CN102409213B - Preparation method of high-strength magnesium alloy enhanced by heat treatment - Google Patents
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Abstract
The invention discloses a high-strength magnesium alloy enhanced by heat treatment. The magnesium alloy comprise the following components by weight percent: 3-8% of Gd, 1-6% of Y, 0.5-3.5% of Zn, 0.5-2.5% of Mn, less than or equal to 1.0% of Zr and the balance of Mg. The preparation method comprises the following steps of: placing magnesium powder in a hole drilled by a magnesium ingot, and spraying a fusing agent on the magnesium ingot for smelting together; warming molten magnesium and then adding warmed molten magnesium in intermediate alloys namely Mg-Y and Mg-Gd and stirring; warming again and then adding a Mg-Zr intermediate alloy to stir; after cooling, adding an industrial pure Zn ingot and stirring, and then refining an alloy liquid, and pouring the refined alloy liquid in a preheated bottom injection type metal mold so as to obtain a magnesium alloy ingot; and insulating the magnesium alloy ingot for 6-18 hours at the temperature of 450-520 DEG C, then cooling at the air, subsequently, ageing, and then extruding to prepare a bar material. By using the method of the invention, the problems of high addition amount of the existing magnesium alloy rare earth and expensive cost caused by a complicated preparation process are solved.
Description
Technical field
The invention belongs to metallic substance and metallurgical technology field, relate in particular to a kind of high-strength magnesium alloy of heat treatment reinforcement, the invention still further relates to the preparation method of this high-strength magnesium alloy.
Background technology
Magnesium alloy is as the lightest practical metallic substance, it has high specific tenacity and specific rigidity, good diamagnetism, high electronegativity and thermal conductivity, good antidetonation damping capaicty and good machining, easily recycling, aboundresources has in addition become the preferred material in fields such as automobile, 3C industry, aircraft industry.Along with the expansion of magnesium alloy Application Areas, Mg Alloy Research and exploitation have also entered the New Times.But the tensile strength of magnesium alloy and yield strength generally are lower than 300MPa and 200MPa.In addition, the high-temperature behavior difference also is to hinder the one of the main reasons of magnesium alloy widespread use.The mechanical property of pure magnesium is relatively poor, often directly do not use as structured material, but the integrated use by several different methods or these methods such as strain-hardening, grain refining, alloying, heat treatment reinforcement, magnesium base be compound improves the mechanical property of magnesium significantly.The alloying of magnesium is the most basic in the reality, the most frequently used and the most effective reinforcement approach in these methods, and the selection of alloying element and thermal treatment process are the keys of strengthening.So by in alloy, add a certain amount of trace element and by thermal treatment process obtain composition evenly, organize tinyly, excellent performance and the comprehensive good magnesium alloy of mechanical property become the important research direction in magnesium alloy field.
For intensity and the thermotolerance that improves magnesium alloy, in the selection of alloying element, all obtain high-strength magnesium alloy to add a large amount of rare earth elements and to pass through complicated technology.King's canal east disclosed patent " rare earth-containing high strength heat resisting magnesium alloy and preparation method thereof " (application number: 200910045405.6, publication number: CN101463441A, open day: 2009.6.24) composition of the high-strength heat-resistant magnesium alloy of its preparation was 3%≤Y≤16%, 0%≤Gd≤10%, 0%≤Ca≤5%, 0.1%≤Zr≤1.5%, surplus are Mg and other.After heat treatment, the instantaneous ultimate tensile strength its 300 ℃ the time is 262MPa.Zhang Lei, Dong Xuanpu, " ageing strengthening of Mg-15Gd-3Y extruded alloy " of the strong co-present of Li Ji (China YouSe Acta Metallurgica Sinica, 2010,20 (4): 600-605) by its room temperature tensile strength after the Mg-15Gd-3Y alloy extruding timeliness is reached 446.67MPa.Xiao Yang, Zhang Xinming, (Central South University's journal, 2006,37 (5): 851-855) prepared Mg-9Gd-4Y-0.6Zr alloy room temperature tensile strength is 370MPa to " performance of high-strength temperature-resistant Mg-9Gd-4Y-0.6Zr alloy " of Chen Jianmei co-present.But related high-strength heat-resistant magnesium alloy all adopts the rare earth element of high level in above-mentioned disclosed patent and the document, rare earth element is not only expensive, and than great, prepare high-strength heat-resistant magnesium alloy by the interpolation high rare-earth content and will cause the cost of alloy significantly to improve.
