CN109807494A - A composite powder for surfacing of AZ91D magnesium-based materials - Google Patents
A composite powder for surfacing of AZ91D magnesium-based materials Download PDFInfo
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- CN109807494A CN109807494A CN201811512276.2A CN201811512276A CN109807494A CN 109807494 A CN109807494 A CN 109807494A CN 201811512276 A CN201811512276 A CN 201811512276A CN 109807494 A CN109807494 A CN 109807494A
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- composite powder
- surfacing
- powder
- az91d magnesium
- based materials
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- 239000000843 powder Substances 0.000 title claims abstract description 63
- 239000002131 composite material Substances 0.000 title claims abstract description 51
- 239000000463 material Substances 0.000 title claims abstract description 33
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 30
- 239000011777 magnesium Substances 0.000 title claims abstract description 30
- 238000003466 welding Methods 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 abstract description 15
- 239000000956 alloy Substances 0.000 abstract description 15
- 229910052727 yttrium Inorganic materials 0.000 abstract description 5
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052693 Europium Inorganic materials 0.000 abstract description 4
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 abstract description 4
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000003628 erosive effect Effects 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 229910000765 intermetallic Inorganic materials 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 238000005253 cladding Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- RSEIMSPAXMNYFJ-UHFFFAOYSA-N europium(III) oxide Inorganic materials O=[Eu]O[Eu]=O RSEIMSPAXMNYFJ-UHFFFAOYSA-N 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005552 hardfacing Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 229910033181 TiB2 Inorganic materials 0.000 description 2
- 238000005255 carburizing Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
本发明公开了一种对镁基材料表面进行堆焊加工处理的一种复合粉末，具体针对AZ91D镁基材料表面堆焊处理而提高其耐磨性能的复合粉末，其特点是在保障完成等离子表面堆焊工艺的前提下，显著提高了AZ91D镁基材料的耐磨损、耐腐蚀、耐高温冲刷性能。这种合金粉末材料的特点是在传统合金粉末中加入稀土元素铕(Eu)或钇(Y)促使形成新型纳米层状金属间化合物，使得等离子堆焊之后复合材料表面耐磨损性能提高35％左右，同时堆焊层平滑均匀并且不出现气孔和裂纹，大幅延长了AZ91D镁基复合材料零部件磨损周期和使用寿命。
The invention discloses a composite powder for surfacing processing on the surface of a magnesium-based material, in particular a composite powder for improving the wear resistance of the AZ91D magnesium-based material by surfacing the surface. Under the premise of surfacing welding process, the wear resistance, corrosion resistance and high temperature erosion resistance of AZ91D magnesium-based material are significantly improved. The feature of this alloy powder material is that the rare earth element europium (Eu) or yttrium (Y) is added to the traditional alloy powder to promote the formation of a new nano-layered intermetallic compound, which improves the wear resistance of the composite surface by 35% after plasma surfacing. At the same time, the surfacing layer is smooth and uniform without pores and cracks, which greatly prolongs the wear cycle and service life of AZ91D magnesium matrix composite parts.
Description
Technical field
The present invention relates to a kind of composite powders that metal surface carries out built-up welding working process, and in particular to AZ91D magnesium substrates
Expect the alloy composite powder of surface plasma built-up welding.
Background technique
AZ91 mg-based material is since small with density, thermal expansion coefficient is low, specific stiffness and specific strength height etc. are many excellent
Performance all achieves successful application in terms of optical precision instrument, body of a motor car and engine, aerospace vehicle.
However AZ91 magnesium-based composite material itself also suffers from certain drawbacks and deficiency, AZ91 magnesium alloy substrate hardness is lower, friction is
Number is high, is easy to pull and be difficult to lubricate that it is caused to wear no resistance.Make a general survey of metal material field, the consumption of metal material, failure
One of the main reasons is exactly to wear.It counts according to related data, is directly or indirectly lost by the economic loss caused by wearing every year
Hundreds billion of members are reached.Therefore the wear-resisting property for improving AZ91 magnesium-based composite material component is to expand AZ91 magnesium-based composite material
One vital task of components application field and bottleneck problem urgently to be resolved.
