CN102618764A - Magnesium alloy with hot cracking resistance and low linear shrinkage - Google Patents

Magnesium alloy with hot cracking resistance and low linear shrinkage Download PDF

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Publication number
CN102618764A
CN102618764A CN2012101077798A CN201210107779A CN102618764A CN 102618764 A CN102618764 A CN 102618764A CN 2012101077798 A CN2012101077798 A CN 2012101077798A CN 201210107779 A CN201210107779 A CN 201210107779A CN 102618764 A CN102618764 A CN 102618764A
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magnesiumalloy
magnesium alloy
alloy
weight percent
percents
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冯俊
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Jianghan University
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Jianghan University
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Abstract

The invention discloses a magnesium alloy with hot cracking resistance and low linear shrinkage, and belongs to the magnesium alloy field. The magnesium alloy is composed of elements of Mg, Al, Zn, Mn, rare earths, Nb and Li, and comprises, by weight, 1.5 to 25 percents of Al, 0.1 to 3.5 percents of Zn, 0.1 to 2.2 percents of Mn, 0.0002 to 16 percents of rare earths, 0.0002 to 4 percents of Nb, 0.0002 to 9 percents of Li, and the balance Mg. According to the magnesium alloy, the structure of Beta phase is changed by adding rare earth elements and the Nb element into the magnesium alloy; grains are refined by adding the Li element; and crystallization latent heat is changed when the magnesium alloy is solidified by the combined action of the elements, so that the heat resistant magnesium alloy which has good mold-filling capacities, low shrinkage rate, good mechanical properties, machinability, mobility and die-casting properties and is suitable for casting is obtained.

Description

Low linear shrinkage ratio magnesiumalloy is split in a kind of heat resistanceheat resistant
Technical field
The present invention relates to a kind of magnesiumalloy, particularly a kind of MgAlZn low-shrinkage magnesiumalloy.
Background technology
Along with development of science and technology, be that the vehicles of representative need come the further higher product innovation of research and development fuel availability through alleviating the weight of vehicle body with the automobile.In automobile industry, magnesiumalloy is used for substituting traditional cast iron as a kind of novel lightweight metal material by automaker, to realize alleviating the purpose of tare.
At present, homemade MgAlZn is that the diecast magnesium alloy trade mark has YM302, YM303, YM304, YM305; The MgAlZn of USS ASTM B is that the diecast magnesium alloy trade mark has AZ91A, AZ91B, AZ91D; The MgAlZn of Nippon Standard JIS H is that the diecast magnesium alloy trade mark has MDC1B, MDC1D; The MgAlZn of European standard EN is that the diecast magnesium alloy trade mark has EN-MC21110, EN-MC21120, EN-MC21121.The alloy of these trades mark has: the characteristics that flowability, machinability, die casting performance are all very good are widely used in cast forms such as permanent mold casting, precision casting, low-pressure casting, die casting, semi-solid casting, sand mold casting.
In realizing process of the present invention; The contriver finds that there is following problem at least in prior art: magnesiumalloy is when casting, and molten metal receives the influence of volumetric shrinkage in being frozen into the solid process; Internal stress is very big; Cause the cast(ing) surface cracking easily, internal shrinkage, even the phenomenon that the foundry goods die sinking is promptly ruptured takes place.This decrepitation has seriously influenced the application of cast magnesium alloys, has influence on the qualification rate of magnesium alloy member.Above-mentioned diecast magnesium alloy linear shrinkage ratio is 1.5-2%, and obvious decrepitation is arranged, and has limited its use range.
Summary of the invention
In order to solve the problem that exists in the above-mentioned prior art, the embodiment of the invention provides a kind of heat resistanceheat resistant to split low linear shrinkage ratio magnesiumalloy.Said technical scheme is following:
Low linear shrinkage ratio magnesiumalloy is split in a kind of heat resistanceheat resistant; Said magnesiumalloy is made up of Mg, Al, Zn, Mn, rare earth, Nb, Li; Its weight percent consists of Al 1.5-25%, Zn 0.1-3.5%, Mn 0.1-2.2%, rare earth 0.0002-16%, Nb 0.0002-4%, Li 0.0002-9%, and all the other are Mg.
