CN1904106A - Fine crystal deformation magnesium alloy containing rare earth Y - Google Patents
Fine crystal deformation magnesium alloy containing rare earth Y Download PDFInfo
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- CN1904106A CN1904106A CN 200610109372 CN200610109372A CN1904106A CN 1904106 A CN1904106 A CN 1904106A CN 200610109372 CN200610109372 CN 200610109372 CN 200610109372 A CN200610109372 A CN 200610109372A CN 1904106 A CN1904106 A CN 1904106A
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- magnesium alloy
- rare earth
- alloy
- magnesium
- fine crystal
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- 239000013078 crystal Substances 0.000 title claims abstract description 22
- 229910000861 Mg alloy Inorganic materials 0.000 title claims description 41
- 229910052761 rare earth metal Inorganic materials 0.000 title abstract description 11
- 150000002910 rare earth metals Chemical class 0.000 title abstract description 8
- 239000011777 magnesium Substances 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 5
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 5
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 27
- 229910052749 magnesium Inorganic materials 0.000 abstract description 9
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 8
- 238000000137 annealing Methods 0.000 abstract description 2
- 229910001092 metal group alloy Inorganic materials 0.000 abstract description 2
- 239000013081 microcrystal Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 20
- 238000000034 method Methods 0.000 description 13
- 239000007788 liquid Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000007670 refining Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 229910018137 Al-Zn Inorganic materials 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- -1 Aluminium Zinc Manganese Yttrium Magnesium Chemical compound 0.000 description 1
- 229910018573 Al—Zn Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910001051 Magnalium Inorganic materials 0.000 description 1
- 229910003023 Mg-Al Inorganic materials 0.000 description 1
- 229910019400 Mg—Li Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- PGTXKIZLOWULDJ-UHFFFAOYSA-N [Mg].[Zn] Chemical compound [Mg].[Zn] PGTXKIZLOWULDJ-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Abstract
A type of micro crystal magnesium contains rare earth Y, which sued as metal alloy materials for structure. Accounting to weight it contains Al:2.65%-3.25%,Zn:1.11%-1.15%,Mn:0.31%-0.38%,Y:0.27%- 2.16%, the rest is MG and some inevitable impurity. After uniformization annealing, the crystal is tiny equiaxed crystal, and average grain size is below 50 mum.
Description
Technical field
A kind of fine crystal deformation magnesium alloy that contains Rare Earth Y relates to a kind of structure metal alloy compositions.
Background technology
Magnesium is that all structures are minimum with density in metal and the alloy material.Compare with other structural metallic materialss, magnesium and magnesium alloy have high specific strength, specific rigidity, vibration damping, electromagnetic shielding and capability of resistance to radiation are strong, easy machining, series of advantages such as easy recovery, having extremely important using value and wide application prospect at automobile, electronics, electrical equipment, space flight, aviation and national defense and military industrial circle, is the 3rd metalloid structured material that grows up after iron and steel and aluminium alloy.
But because magnesium is the close-packed hexagonal crystalline structure, the room temperature slip system is few, plasticity is relatively poor at normal temperatures to make magnesium alloy, the deformation processing difficulty, thereby magnesium alloy is mostly with forging type production, but the magnesium-alloy material after the casting is organized thick, defective is more, intensity is lower, does not reach the requirement of actual use, has limited being extensive use of of magnesium alloy.And can various plate, rod, pipe, section bar and the forging products of production size by mode of texturing, and can be by the control of material structure and the application of thermal treatment process, acquisition is than casting magnesium alloy material better properties, satisfy the needs of more structural parts, thereby deformed magnesium alloy material has more development prospect and potentiality.
Attach great importance to the research and development of wrought magnesium alloys both at home and abroad, deformed magnesium alloy material has begun to the seriation development, and alloy system is shown Mg-Al, Mg-Zn, Mg-Mn, Mg-Li, Mg-Al-Zn, Mg-Zn-Zr, Mg-Mn-Ce, Mg-RE-Zr etc.The magnalium Zn based alloy is to use in the industrial production the earliest, and using also is wrought magnesium alloys widely, can be processed into plate, rod, section bar and forging.Belong to this alloy that is alloys such as AZ31, AZ61, AZ80, AZ91 are arranged.Magnesium zinc zirconium alloy is a high-strength wrought magnesium alloys, and typical alloy designations is ZK60, ZK61 etc.The development and application of magnesium alloy is far away from aluminium alloy, and its basic reason is the plastic working ability of magnesium alloy, and the processing characteristics that therefore improves magnesium alloy materials is to promote its key in application.
Grain refining is to improve the wrought magnesium alloys over-all properties, improves one of main path of Mg alloy formed property.In addition, grain refining can reduce the machinability of micro-shrinkage porosite, hot cracking tendency, raising erosion resistance and product, and evenly tiny equiax crystal also is to realize the superplastic key of magnesium alloy.Process for refining commonly used at present is technologies such as Equal Channel Angular Pressing, big ratio extrusion, rapid solidification powder metallurgy, and is higher to equipment requirements though thinning effect is remarkable, is difficult to realize scale operation.