In order to improve the wear resistance of metal material, numerous scientific research personnel have done a large amount of work, and retrieval is close
Year surface working process technology mainly has with material: (1) Nanjing Aero-Space University's Materials Academy in 2016 publishes thesis " carburizing
Influence of the temperature to Ti2AlNb alloy friction and wear behavior ", different carburizing temperatures are studied to Ti2AlNb alloy microstructure, aobvious
The influence of microhardness and friction and wear behavior.(2) 2012 years Nanchang University of aviation publish thesis, and " three-dimensional nickel screen enhances aluminum-base composite
Material friction wear properties research ", research shows that the wearability of three-dimensional nickel screen reinforced aluminum matrix composites is better than matrix alloy, and
Increase with load, revolving speed increases, wearing- in period extension and the increase of network pore degree, wearability raising are more obvious.(3)2016
Field operation engineering college, year liberation army Polytechnics publish thesis " laser melting coating TiB2 particle enhanced nickel base Alloy Composite Coating it is micro-
See tissue and tribological Properties ", TiB2 particle enhanced nickel base Alloy Composite Coating is had studied in dry friction and Seawater
In friction and wear behavior and mechanism.(4) 2013 years Shandong University's patents, Publication No.: CN101566271B, a kind of metal pottery
Porcelain composite abrasion resistance material and preparation method thereof.It is asked although the above technology and dusty material temporarily solve some material wear-resistants
Topic, but it still has significant limitation, in particular for solving the problems, such as that improving AZ91 magnesium-based composite material wearability is still not suitable for,
Such as using conventional alloys dusty material to AZ91 magnesium-based composite material carry out surface working process, can generate coating easily peels off with
Coating and matrix junction crack or the defects of stomatas, seriously affect the wear-resisting property of component entirety.
To solve this problem, abandoning tradition alloy powder composition proportion of the present invention, and conjunctive use adds two rare earth members
Element: europium (Eu) or yttrium (Y) form the toughness rare-earth phase of a large amount of novel nano stratiform europiums and yttrium in overlay cladding, while promoting heap
Layer tissue crystal grain refinement, nodularization and Dispersed precipitate occur for part Zr3AlC2 ceramic enhancement phase, firmly crisp so as to improve overlay cladding
Property, greatly improve the anti-cold crack performance of AZ91 magnesium-based composite material component.Furthermore.The present invention, which advanced optimizes, improves plasma heap
The component proportion for welding powder metallurgy, realizes the plasma surfacing technique of AZ91 magnesium-based composite material surface high abrasion anti-cracking.
Summary of the invention
Goal of the invention: to overcome the shortcomings of the above technology, the present invention proposes higher a kind of hardness, high temperature resistant, corrosion-resistant, resistance to
It washes away wear-resisting with superior function, is suitble to the dedicated acid bronze alloy of AZ91 magnesium-based composite material surface plasma built-up welding compound
Powder.
The technical solution that the present invention provides first is that: a kind of composite powder for AZ91D mg-based material surface overlaying, institute
State the component that composite powder includes following mass percent: 1.0%≤B≤2.0%；Y:0.1%~0.5%；Al:6.0%~
8.2%；Zr:2.1%~3.2%；C:1.2%~1.8%；Zn:0.6%~1.5%；Mn:0.9%~1.5%；Si:1.6%
~2.6%；Fe:1%；Cu: surplus.Wherein, it is 50~210 mesh, heap after Plasma Welding that composite powder, which uses granularity, when built-up welding
The hardness 30~40 of layer.
The technical solution that the present invention provides second is that: a kind of composite powder for AZ91D mg-based material surface overlaying,
The composite powder includes the component of following mass percent: 0.1% < B < 1.0%；Eu2O3: 0.2%~0.8%；Al:6.2%
~8.9%；Zr:2.1%~3.2%；C:1.2%~1.8%；Zn:0.6%~1.5%；Mn:0.9%~1.5%；Si:
1.6%~2.6%；Fe:0.5%；Cu: surplus.Wherein, composite powder uses granularity: 70~230 mesh when built-up welding；Plasma welding
Connect the hardness 35~45 of rear overlay cladding.