Wherein, said rare earth is at least a among Gd, Y, Sc, Sm, Pr, Yb, Nd, La, Ce, Tb, Dy, Ho and the Er.
Preferably, said rare earth is at least a among Gd or Gd and Y, Sc, Sm, Pr, Yb, Nd, La, Ce, Tb, Dy, Ho and the Er.
Preferably, its weight percent consists of Al 4.5-10%, Zn 0.3-1%, Mn 0.1-0.6%, Gd 0.1-2%, Nb 0.05-1%, Li0.05-4%, and all the other are Mg.
Preferably, its weight percent consists of Al 1.5-2.5%, Zn 0.3-1%, Mn 0.1-0.6%, Gd 0.1-4%, Nb 0.05-1%, Li0.001-4%, and all the other are Mg.
Choosing is more arranged, and its weight percent consists of Al 7-9.7%, Zn 0.35-1%, Mn 0.1-0.6%, Gd 0.1-0.8%, Nb0.05-0.6%, Li 0.05-4%, and all the other are Mg.
Most preferably, its weight percent consists of Al 8%, Zn 0.5%, Mn 0.4%, Gd 0.4%, Nb 0.3%, Li2%, and all the other are Mg.
Wherein, said Nb adds said magnesiumalloy through the form of AlNb master alloy or NbAl master alloy.The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is: in the cast magnesium alloys provided by the invention; RE can form the MgRE compound with Mg; Nb can form some resistant to elevated temperatures metallic compounds with other elements (like Al), and Li has the intensive crystal grain thinning and purifies the effect of alloy liquid.Because the combined action of above-mentioned element; The particularly effect of Li element, crystallization latent heat changes when making alloy graining, under the heat absorption of above-mentioned element, heat release combined action; It is diecast magnesium alloy that the time that alloy liquid provided by the invention keeps liquid in mould obviously is longer than existing AZ; Make alloy in process of setting, feeding is abundant, built-in thermal stress is little, heat crack resistance is good, simultaneously; Because it is very little that magnesium alloy liquid volume that the embodiment of the invention provides and solid-state volume change, therefore have the characteristics that cavity filling ability is good, shrinking percentage is low.Characteristics such as alloy of the present invention also has good mechanical property, and machinability, flowability and die casting property are good.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will do to describe in detail further to embodiment of the present invention below.
The manufacture craft of the magnesiumalloy that the embodiment of the invention provides, heat treating method are explained as follows:
1, the magnesiumalloy that provides of the embodiment of the invention can be made through following three kinds of melting technologies:
Technology one: the magnesiumalloy according to the embodiment of the invention provides is formed and the content alloyage; In resistance furnace, add magnesium ingot, aluminium ingot, zinc ingot metal, MgMn master alloy, AlNb master alloy or NbAl master alloy; Heat up for used resistance furnace, when the above-mentioned metal that adds melts soon, adopt argon shield or magnesium alloy covering agent protection.Add MgRE master alloy (like MgGd, MgY, MgNd etc.) or AlRE master alloy, AlLi master alloy or MgLi master alloy when being warmed up to 720 ℃-780 ℃, and stir, leave standstill insulation 30 minutes, get alloy liquid at 720 ℃-780 ℃.Water a fritter sample with gained alloy liquid, detect its melting quality, as: carry out the gas content inspection according to the gas content inspection method,, need carry out refining treatment if second-rate; If up-to-standard, the temperature adjustment to 700 of said alloy liquid is skimmed by ℃-740 ℃, pour into a mould then, promptly obtain the foundry goods of alloy of the present invention.
Resistance furnace also can use other smelting furnaces to replace in this technology; Magnesium alloy covering agent and master alloy product are the market sale product; The refining treatment method adopts the ordinary method of the industry.
