JPH09104955A - Method for heat treating magnesinum-yttrium-rare earth-zirconium base alloy - Google Patents
Method for heat treating magnesinum-yttrium-rare earth-zirconium base alloyInfo
- Publication number
- JPH09104955A JPH09104955A JP28656695A JP28656695A JPH09104955A JP H09104955 A JPH09104955 A JP H09104955A JP 28656695 A JP28656695 A JP 28656695A JP 28656695 A JP28656695 A JP 28656695A JP H09104955 A JPH09104955 A JP H09104955A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- aging treatment
- rare earth
- treatment
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 19
- 239000000956 alloy Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 13
- 229910052726 zirconium Inorganic materials 0.000 title claims abstract description 5
- 230000032683 aging Effects 0.000 claims abstract description 45
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 13
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 10
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims description 24
- 230000035882 stress Effects 0.000 abstract description 2
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 6
- 239000011777 magnesium Substances 0.000 description 6
- 229910000861 Mg alloy Inorganic materials 0.000 description 5
- 238000005266 casting Methods 0.000 description 3
- 229910052779 Neodymium Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 2
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は航空機又はレース車部品
等に使用されるＭｇ−Ｙ−ＲＥ（希土類元素）−Ｚｒ系
合金（ＡＳＴＭ ＷＥ４３Ａ合金及びＷＥ５４Ａ合金）
の熱処理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a Mg-Y-RE (rare earth element) -Zr alloy (ASTM WE43A alloy and WE54A alloy) used for aircraft or racing car parts.
The heat treatment method of
【０００２】[0002]
【従来の技術】従来のＭｇ−Ｙ−ＲＥ−Ｚｒ系合金とし
ては、イットリウムを６０重量％と残部希土類元素から
なる合金のイットリウム成分の１．５乃至１０重量％
と、少なくともネオジム６０重量％とランタン２５重量
％以下と実質的に残部プラセオジムからなるネオジム成
分の１乃至６重量％と、残部マグネシウムからなる鋳造
用マグネシウム合金が開示されている（特公平３−７２
６９５号公報）。この公知文献に記載されたマグネシウ
ム合金の鋳造製品の熱処理方法は、溶体化処理した後、
焼き入れし、その後、人工時効処理するものである。即
ち、５２５℃に８時間加熱し、熱水又はポリマー中に焼
き入れ処理した後、２５０℃に１６時間加熱して時効処
理する熱処理方法が開示されている。2. Description of the Related Art As a conventional Mg-Y-RE-Zr-based alloy, yttrium is contained in an amount of 60% by weight and the balance thereof is 1.5 to 10% by weight of the yttrium component of an alloy composed of rare earth elements.
And a magnesium alloy for casting comprising at least 60% by weight of neodymium and 25% by weight or less of lanthanum, 1 to 6% by weight of the neodymium component substantially consisting of the balance praseodymium, and the balance magnesium (Japanese Patent Publication No. 3-72).
No. 695). The heat treatment method for the cast product of the magnesium alloy described in this known document is, after solution treatment,
It is hardened and then artificially aged. That is, there is disclosed a heat treatment method of heating at 525 ° C. for 8 hours, quenching in hot water or a polymer, and then heating at 250 ° C. for 16 hours to perform aging treatment.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、この従
来の熱処理方法においては、伸びを向上させることがで
きるものの、耐力値が低下してしまうという難点があ
る。航空機又はレース車用部品等の機械的特性として
は、高強度及び高靭性が要求される。従来の熱処理方法
においては、２００乃至３００℃の人工時効時間を調節
しても、引張強度及び耐力を損なうことなく、伸びを高
めることはできない。However, in this conventional heat treatment method, although elongation can be improved, there is a drawback that the yield strength value is lowered. High mechanical strength and high toughness are required as mechanical properties of parts for aircraft or race cars. In the conventional heat treatment method, even if the artificial aging time of 200 to 300 ° C. is adjusted, the elongation cannot be increased without impairing the tensile strength and the yield strength.
【０００４】本発明はかかる問題点に鑑みてなされたも
のであって、耐力値を低下させることなく、伸びを向上
させることができるＭｇ−Ｙ−ＲＥ−Ｚｒ系合金の熱処
理方法を提供することを目的とする。The present invention has been made in view of the above problems, and provides a heat treatment method for a Mg-Y-RE-Zr alloy which can improve the elongation without lowering the yield strength. With the goal.