Celestial disclosed patent " a kind of preparation method of the magnesium alloy with high strength and ductility " (application number: 200810112215.7 of Zhang Ji; publication number: CN101279361A, open day: 2008.10.8) adopt the high-strength magnesium alloy room temperature tensile strength of gas shield jet deposition forming technique preparation to reach 435MPa.But its jet deposition apparatus expensive, complicated process of preparation, industrialization difficulty.
Summary of the invention
The high-strength magnesium alloy that the purpose of this invention is to provide a kind of heat treatment reinforcement has overcome existing magnesium alloy rare-earth addition height, complicated process of preparation and the problem with high costs that causes.
Technical scheme of the present invention is that a kind of high-strength magnesium alloy of heat treatment reinforcement according to mass percent, is made up of following each component: Gd:3-8%, Y:1-6%, Zn:0.5-3.5%, Mn:0.5-2.5%, Zr≤1.0%, all the other are Mg, above each component mass percent summation is 100%.
Characteristics of the present invention also are,
The mass percent summation of Gd and Y was not more than 10% of total mass mark during component was formed.
The present invention also provides the preparation method of above-mentioned magnesium alloy, carries out according to following steps:
Step 1, get prior hole-drilled magnesium ingot, Mg-Gd master alloy, Mg-Y master alloy, technical pure Zn ingot, Mn powder and Mg-Zr master alloy respectively, make that relationship between quality satisfies following mass percent: Gd:3-8% between each material, Y:1-6%, Zn:0.5-3.5%, Mn:0.5-2.5%, Zr≤1.0%, all the other are Mg, and component form in the mass percent summation of Gd and Y be not more than 10% of total mass mark;
Step 2, the Mn powder that step 1 is taken by weighing places the prior hole well of boring on the magnesium ingot, sprinkle flux at magnesium ingot, and together put into well formula resistance furnace and melt, and make the magnesium liquid temp rise to 720-750 ℃, added Mg-Y and Mg-Gd master alloy mechanical stirring again 15 minutes, then the molten metal temperature is risen to 785-800 ℃, add the Mg-Zr master alloy, and mechanical stirring 10-15 minute, molten metal is cooled to 720-740 ℃ at last, added technical pure Zn ingot and mechanical stirring 10 minutes, and then the alloy liquid temp was risen to 745-785 ℃ and carry out refining treatment, temperature is adjusted to 750-760 ℃ again, pour in the bottom filling metal mold of preheating, obtain magnesium alloy ingot;
Step 3, the magnesium alloy ingot that step 2 is obtained is incubated 6-18 hour at 450-520 ℃, cools off in air then, in 6-24 hour ageing treatment of 220-300 ℃ of insulation, is crushed to bar at last more afterwards.
Wherein the Mn powder directly is the 50-200 order in the step 1.
Wherein flux adopts industrial RJ-2 flux in the step 2, and the addition of solvent is the 5-10% of institute's molten alloy quality.
Wherein the preheating temperature of bottom filling metal mold is 350 ℃ ± 10 ℃ in the step 2.
Extrusion ratio when wherein being crushed to bar in the step 3 is 1: 5-20, extrusion temperature are 260-350 ℃.
The invention has the beneficial effects as follows, make the alloy microtexture possess long period stacking order structure by appropriate alloying and preferred thermal treatment process, the alloy ree content is few, density is low, cheap, simple to operate, both had the room temperature high strength, under hot conditions, also had excellent mechanical performances.
Embodiment
The present invention is described in detail below in conjunction with embodiment.
The invention provides a kind of high-strength magnesium alloy of heat treatment reinforcement, according to mass percent, formed by following each component: Gd:3-8%, Y:1-6%, Zn:0.5-3.5%, Mn:0.5-2.5%, Zr≤1.0%, all the other are Mg, above each component mass percent summation is 100%.Wherein the mass percent summation of Gd and Y is not more than 10% of total mass mark.