Technology two: the magnesiumalloy according to the embodiment of the invention provides is formed and the content alloyage; In vacuum oven, add aluminium ingot, zinc ingot metal, Mn or Mn agent, AlNb master alloy or NbAl master alloy; Be warming up to 820 ℃; Be incubated 2-8 hour, cool to 720 ℃-780 ℃ then, add magnesium ingot, RE, AlLi master alloy or MgLi master alloy.720 ℃-780 ℃ insulations 30 minutes, get alloy liquid behind the melting of metal of waiting to be added, adopt the protection of argon shield or magnesium alloy covering agent to prevent the alloy liquid oxidation.Water a fritter sample with gained alloy liquid, detect its melting quality, as: the inspection of gas content, if second-rate, need carry out refining treatment; If up-to-standard, the temperature adjustment to 700 of said alloy liquid is skimmed by ℃-740 ℃, pour into a mould then, promptly obtain the foundry goods of alloy of the present invention.
Vacuum oven can substitute with other smelting furnaces such as main frequency furnaces in this technology; Magnesium alloy covering agent, rare earth, Mn agent, master alloy are sell goods on the market; The refining treatment method adopts the ordinary method of the industry.
Technology three: the magnesiumalloy according to the embodiment of the invention provides is formed and the content alloyage; In smelting furnace, adding standard brand MgAlZn is diecast magnesium alloy, AlNb master alloy or NbAl master alloy, adopts argon shield or magnesium alloy covering agent protection when above-mentioned metal melts soon.Add MgRE master alloy (like MgGd, MgY, MgNd etc.) or AlRE master alloy, AlLi master alloy or MgLi master alloy when being warmed up to 720 ℃-780 ℃, and stir, leave standstill insulation 30 minutes, get alloy liquid at 720 ℃-780 ℃.Water a fritter sample with gained alloy liquid, detect its melting quality, as: carry out the gas content inspection according to the gas content inspection method,, need carry out refining treatment if second-rate; If up-to-standard, the temperature adjustment to 700 of said alloy liquid is skimmed by ℃-740 ℃, pour into a mould then, promptly obtain the foundry goods of alloy of the present invention.
Magnesium alloy covering agent and master alloy are sell goods on the market in this technology; The refining treatment method adopts the ordinary method of the industry.
2, the thermal treatment and the treatment process thereof of the magnesiumalloy that provides of the embodiment of the invention:
Die casting in the magnesiumalloy that the embodiment of the invention provides can not heat-treated, and the cast member of other form can be heat-treated, and generally adopts the T4 solution treatment.The T4 solid solution treatment process is: cast member is warming up to 390 ℃ in chamber type electric resistance furnace, argon shield is incubated 18 hours, shrend after cast member is come out of the stove, 60 ℃ of water temperatures.
Receive fusion process to select the influence of some other inevitable factor in purity and the melting of raw material, the castingprocesses for use; The diecast magnesium alloy that the embodiment of the invention provides may contain unavoidable impurities; Like Fe, Cu, Si, Be etc.; As long as said impurity does not cause obvious influence to the performance of magnesiumalloy; And total impurities is controlled at weight percent＜0.5% in the said magnesiumalloy finished product, in weight percent＜0.1% of single impurity in said magnesiumalloy finished product, exists trace impurity also to allow.
Embodiment 1
Prepare magnesiumalloy by above-mentioned technology one said step, foundry goods adopts die cast, and the weight percent of said magnesiumalloy consists of Al 1.5%, Zn 0.1%, Mn 0.1%, Y 0.0002%, Nb 0.0002%, Li 0.0002%, and all the other are Mg.
Foundry goods is heat-treated.
The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
Embodiment 2
Prepare magnesiumalloy by above-mentioned technology two said steps, foundry goods adopts semi-solid casting, and the weight percent of said magnesiumalloy consists of Al 25%, Zn 3.5%, Mn 2.2%, Sc 16%, Nb 4%, Li 9%, and all the other are Mg.