【０００５】[0005]
【課題を解決するための手段】本発明に係るＭｇ−Ｙ−
ＲＥ−Ｚｒ系合金の熱処理方法は、主成分がＭｇであ
り、Ｙ：３．７乃至４．３重量％、希土類元素：２．４
乃至４．４重量％、Ｚｒ：０．４重量％以上を含有する
Ｍｇ−Ｙ−ＲＥ−Ｚｒ系合金を、溶体化処理する工程
と、０乃至１５０℃の温度で１２時間以上時効処理する
第１時効処理工程と、２００乃至３００℃の温度で時効
処理する第２時効処理工程とを有することを特徴とす
る。MEANS FOR SOLVING THE PROBLEMS Mg-Y-according to the present invention
In the heat treatment method for the RE-Zr alloy, the main component is Mg, Y: 3.7 to 4.3% by weight, rare earth element: 2.4.
To 4.4 wt%, Zr: 0.4 wt% or more of the Mg-Y-RE-Zr-based alloy solution treatment, and aging treatment for 12 hours or more at a temperature of 0 to 150 ° C. It is characterized by having one aging treatment step and a second aging treatment step of aging treatment at a temperature of 200 to 300 ° C.
【０００６】また、本発明に係る他のＭｇ−Ｙ−ＲＥ−
Ｚｒ系合金の熱処理方法は、主成分がＭｇであり、Ｙ：
５．０乃至５．５重量％、希土類元素：１．５乃至２．
０重量％、Ｎｅ：１．５乃至２．０重量％、Ｚｒ：０．
４重量％以上を含有するＭｇ−Ｙ−ＲＥ−Ｚｒ系合金
を、溶体化処理する工程と、０乃至１５０℃の温度で１
２時間以上時効処理する第１時効処理工程と、２００乃
至３００℃の温度で時効処理する第２時効処理工程とを
有することを特徴とする。Further, another Mg-Y-RE- according to the present invention
In the heat treatment method for Zr-based alloys, the main component is Mg, and Y:
5.0 to 5.5% by weight, rare earth element: 1.5 to 2.
0% by weight, Ne: 1.5 to 2.0% by weight, Zr: 0.
Solution-treating a Mg-Y-RE-Zr-based alloy containing 4 wt% or more and 1 at a temperature of 0 to 150 ° C.
It is characterized by having a first aging treatment step of aging treatment for 2 hours or more and a second aging treatment step of aging treatment at a temperature of 200 to 300 ° C.
【０００７】主成分がＭｇであり、Ｙ：３．７乃至４．
３重量％、希土類元素：２．４乃至４．４重量％、Ｚ
ｒ：０．４重量％以上を含有するＭｇ−Ｙ−ＲＥ−Ｚｒ
系合金は、ＡＳＴＭ ＷＥ４３Ａ合金であり、Ｍｇ−Ｙ
−ＲＥ−Ｚｒ系合金の熱処理方法は、主成分がＭｇであ
り、Ｙ：５．０乃至５．５重量％、希土類元素：１．５
乃至２．０重量％、Ｎｅ：１．５乃至２．０重量％、Ｚ
ｒ：０．４重量％以上を含有するＭｇ−Ｙ−ＲＥ−Ｚｒ
系合金は、ＡＳＴＭ ＷＥ５４Ａ合金である。The main component is Mg, and Y: 3.7 to 4.
3% by weight, rare earth element: 2.4 to 4.4% by weight, Z
r: Mg-Y-RE-Zr containing 0.4% by weight or more
The system alloy is ASTM WE43A alloy, Mg-Y
In the heat treatment method for the —RE—Zr alloy, the main component is Mg, Y: 5.0 to 5.5% by weight, rare earth element: 1.5.
To 2.0% by weight, Ne: 1.5 to 2.0% by weight, Z
r: Mg-Y-RE-Zr containing 0.4% by weight or more
The system alloy is ASTM WE54A alloy.