The technical solution that the present invention provides third is that: a kind of composite powder for AZ91D mg-based material surface overlaying, institute
State the component that composite powder includes following mass percent: 2.0%≤B < 2.5%；Eu2O3: 0.2%~0.8%；Y:0.1~
0.5；Al:5.2%~6.9%；Zr:2.1%~3.2%；C:1.2%~1.8%；Zn:0.6%~1.5%；Mn:0.9%~
1.5%；Si:1.6%~2.6%；Fe:0.5%~1%；Cu: surplus.Wherein, when built-up welding composite powder use granularity: 80~
260 mesh, hardness HRC40~45 of overlay cladding after Plasma Welding.
The preparation method of above-mentioned powder is very simple, directly that raw material powder is uniform according to above-mentioned powdered ingredients proportion requirement
Mixing sieving.
Bead-welding technology parameter are as follows: welding gun height: 9-11mm；Minor arc electric current: 100-110A；Back ground current: 25-30A；
Turntable revolving speed: 0.10-0.12 (control box show value)；Powder feeding motor: 48V (zero load) 32V (load)；Ion-gas flow: 0.3-
0.35m3/h；Protection air-flow amount: 0.2-0.4m3/h；Powder feeding throughput: 0.26-0.35m3/h；Amplitude of fluctuation: 4.5mm；Swing frequency
Rate: 4Hz；Swing the residence time a: the left side=right side=1.4-1.8s.
Compared with prior art, the invention has the characteristics that rare earth elements europium (Eu) and yttrium are added in conventional alloys powder
(Y), by adjusting the component ratio of alloy powder, high anti-cracking, high abrasion, corrosion-resistant and high-temperature erosion-resistant alloyed powder are obtained
End, the dusty material are more suitable for the plasma surfacing on AZ91D mg-based material surface, and postwelding overlay surface is smooth and uniform, heap
Layer hardness HRC reaches 36-42, and high quality completes bead-welding technology quality requirement, realizes and requires as shown in Figure 1: through x-ray inspection,
Stomata and cracking breakout are far smaller than conventional powder, and high quality is fully achieved and promotes AZ91D mg-based material surface abrasion resistance, has
Effect extends wear-out period and the service life of AZ91D mg-based material component, is a kind of wide new plasma heap of commercial promise
Weld composite powder material.
Detailed description of the invention
Fig. 1 novel powder and conventional powder plasma surfacing AZ91D magnesium-based plate comparison diagram piece: it (a) is prepared for embodiment 1
Novel powder result；It (b) is conventional powder result (without europium and yttrium).
Specific embodiment
Embodiment 1
The test of plasma surfacing processing technology, alloy powder material each group are carried out to SiC/AZ91 magnesium-based composite material surface
Sub-prime amount fractions are as follows: B:2.0%；Y:0.1%；Al:6.0%；Zr:2.1%%；C:1.2%；Zn:0.6%；Mn:
0.9%；Si:1.6%；Fe:1%；Cu: surplus；Built-up welding powder uses granularity: 50 mesh.
Its technological parameter are as follows: welding gun height: 9mm；Minor arc electric current: 100A；Back ground current: 25A；Turntable revolving speed: 0.10 (control
Box show value processed)；Powder feeding motor: 48V (zero load) 32V (load)；Ion-gas flow: 0.30m3/h；Protection air-flow amount: 0.2m3/
h；Powder feeding throughput: 0.26m3/h；Amplitude of fluctuation: 4.5mm；Hunting frequency: 4Hz；Swing the residence time a: the left side=right side=1.4s.
Test result: as shown in Fig. 1 (a), AZ91 magnesium-based composite material hardfacing weld deposit thickness is about 3.2mm, appearance compared with
It gets well, always body formed to meet the requirements, overlay cladding measured hardness HRC:38.25, x-ray inspection after turnery processing does not occur stomata, splits
Line；This welding conditions meets surfacing requirement, and actual welding can refer to, and effect is significantly better than conventional powder plasma surfacing effect
(shown in such as Fig. 1 (b)).
Embodiment 2
The test of plasma surfacing processing technology is carried out to Si3N4/AZ91 magnesium-based composite material surface, alloy powder material is each
Constituent mass fractions are as follows: B:1.0%；Eu2O3: 0.8%；Al:8.9%；Zr:3.2%；C:1.8%；Zn:1.5%；
Mn:1.5%；Si:2.6%；Fe:0.5%；Cu: surplus；Built-up welding powder uses granularity: 230 mesh.