Foundry goods is heat-treated.The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
Embodiment 3
Prepare magnesiumalloy by above-mentioned technology two said steps, foundry goods adopts Hpdc, and the weight percent of magnesiumalloy consists of Al3.5%, Zn 3%, Mn 2%, Sm 5%, Nb 2%, Li 7%, and all the other are Mg;
The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
Embodiment 4
Prepare magnesiumalloy by above-mentioned technology one said step, foundry goods adopts low-pressure casting, and the weight percent of said magnesiumalloy consists of Al 1.5%, Zn 0.3%, Mn 0.1%, Nd 0.1%, Nb 0.05%, Li 0.001%, and all the other are Mg.
Foundry goods is heat-treated.The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
Embodiment 5
Prepare magnesiumalloy by above-mentioned technology two said steps, foundry goods adopts precision casting, and the weight percent of said magnesiumalloy consists of Al 2.5%, Zn 1%, Mn 0.6%, La4%, Nb 1%, Li 4%, and all the other are Mg.
Foundry goods is heat-treated.The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
Embodiment 6
Prepare magnesiumalloy by above-mentioned technology one said step, foundry goods adopts sand mold casting, and the weight percent of said magnesiumalloy consists of Al 4.5%, Zn 0.3%, Mn 0.1%, Ce 0.1%, Nb 0.05%, Li 0.05%, and all the other are Mg.
Foundry goods is heat-treated.The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
Embodiment 7
Prepare magnesiumalloy by above-mentioned technology two said steps, foundry goods adopts Hpdc, and the weight percent of said magnesiumalloy consists of Al 10%, Zn 1%, Mn 0.6%, Tb 2%, Nb 1%, Li 4%, and all the other are Mg.
The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
Embodiment 8
Prepare magnesiumalloy by above-mentioned technology two said steps, foundry goods adopts Hpdc, and the weight percent of said magnesiumalloy consists of Al 7%, Zn 0.35%, Mn 0.12%, Dy 0.1%, Nb 0.05%, Li 0.05%, and all the other are Mg.
The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
Embodiment 9
Prepare magnesiumalloy by above-mentioned technology three said steps; Said standard brand diecast magnesium alloy used in the preparation process is YM305; Foundry goods adopts Hpdc; The weight percent of said magnesiumalloy consists of Al 9.7%, Zn 0.9%, Mn 0.5%, Ho0.8%, Nb 0.6%, Li 4%, and all the other are Mg.
The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
Embodiment 10
Prepare magnesiumalloy by above-mentioned technology two said steps, foundry goods adopts die cast, and the weight percent of said magnesiumalloy consists of Al 7.5%, Zn 0.4%, Mn 0.5%, Gd 0.3%, Nb 0.1%, Li 3%, and all the other are Mg.
Foundry goods is heat-treated.
The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
Embodiment 11
Prepare magnesiumalloy by above-mentioned technology one said step, foundry goods adopts sand mold casting, and the weight percent of said magnesiumalloy consists of Al 7.5%, Zn 0.4%, Mn 0.5%, Gd 0.2%, Er 0.1%, Nb 0.1%, Li 3%, and all the other are Mg.
Foundry goods is heat-treated.
The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
Embodiment 12
Prepare magnesiumalloy by above-mentioned technology two said steps, foundry goods adopts die cast, and the weight percent of said magnesiumalloy consists of Al 7.5%, Zn 0.4%, Mn 0.5%, Er 0.3%, Nb 0.1%, Li 3%, and all the other are Mg.
Foundry goods is heat-treated.
The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
Embodiment 13
Prepare magnesiumalloy by above-mentioned technology two said steps, foundry goods adopts die cast, and the weight percent of said magnesiumalloy consists of Al 9%, Zn 0.9%, Mn 0.2%, Gd 0.4%, Nb 0.3%, Li 1%, and all the other are Mg.
Foundry goods is heat-treated.
The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
Embodiment 14
Prepare magnesiumalloy by above-mentioned technology two said steps, foundry goods adopts die cast, and the weight percent of said magnesiumalloy consists of Al 8.5%, Zn 0.8%, Mn 0.3%, Gd 0.7%, Nb 0.2%, Li 0.5%, and all the other are Mg.