【０００８】[0008]
【作用】本発明においては、溶体化処理した後、２００
℃以上の温度で時効処理する前に、０乃至１５０℃の温
度で１２時間以上時効処理する第１時効処理工程を有す
る。このように、比較的低温で時効処理した後、２００
℃以上の比較的高温で時効処理することにより、Ｍｇ−
Ｙ−ＲＥ−Ｚｒ系合金の耐力及び引張強度を損なうこと
なく、伸びを向上させることができる。In the present invention, after solution treatment, 200
It has a first aging treatment step of aging treatment at a temperature of 0 to 150 ° C. for 12 hours or more before aging treatment at a temperature of 0 ° C. or higher. Thus, after aging treatment at a relatively low temperature, 200
By aging treatment at a relatively high temperature of ℃ or more, Mg-
Elongation can be improved without impairing the yield strength and tensile strength of the Y-RE-Zr alloy.
【０００９】第１時効処理の熱処理温度は０乃至１５０
℃である。熱処理温度が１５０℃を超えると、伸びの向
上効果を得ることができない。また、熱処理時間が１２
時間未満であると、伸びを増大させることができない。The heat treatment temperature of the first aging treatment is 0 to 150.
° C. If the heat treatment temperature exceeds 150 ° C., the effect of improving elongation cannot be obtained. Also, the heat treatment time is 12
If it is less than time, elongation cannot be increased.
【００１０】更に、第２時効処理工程の熱処理温度は２
００乃至３００℃である。この熱処理温度が２００℃未
満であると、所望の強度を得るための熱処理時間が大幅
に伸び、生産性が低下する。一方、熱処理温度が３００
℃を超えると、強度が低下する。Further, the heat treatment temperature in the second aging treatment step is 2
The temperature is from 00 to 300 ° C. If the heat treatment temperature is lower than 200 ° C., the heat treatment time for obtaining the desired strength is significantly extended and the productivity is lowered. On the other hand, the heat treatment temperature is 300
When the temperature exceeds ° C, the strength decreases.
【００１１】[0011]
【実施例】以下、本発明の実施例について、その比較例
と比較して説明する。溶体化処理炉に装入する前の分析
値がＹ：３．８１重量％、Ｎｄ：２．２２重量％、Ｚ
ｒ：０．５５重量％、ＲＥ（希土類元素）：０．７重量
％を含有し、残部がＭｇであるマグネシウム合金を５２
５℃に６時間加熱して溶体化処理した。但し、希土類元
素としては、Ｙｂ（イッテルビウム）、Ｅｒ（エルビウ
ム）、Ｇｄ（ガドリウム）及びＤｙ（ジスプロシウム）
を含有する。EXAMPLES Examples of the present invention will be described below in comparison with comparative examples. The analytical values before charging into the solution heat treatment furnace were Y: 3.81% by weight, Nd: 2.22% by weight, Z
52: a magnesium alloy containing r: 0.55% by weight, RE (rare earth element): 0.7% by weight, and the balance being Mg.
The solution treatment was performed by heating at 5 ° C. for 6 hours. However, as rare earth elements, Yb (ytterbium), Er (erbium), Gd (gadolinium) and Dy (dysprosium) are used.
It contains.
【００１２】溶体化処理後、６０℃の温水に焼入れ処理
した。その後、約２０℃で０〜４８時間の自然時効を行
い、更にその後、２５０℃×１６時間の人工時効処理を
実施した。After the solution treatment, it was quenched in warm water at 60 ° C. Then, natural aging was performed at about 20 ° C. for 0 to 48 hours, and then, artificial aging treatment was performed at 250 ° C. for 16 hours.
【００１３】このときの２０℃の自然時効処理の経過時
間と機械的性質との関係を図１に示す。マグネシウム合
金の組成はＷＥ４３Ａで溶体化処理はＴ６処理（５２５
℃に６時間加熱）である。自然時効後の人工時効処理に
おいては、２５０℃に１６時間加熱したものである。こ
の図１に示すように、自然時効を行わない場合（自然時
効時間が０時間）に比較し、金型（パーマネントモール
ド）で鋳造した鋳物では２４時間自然時効処理した場
合、砂型（サンドモールド）で鋳造した鋳物では４８時
間自然時効処理した場合に、高い伸びが得られているこ
とがわかる。また、この際、引張強度及び耐力は損なわ
れていない。FIG. 1 shows the relationship between the elapsed time of the natural aging treatment at 20 ° C. and the mechanical properties at this time. The composition of the magnesium alloy is WE43A and the solution treatment is T6 treatment (525
(Heated to 6 ° C for 6 hours). In the artificial aging treatment after natural aging, heating was performed at 250 ° C. for 16 hours. As shown in FIG. 1, in comparison with the case where natural aging is not performed (natural aging time is 0 hour), in a casting cast with a mold (permanent mold), when natural aging treatment is performed for 24 hours, a sand mold (sand mold) is used. It can be seen that in the castings cast in step 1, a high elongation is obtained when subjected to natural aging treatment for 48 hours. At this time, the tensile strength and proof stress are not impaired.