Making grain refining and add an amount of alterant or a spot of alloying element before adopting the rotten treatment process of liquid process promptly to pour into a mould in magnesium alloy fused mass, is a kind of effective crystal grain thinning means, can improve and improve the processing characteristics of alloy.Traditional modification process mainly contains overheated method, C
2Cl
6Method and carbonaceous breed method.Overheated breed method because the temperature height (1148～1198K), magnesium liquid oxidation, air-breathing serious, the iron amount sharply increases in the magnesium liquid, significantly reduces the shortcoming such as corrosion stability of magnesium alloy and lacks suitability.C
2Cl
6Method is to add C in melting
2Cl
6, can reach the double effects of degasification and crystal grain thinning simultaneously.But because the Cl that produces in the production process
2Seriously corroded, contaminate environment is seldom in industrial application.It is the technology that generally adopts at present that carbonaceous breeds method, as MgCO
3Be one of modifying-refining agent commonly used in producing, in alloy melt, produce tiny in a large number and infusible Al
4C
3Particle is suspended state and serves as the forming core substrate and crystal grain thinning in process of setting.But MgCO
3At high temperature decomposing generation MgO is mingled with and CO
2Greenhouse gases easily pollute magnesium alloy fused mass and environment, and thinning effect is general, have problems such as rotten decline.Rare earth element is a kind of effective alterant, can play and purify liquid magnesium alloy, rotten tissue, improve effects such as mechanics and creep property.The researcher of lot of domestic and foreign to rare earth the effect in magnesium alloy carried out a large amount of research, at present, developed the magnesium-rare earth of multiple series, as EK system, ZE system, EZ system, QE system etc.
Summary of the invention
The objective of the invention is deficiency at above-mentioned prior art existence, provide a kind of employing rare earth element to the wrought magnesium alloys processing of going bad, to reach crystal grain thinning, improve alloy structure, improve the intensity of wrought magnesium alloys and the purpose of plasticity, be beneficial to the fine crystal deformation magnesium alloy that contains Rare Earth Y that post-production is shaped.
To achieve these goals, the present invention realizes by the following technical solutions.
A kind of fine crystal deformation magnesium alloy that contains Rare Earth Y, the weight percent that it is characterized in that its magnesium alloy consists of Al:2.65%～3.25%, Zn:1.11%～1.15%, Mn:0.31%～0.38%, Y:0.27%～2.16%, and surplus is Mg and unavoidable impurities.
A kind of fine crystal deformation magnesium alloy that contains Rare Earth Y of the present invention, the total amount that it is characterized in that its impurity F e, Si in forming, Ni, Ca is less than 0.1%.
The present invention adopts traditional magnesium alloy smelting process to obtain above-mentioned fine crystal deformation magnesium alloy, and ingot casting crystal grain behind homogenizing annealing is tiny equiax crystal, and average grain size is about 50 μ m.After mechanical property detected, tensile strength of alloys of the present invention and unit elongation more not modified alloy all increased, and are beneficial to shaping of later stage.
Because the segregation and the adsorption of rare earth alterative, in process of setting, segregation reduces the balance liquidus temperature of solid/liquid interfaces forward position liquid, the constitutional supercooling degree reduces at the interface, reduce interfacial energy, cause that the crystalline growth is suppressed on the interface, promote to give birth to nuclear, hinder crystal growth, significantly crystal grain thinning.Tiny equiaxial alloy grain tissue has on a lot performances and technologic advantage: 1. can improve mechanical property (as intensity, plasticity, toughness etc.); 2. can improve the formability of later stage operation; 3. in the courses of processing such as rolling and extruding, reduce the surface imperfection of alloy; 4. because grain refining can reduce the branch development of crystal grain, dwindled effective Tc at interval, so reduced hot tearing and shrinkage porosite trend etc.
The invention will be further elaborated below by embodiment, but the present invention is not limited in these examples.
Description of drawings
Fig. 1 is the microstructure that does not add the starting ingot of rare earth.
Fig. 2 is the microstructure of the ingot casting after adopting rare earth of the present invention rotten.
Fig. 3 is the stretching fracture sem photograph of sample of the present invention, (a) is the stretching fracture that does not add the sample of rare earth, (b) is the stretching fracture of the sample after adopting rare earth rotten.
Embodiment
A kind of fine crystal deformation magnesium alloy that contains Rare Earth Y, the weight percent of its magnesium alloy consist of Al:2.65%～3.25%, Zn:1.11%～1.15%, Mn:0.31%～0.38%, Y:0.27%～2.16%, and surplus is Mg and unavoidable impurities.Impurity F e, Si during it is formed, the total amount of Ni, Ca are less than 0.1%.