Foundry goods is heat-treated.
The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
Embodiment 15
Prepare magnesiumalloy by above-mentioned technology one said step, foundry goods adopts Hpdc, and said magnesiumalloy weight percent consists of Al8%, Zn 0.5%, Mn 0.4%, Gd 0.5%, Nb 0.3%, Li 2%, and all the other are Mg.
The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
The comparative example 1
Prepare magnesiumalloy by above-mentioned technology one said step, foundry goods adopts Hpdc, and said magnesiumalloy weight percent consists of Al8%, Zn 0.5%, Mn 0.4%, Gd 0.5%, Li 2%, and all the other are Mg.
The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
The comparative example 2
Prepare magnesiumalloy by above-mentioned technology one said step, foundry goods adopts Hpdc, and said magnesiumalloy weight percent consists of Al8%, Zn 0.5%, Mn 0.4%, Gd 0.5%, Nb 0.3%, and all the other are Mg.
The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
The comparative example 3
Prepare magnesiumalloy by above-mentioned technology one said step, foundry goods adopts Hpdc, and said magnesiumalloy weight percent consists of Al8%, Zn 0.5%, Mn 0.4%, Gd 0.5%, and all the other are Mg.
The performance of the Mg alloy castings that present embodiment provides is referring to table 1.
More than the Mg alloy castings that provides of each embodiment can contain the impurity of trace, weight percent＜0.5% of said unavoidable impurities total amount in said magnesiumalloy finished product, weight percent＜0.1% of single impurity in said magnesiumalloy finished product.
The linear shrinkage ratio of the Mg alloy castings that various embodiments of the present invention and comparative example provide is referring to table 1.
The linear shrinkage counting rate meter of the Mg alloy castings that each embodiment of table 1 provides
By shown in the table 1, the linear shrinkage ratio of the magnesium alloying part that the embodiment of the invention provides is diecast magnesium alloy all less than 1% well below existing MgAlZn, has good hot-cracking resistance; Simultaneously referring to embodiment 15 and comparative example 1-3, the Mg alloy castings that the embodiment of the invention provides is compared with not adding Li or Nb or Mg alloy castings that both all do not add, has better hot-cracking resistance; Embodiment 7,8 and 15 linear shrinkage ratio are lower than other embodiment, and the scope of embodiment 7,8 and 15 each component is in Al 7-9.7%, Zn 0.35-1%, Mn 0.1-0.6%, Gd 0.1-0.8%, Nb 0.05-0.6%, Li0.05-4%; Through the contrast between the embodiment 10-12, can know that the RE that contains has the effect of Gd better; The linear shrinkage ratio of the Mg alloy castings that embodiment 15 provides is minimum, and the magnesiumalloy hot-cracking resistance that embodiment 15 provides is the strongest.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (8)

1. low linear shrinkage ratio magnesiumalloy is split in a heat resistanceheat resistant; It is characterized in that; Said magnesiumalloy is made up of Mg, Al, Zn, Mn, rare earth, Nb, Li; Its weight percent consists of Al 1.5-25%, Zn 0.1-3.5%, Mn 0.1-2.2%, rare earth 0.0002-16%, Nb 0.0002-4%, Li 0.0002-9%, and all the other are Mg.
2. magnesiumalloy according to claim 1 is characterized in that, said rare earth is at least a among Gd, Y, Sc, Sm, Pr, Yb, Nd, La, Ce, Tb, Dy, Ho and the Er.
3. magnesiumalloy according to claim 1 and 2 is characterized in that, said rare earth is at least a among Gd or Gd and Y, Sc, Sm, Pr, Yb, Nd, La, Ce, Tb, Dy, Ho and the Er.
4. according to each described magnesiumalloy of claim 1-3, it is characterized in that its weight percent consists of Al 4.5-10%, Zn 0.3-1%, Mn 0.1-0.6%, Gd 0.1-2%, Nb 0.05-1%, Li 0.05-4%, all the other are Mg.