【００１４】また、図２は横軸に自然時効４８時間の温
度とその伸び変化（自然時効効果）の関係を示す。マグ
ネシウム合金の組成はＷＥ４３Ａであり、溶体化処理は
５２５℃に６時間加熱し、自然時効処理は２０℃に４８
時間加熱したものである。この図２に示すように、自然
時効温度が０乃至１５０℃の範囲で、自然時効処理をし
ない場合に比して、伸びが上昇する。換言すれば、この
温度範囲で自然時効処理をすることにより、伸びが最大
で４％も向上する。Further, FIG. 2 shows the relationship between the temperature during 48 hours of natural aging and its change in elongation (natural aging effect) on the horizontal axis. The composition of the magnesium alloy is WE43A, the solution heat treatment is performed at 525 ° C for 6 hours, and the natural aging treatment is performed at 20 ° C for 48 hours.
Heated for hours. As shown in FIG. 2, the elongation increases in the natural aging temperature range of 0 to 150 ° C. as compared with the case where the natural aging treatment is not performed. In other words, elongation is improved by up to 4% by performing natural aging treatment in this temperature range.
【００１５】[0015]
【発明の効果】以上説明したように、本発明によれば、
耐力及び引張強度を低下させることなく、Ｍｇ−Ｙ−Ｒ
Ｅ−Ｚｒ系合金の伸びを向上させることができる。As described above, according to the present invention,
Mg-Y-R without reducing yield strength and tensile strength
It is possible to improve the elongation of the E-Zr alloy.
【図１】約２０℃の自然時効時間と、機械的性質との関
係を示すグラフ図である。FIG. 1 is a graph showing the relationship between a natural aging time of about 20 ° C. and mechanical properties.
【図２】自然時効温度と伸び変化との関係を示すグラフ
図である。FIG. 2 is a graph showing a relationship between natural aging temperature and elongation change.
Claims (2)
４．３重量％、希土類元素：２．４乃至４．４重量％、
Ｚｒ：０．４重量％以上を含有するＭｇ−Ｙ−ＲＥ−Ｚ
ｒ系合金を、溶体化処理する工程と、０乃至１５０℃の
温度で１２時間以上時効処理する第１時効処理工程と、
２００乃至３００℃の温度で時効処理する第２時効処理
工程とを有することを特徴とするＭｇ−Ｙ−ＲＥ−Ｚｒ
系合金の熱処理方法。1. A main component is Mg, Y: 3.7 to 4.3% by weight, rare earth element: 2.4 to 4.4% by weight,
Zr: Mg-Y-RE-Z containing 0.4% by weight or more
a step of solution-treating the r-based alloy, a first aging step of aging at a temperature of 0 to 150 ° C. for 12 hours or more;
Mg-Y-RE-Zr, which has a second aging treatment step of aging treatment at a temperature of 200 to 300 ° C.
Method for heat treatment of base alloys.