Embodiment
Electrical crucible is adopted in melting.Because magnesium is active high, when in air, heating, easy oxidization burning loss, under molten state, during no flux protection, then burning that can be fierce.Therefore under flux protection, carry out the melting of alloy.At first magnesium ingot and the end flux with 99.92% (weight percent) adds, after the fusing, add load weighted AlMn master alloy and Zn ingot successively, be warming up to 740～760 ℃, add MgY master alloy alterant, be pressed under the melt 2/3 liquid level place with bell jar and stir, add refining flux up to fusing, left standstill 10 minutes, temperature is poured into when reducing to 700^-710 ℃ in preheating (temperature～300 ℃) swage.
Used starting material are: 99.7%Al, 99.92%Mg, 10.27%AlMn master alloy, 21.38%MgY master alloy (annotate: except that specified otherwise, used alloy ingredient is mass percent Wt.% among the present invention).The composition of the magnesium alloy that obtains sees Table 1, and the mechanical property detected result sees Table 2.
The weight percent of the magnesium alloy of table 1 preparation is formed
| Alloy number | Aluminium | Zinc | Manganese | Yttrium | Magnesium |
| 1 2 3 | 2.65 2.72 3.20 | 1.11 1.15 1.13 | 0.33 0.31 0.35 | 0.27 0.66 1.43 | Surplus surplus surplus |
| 4 | 3.25 | 1.15 | 0.38 | 2.16 | Surplus |
The performance of the magnesium alloy of table 2 preparation
| Alloy number | Tensile strength (MPa) | Yield strength (MPa) | Unit elongation (%) |
| 1 | 157 | 97 | 5.9 |
| 2 | 169 | 83 | 7.5 |
| 3 | 177 | 67 | 9.7 |
| 4 | 197 | 91 | 11.0 |
Claims (2)
1 one kinds of fine crystal deformation magnesium alloys that contain Rare Earth Y, the weight percent that it is characterized in that its magnesium alloy consists of Al:2.65%～3.25%, Zn:1.11%～1.15%, Mn:0.31%～0.38%, Y:0.27%～2.16%, and surplus is Mg and unavoidable impurities.
2. a kind of fine crystal deformation magnesium alloy that contains Rare Earth Y according to claim 1, the total amount that it is characterized in that its impurity F e, Si in forming, Ni, Ca is less than 0.1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610109372 CN1904106A (en) | 2006-08-14 | 2006-08-14 | Fine crystal deformation magnesium alloy containing rare earth Y |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610109372 CN1904106A (en) | 2006-08-14 | 2006-08-14 | Fine crystal deformation magnesium alloy containing rare earth Y |
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| Publication Number | Publication Date |
|---|---|
| CN1904106A true CN1904106A (en) | 2007-01-31 |
Family
ID=37673470
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610109372 Pending CN1904106A (en) | 2006-08-14 | 2006-08-14 | Fine crystal deformation magnesium alloy containing rare earth Y |
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| Country | Link |
|---|---|
| CN (1) | CN1904106A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330006A (en) * | 2010-07-13 | 2012-01-25 | 比亚迪股份有限公司 | Wrought magnesium alloy and preparation method thereof |
| CN102978492A (en) * | 2012-11-30 | 2013-03-20 | 东北大学 | Rare-earth and Zr reinforced Mg-Li based wrought magnesium alloy and preparation method thereof |
| CN108385006A (en) * | 2018-03-19 | 2018-08-10 | 山西瑞格金属新材料有限公司 | High-strength anti-flaming diecast magnesium alloy and preparation method thereof |
| CN109136699A (en) * | 2017-06-15 | 2019-01-04 | 比亚迪股份有限公司 | High thermal conductivity magnesium alloy, inverter case, inverter and automobile |
| WO2020199470A1 (en) * | 2019-04-04 | 2020-10-08 | 东北大学 | Low-rare-earth and high-corrosion-resistance magnesium alloy, and preparation method therefor |
-
2006
- 2006-08-14 CN CN 200610109372 patent/CN1904106A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330006A (en) * | 2010-07-13 | 2012-01-25 | 比亚迪股份有限公司 | Wrought magnesium alloy and preparation method thereof |
| CN102330006B (en) * | 2010-07-13 | 2013-10-02 | 比亚迪股份有限公司 | Wrought magnesium alloy and preparation method thereof |
| CN102978492A (en) * | 2012-11-30 | 2013-03-20 | 东北大学 | Rare-earth and Zr reinforced Mg-Li based wrought magnesium alloy and preparation method thereof |
| CN109136699A (en) * | 2017-06-15 | 2019-01-04 | 比亚迪股份有限公司 | High thermal conductivity magnesium alloy, inverter case, inverter and automobile |
| CN109136699B (en) * | 2017-06-15 | 2021-07-09 | 比亚迪股份有限公司 | High-heat-conductivity magnesium alloy, inverter shell, inverter and automobile |
| CN108385006A (en) * | 2018-03-19 | 2018-08-10 | 山西瑞格金属新材料有限公司 | High-strength anti-flaming diecast magnesium alloy and preparation method thereof |
| WO2020199470A1 (en) * | 2019-04-04 | 2020-10-08 | 东北大学 | Low-rare-earth and high-corrosion-resistance magnesium alloy, and preparation method therefor |
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