5. according to each described magnesiumalloy of claim 1-3, it is characterized in that its weight percent consists of Al 1.5-2.5%, Zn 0.3-1%, Mn 0.1-0.6%, Gd 0.1-4%, Nb 0.05-1%, Li 0.001-4%, all the other are Mg.
6. according to each described magnesiumalloy of claim 1-4, it is characterized in that its weight percent consists of Al 7-9.7%, Zn 0.35-1%, Mn 0.1-0.6%, Gd 0.1-0.8%, Nb 0.05-0.6%, Li 0.05-4%, all the other are Mg.
7. according to each described magnesiumalloy of claim 1-4, it is characterized in that its weight percent consists of Al 8%, Zn0.5%, Mn 0.4%, Gd 0.4%, Nb 0.3%, Li 2%, all the other are Mg.
8. magnesiumalloy according to claim 1 is characterized in that, said Nb adds said magnesiumalloy through the form of AlNb master alloy or NbAl master alloy.
CN2012101077798A 2012-04-13 2012-04-13 Magnesium alloy with hot cracking resistance and low linear shrinkage Pending CN102618764A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103911534A (en) * 2014-04-11 2014-07-09 芜湖职业技术学院 Rare earth magnesium alloy and preparation method thereof
CN104451305A (en) * 2014-12-23 2015-03-25 常熟市凯波冶金建材机械设备厂 Compressor bearing seat of gas turbine
CN104451315A (en) * 2014-12-23 2015-03-25 常熟市凯波冶金建材机械设备厂 Inner frame of gas turbine
CN105838950A (en) * 2014-12-02 2016-08-10 安立材料科技股份有限公司 Magnesium alloy
CN107779707A (en) * 2017-12-08 2018-03-09 浙江海洋大学 A kind of shock proof magnesium lithium alloy and preparation method thereof
US10280496B2 (en) 2016-01-07 2019-05-07 Amli Materials Technology Co., Ltd. Light magnesium alloy and method for forming the same
CN113005345A (en) * 2021-02-20 2021-06-22 维欧(天津)能源技术服务股份有限公司 High-temperature mechanical property biphase magnesium-lithium alloy and processing technology thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08134581A (en) * 1994-11-14 1996-05-28 Mitsui Mining & Smelting Co Ltd Production of magnesium alloy
CN101353746A (en) * 2008-09-11 2009-01-28 上海交通大学 Ca and heavy rare earth Gd-containing die-casting heat resisting magnesium alloy and preparation thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08134581A (en) * 1994-11-14 1996-05-28 Mitsui Mining & Smelting Co Ltd Production of magnesium alloy
CN101353746A (en) * 2008-09-11 2009-01-28 上海交通大学 Ca and heavy rare earth Gd-containing die-casting heat resisting magnesium alloy and preparation thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103911534A (en) * 2014-04-11 2014-07-09 芜湖职业技术学院 Rare earth magnesium alloy and preparation method thereof
CN105838950A (en) * 2014-12-02 2016-08-10 安立材料科技股份有限公司 Magnesium alloy
CN104451305A (en) * 2014-12-23 2015-03-25 常熟市凯波冶金建材机械设备厂 Compressor bearing seat of gas turbine
CN104451315A (en) * 2014-12-23 2015-03-25 常熟市凯波冶金建材机械设备厂 Inner frame of gas turbine
US10280496B2 (en) 2016-01-07 2019-05-07 Amli Materials Technology Co., Ltd. Light magnesium alloy and method for forming the same
CN107779707A (en) * 2017-12-08 2018-03-09 浙江海洋大学 A kind of shock proof magnesium lithium alloy and preparation method thereof
CN107779707B (en) * 2017-12-08 2019-08-02 浙江海洋大学 A kind of shock proof magnesium lithium alloy and preparation method thereof
CN113005345A (en) * 2021-02-20 2021-06-22 维欧(天津)能源技术服务股份有限公司 High-temperature mechanical property biphase magnesium-lithium alloy and processing technology thereof

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Application publication date: 20120801