５．５重量％、希土類元素：１．５乃至２．０重量％、
Ｎｅ：１．５乃至２．０重量％、Ｚｒ：０．４重量％以
上を含有するＭｇ−Ｙ−ＲＥ−Ｚｒ系合金を、溶体化処
理する工程と、０乃至１５０℃の温度で１２時間以上時
効処理する第１時効処理工程と、２００乃至３００℃の
温度で時効処理する第２時効処理工程とを有することを
特徴とするＭｇ−Ｙ−ＲＥ−Ｚｒ系合金の熱処理方法。2. The main component is Mg, Y: 5.0 to 5.5% by weight, rare earth element: 1.5 to 2.0% by weight,
Solution-treating a Mg-Y-RE-Zr-based alloy containing Ne: 1.5 to 2.0 wt% and Zr: 0.4 wt% or more, and a temperature of 0 to 150 ° C for 12 hours. A heat treatment method for an Mg-Y-RE-Zr-based alloy, which has the first aging treatment step of aging treatment described above and the second aging treatment step of aging treatment at a temperature of 200 to 300 ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28656695A JPH09104955A (en) | 1995-10-07 | 1995-10-07 | Method for heat treating magnesinum-yttrium-rare earth-zirconium base alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28656695A JPH09104955A (en) | 1995-10-07 | 1995-10-07 | Method for heat treating magnesinum-yttrium-rare earth-zirconium base alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09104955A true JPH09104955A (en) | 1997-04-22 |
Family
ID=17706075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28656695A Pending JPH09104955A (en) | 1995-10-07 | 1995-10-07 | Method for heat treating magnesinum-yttrium-rare earth-zirconium base alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09104955A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100448127B1 (en) * | 2002-04-19 | 2004-09-10 | 현대자동차주식회사 | Preparation method of Mg alloy for improvement of high temperature strength |
| WO2010038016A1 (en) * | 2008-09-30 | 2010-04-08 | Magnesium Elektron Limited | Magnesium alloys containing rare earths |
| CN102877014A (en) * | 2012-09-13 | 2013-01-16 | 燕山大学 | Thermal treatment method suitable for magnetism alloy with age-hardening property |
| CN102892909A (en) * | 2010-03-25 | 2013-01-23 | 镁电子有限公司 | Magnesium alloys containing heavy rare earths |
| CN106834851A (en) * | 2016-12-16 | 2017-06-13 | 包头稀土研究院 | Rare earth Mg-Zr alloys and preparation method thereof |
| CN109351980A (en) * | 2018-12-06 | 2019-02-19 | 南京理工大学 | Method for preparing multi-scale precipitation-strengthened magnesium alloy material by hot pressing sintering |
| CN109609825A (en) * | 2018-12-28 | 2019-04-12 | 北京工业大学 | A method for preparing ultra-high-strength magnesium alloy by pre-stretching composite double-stage aging process |
-
1995
- 1995-10-07 JP JP28656695A patent/JPH09104955A/en active Pending
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| KR100448127B1 (en) * | 2002-04-19 | 2004-09-10 | 현대자동차주식회사 | Preparation method of Mg alloy for improvement of high temperature strength |
| WO2010038016A1 (en) * | 2008-09-30 | 2010-04-08 | Magnesium Elektron Limited | Magnesium alloys containing rare earths |
| CN102187004A (en) * | 2008-09-30 | 2011-09-14 | 镁电子有限公司 | Magnesium alloys containing rare earths |
| JP2012504186A (en) * | 2008-09-30 | 2012-02-16 | マグネシウム エレクトロン リミテッド | Magnesium alloy containing rare earth elements |
| US9017604B2 (en) | 2008-09-30 | 2015-04-28 | Magnesium Elektron Limited | Magnesium alloys containing rare earths |
| AU2009299656B2 (en) * | 2008-09-30 | 2014-03-06 | Magnesium Elektron Limited | Magnesium alloys containing rare earths |
| US20130195714A1 (en) * | 2010-03-25 | 2013-08-01 | Magnesium Elektron Limited | Magnesium alloys containing heavy rare earths |
| CN102892909A (en) * | 2010-03-25 | 2013-01-23 | 镁电子有限公司 | Magnesium alloys containing heavy rare earths |
| US9920402B2 (en) * | 2010-03-25 | 2018-03-20 | Magnesium Elektron Limited | Magnesium alloys containing heavy rare earths |
| CN102877014A (en) * | 2012-09-13 | 2013-01-16 | 燕山大学 | Thermal treatment method suitable for magnetism alloy with age-hardening property |
| CN106834851A (en) * | 2016-12-16 | 2017-06-13 | 包头稀土研究院 | Rare earth Mg-Zr alloys and preparation method thereof |
| CN109351980A (en) * | 2018-12-06 | 2019-02-19 | 南京理工大学 | Method for preparing multi-scale precipitation-strengthened magnesium alloy material by hot pressing sintering |
| CN109351980B (en) * | 2018-12-06 | 2022-05-10 | 南京理工大学 | Method for preparing multi-scale precipitation-strengthened magnesium alloy material by hot pressing sintering |
| CN109609825A (en) * | 2018-12-28 | 2019-04-12 | 北京工业大学 | A method for preparing ultra-high-strength magnesium alloy by pre-stretching composite double-stage aging process |
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