percent content, described raw material is pure Mg ingot, Mg-Al master alloy, pure Al ingot, pure Mn, Al-Zr master alloy, Al-Ta master alloy, Al-Bi master alloy, pure Sn, Mg-Re master alloy, pure Th, Al-Ga master alloy, pure Te, pure Hf, Al-Eu master alloy, Al-Ho master alloy;
(2) melting: adopt gas atmosphere molten alloy in resistance furnace, smelting temperature is 830～850 DEG C, first in smelting furnace, add pure Mg ingot, after pure magnesium ingot melts completely, add successively Mg-Al master alloy, pure Al ingot, pure Mn, Al-Zr master alloy, Al-Ta master alloy, until completely melted, add successively again Al-Bi master alloy, pure Sn, Mg-Re master alloy, pure Th, Al-Ga master alloy, pure Te, pure Hf, Al-Eu master alloy, Al-Ho master alloy, after melting completely, all raw materials stir, leave standstill 15-30 minute,
(3) refining: smelting furnace is cleaned up and is preheated to 900～930 DEG C and put into again magnesium alloy and carry out refining, add while stirring heat resistance magnesium alloy refining agent, refining time is 20～30 minutes, after refining is complete, leave standstill 30～45 minutes, the consisting of of described heat resistance magnesium alloy refining agent 820～860 DEG C of insulations: BaCl2:15～30%; CaF2:16～18%; MgCl2:4～6%; Surplus is KCl;
(4) steps of manufacturing blanks: it is in the swage tool of 390～405 DEG C that magnesium alloy refining liquid is cast to preheating temperature, pouring temperature is 790～410 DEG C, producing specification is Ф 0.5m, length is the foundry goods of 2.5m, foundry goods is placed on and within the scope of 490～510 DEG C, carries out solution treatment in 20～26 hours, then carry out shrend, the foundry goods after quenching is put in the resistance furnace of 220 DEG C to artificial aging 50 hours, make magnesium alloy blank;
(5) deformation process: a. high temperature forging cogging: heating blank to temperature is 500～520 DEG C of insulation 7～9h; Carry out two to hammer cogging, be forged into the slab that thickness is 7cm; Reduction in pass is 13%, and every 2 passages are forged after annealing 3.5h, and annealing temperature is 500～520 DEG C; B. heated roll to temperature is 380～400 DEG C; C. heating slab to temperature is 550～570 DEG C, is incubated after 20～30 minutes, adopts the method for multi-pass small deformation amount that heavy plate rolling is become to 4cm thin plate, and the speed of rolls is 0.9m/s; Every time rolling draught is 16～21%, after every time rolling, melts down annealing, and annealing temperature is 500～520 DEG C, and annealing time is 1～2h;
(6) ageing treatment: the thin plate after rolling is carried out to artificial aging 37～39h, and aging temp is 330～340 DEG C, then at 310～315 DEG C, carry out ageing treatment for the second time, aging time is 37～39h.
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| CN105624500A (en) * | 2016-01-13 | 2016-06-01 | 济南大学 | Te-enhanced Mg-Al-Zn magnesium alloy |
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| CN109182810A (en) * | 2018-11-19 | 2019-01-11 | 河北工业大学 | A kind of low cost high-temperature-room type plasticity wrought magnesium alloy and preparation method thereof |
| CN109338187A (en) * | 2018-11-19 | 2019-02-15 | 河北工业大学 | A low-cost, high-strength and tough wrought magnesium alloy that can be extruded at high speed and its preparation method |
| CN112481536A (en) * | 2020-11-04 | 2021-03-12 | 长沙新材料产业研究院有限公司 | Magnesium alloy thick plate and preparation method thereof |
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| CN112481536A (en) * | 2020-11-04 | 2021-03-12 | 长沙新材料产业研究院有限公司 | Magnesium alloy thick plate and preparation method thereof |
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