Its technological parameter are as follows: welding gun height: 10mm；Minor arc electric current: 105A；Back ground current: 28A；Turntable revolving speed: 0.11
(control box show value)；Powder feeding motor: 48V (zero load) 32V (load)；Ion-gas flow: 0.35m3/h；Protection air-flow amount:
0.3m3/h；Powder feeding throughput: 0.30m3/h；Amplitude of fluctuation: 4.5mm；Hunting frequency: 4Hz；Swing the residence time: left=right=
1.6s。
Test result: SiC/AZ91 magnesium-based composite material hardfacing weld deposit thickness is about 3.3mm, and appearance is preferable, it is overall at
Type meets the requirements, overlay cladding measured hardness HRC:39.89, and x-ray inspection after turnery processing does not occur stomata, crackle；This welding
Specification meets surfacing requirement, and actual welding can refer to.
Embodiment 3
The test of plasma surfacing processing technology, alloy powder material each group are carried out to AlN/AZ91 magnesium-based composite material surface
Sub-prime amount fractions are as follows: B:2.5%；Eu2O3:0.2%；Y:0.5；Al:6.9%；Zr:3.2%；C:1.2%；Zn:
0.6%；Mn:0.9%；Si:1.6%；Fe:1%；Cu: surplus；Built-up welding powder uses granularity: 260 mesh.
Its technological parameter are as follows: welding gun height: 11mm；Minor arc electric current: 110A；Back ground current: 30A；Turntable revolving speed: 0.12
(control box show value)；Powder feeding motor: 48V (zero load) 32V (load)；Ion-gas flow: 0.35m3/h；Protection air-flow amount:
0.4m3/h；Powder feeding throughput: 0.35m3/h；Amplitude of fluctuation: 4.5mm；Hunting frequency: 4Hz；Swing the residence time: left=right=
1.8s。
Test result: AlN/AZ91 magnesium-based composite material hardfacing weld deposit thickness is about 3.4mm, and appearance is preferable, it is overall at
Type meets the requirements, overlay cladding measured hardness HRC:42.88, and x-ray inspection after turnery processing does not occur stomata, crackle；This welding
Specification meets surfacing requirement, and actual welding can refer to.
Claims (8)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112958635A (en) * | 2021-03-29 | 2021-06-15 | 浙江一铭机车部件有限公司 | Production process of engine connecting rod bushing and early wear analysis and evaluation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08174272A (en) * | 1994-12-21 | 1996-07-09 | Mitsui Mining & Smelting Co Ltd | Copper base alloy powder for head facing |
| CN1143685A (en) * | 1995-02-17 | 1997-02-26 | 丰田自动车株式会社 | Wear-resistant copper-based alloy |
| CN1930315A (en) * | 2004-03-15 | 2007-03-14 | 丰田自动车株式会社 | Build-up wear-resistant copper-based alloy |
| CN103659050A (en) * | 2013-12-18 | 2014-03-26 | 江苏科技大学 | Crack-resistant and highly abrasion-resistant powder material for plasma spray welding of three-eccentric center butterfly valve |
-
2018
- 2018-12-11 CN CN201811512276.2A patent/CN109807494B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08174272A (en) * | 1994-12-21 | 1996-07-09 | Mitsui Mining & Smelting Co Ltd | Copper base alloy powder for head facing |
| CN1143685A (en) * | 1995-02-17 | 1997-02-26 | 丰田自动车株式会社 | Wear-resistant copper-based alloy |
| CN1930315A (en) * | 2004-03-15 | 2007-03-14 | 丰田自动车株式会社 | Build-up wear-resistant copper-based alloy |
| CN103659050A (en) * | 2013-12-18 | 2014-03-26 | 江苏科技大学 | Crack-resistant and highly abrasion-resistant powder material for plasma spray welding of three-eccentric center butterfly valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112958635A (en) * | 2021-03-29 | 2021-06-15 | 浙江一铭机车部件有限公司 | Production process of engine connecting rod bushing and early wear analysis and evaluation method thereof |
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Application publication date: 20190528 Assignee: Center for technology transfer Jiangsu University of Science and Technology Assignor: JIANGSU University OF SCIENCE AND TECHNOLOGY Contract record no.: X2021980006173 Denomination of invention: A composite powder for surface surfacing of AZ91D magnesium matrix material Granted publication date: 20210105 License type: Common License Record date: 20210714 |
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