The present invention also provides the preparation method of above-mentioned magnesium alloy, carries out according to following steps:
Step 1, get prior hole-drilled magnesium ingot, Mg-Gd master alloy, Mg-Y master alloy, technical pure Zn ingot, Mn powder and Mg-Zr master alloy respectively, make that relationship between quality satisfies following mass percent: Gd:3-8% between each material, Y:1-6%, Zn:0.5-3.5%, Mn:0.5-2.5%, Zr≤1.0%, all the other are Mg, and component form in the mass percent summation of Gd and Y be not more than 10% of total mass mark;
Step 2, the 50-200 purpose Mn powder that step 1 is taken by weighing places the prior hole well of boring on the magnesium ingot, 5-10% according to the molten alloy quality takes by weighing industrial RJ-2 flux, sprinkle flux at magnesium ingot, and together put into well formula resistance furnace and melt, and make the magnesium liquid temp rise to 720-750 ℃, added Mg-Y and Mg-Gd master alloy mechanical stirring again 15 minutes, then the molten metal temperature is risen to 785-800 ℃, add the Mg-Zr master alloy, and mechanical stirring 10-15 minute, molten metal is cooled to 720-740 ℃ at last, added technical pure Zn ingot and mechanical stirring 10 minutes, then the alloy liquid temp is risen to 745-785 ℃ and carry out refining treatment, temperature is adjusted to 750-760 ℃ again, pours into preheating temperature and be in 350 ℃ ± 10 ℃ the bottom filling metal mold, obtain magnesium alloy ingot;
Step 3, the magnesium alloy ingot that step 2 is obtained is incubated 6-18 hour at 450-520 ℃, cools off in air then, afterwards in 6-24 hour ageing treatment of 220-300 ℃ of insulation, be crushed to bar at last again, extrusion ratio is 1: 5-20, extrusion temperature are 260-350 ℃.
Embodiment 1
Alloying constituent consists of by mass percentage: 3%Gd, and 4%Y, 3.5%Zn, 1.5%Mn, 0.8%Zr, all the other are Mg and unavoidable impurities.
Alloy casting technology is: the 50-200 purpose Mn powder that at first will take by weighing places and bores good hole on the magnesium ingot in advance, take by weighing industrial RJ-2 flux according to 5% of molten alloy quality, sprinkle flux at magnesium ingot, and together put into well formula resistance furnace and melt, and make the magnesium liquid temp rise to 720 ℃, added Mg-Y and Mg-Gd master alloy mechanical stirring again 15 minutes, then the molten metal temperature is risen to 790 ℃, add the Mg-Zr master alloy, and mechanical stirring 10 minutes, molten metal is cooled to 720 ℃ at last, added technical pure Zn ingot and mechanical stirring 10 minutes, and then the alloy liquid temp was risen to 760 ℃ and carry out refining treatment, temperature is adjusted to 750 ℃ again, pour into preheating temperature and be in 350 ℃ ± 10 ℃ the bottom filling metal mold, obtain magnesium alloy ingot.
The cast alloy thermal treatment process is: with 520 ℃ of solution treatment of magnesium alloy ingot 18 hours, cool off in air then, afterwards 220 ℃ of isothermal agings 24 hours.By being crushed to bar, its extrusion ratio is 1: 5 then, and extrusion temperature is 310 ℃.Still have long period stacking order structure in its microstructure of the extruded bars that obtains, the shared matrix area ratio of this structure is 65%.
The high-strength magnesium alloy of present embodiment gained, its room temperature tensile strength is 361MPa, unit elongation is 8%.
Embodiment 2
Alloying constituent consists of by weight percentage: 5%Gd, and 4%Y, 1%Zn, 1.5%Mn, 0.8%Zr, all the other are Mg and unavoidable impurities.
Alloy casting technology is: the 50-200 purpose Mn powder that step 1 is taken by weighing places the prior hole well of boring on the magnesium ingot, take by weighing industrial RJ-2 flux according to 7% of molten alloy quality, sprinkle flux at magnesium ingot, and together put into well formula resistance furnace and melt, and make the magnesium liquid temp rise to 740 ℃, added Mg-Y and Mg-Gd master alloy mechanical stirring again 15 minutes, then the molten metal temperature is risen to 785 ℃, add the Mg-Zr master alloy, and mechanical stirring 15 minutes, molten metal is cooled to 730 ℃ at last, added technical pure Zn ingot and mechanical stirring 10 minutes, and then the alloy liquid temp was risen to 745 ℃ and carry out refining treatment, temperature is adjusted to 755 ℃ again, pour into preheating temperature and be in 350 ℃ ± 10 ℃ the bottom filling metal mold, obtain magnesium alloy ingot;
The cast alloy thermal treatment process is: magnesium alloy ingot 450 ℃ of solution treatment 10 hours, is cooled off then 260 ℃ of isothermal agings 8 hours in air.By being crushed to bar, its extrusion ratio is 1: 10 then, and extrusion temperature is 350 ℃.Still have long period stacking order structure in its microstructure of the extruded bars that obtains, the shared matrix area ratio of this structure is 70%.
The high-strength heat-resistant magnesium alloy of present embodiment gained, its room temperature tensile strength is 382MPa, unit elongation is 6%.
Embodiment 3
Alloying constituent consists of by weight percentage: 8%Gd, and 1%Y, 1%Zn, 0.5%Mn, 0.8%Zr, all the other are Mg and unavoidable impurities.
Alloy casting technology is: the 50-200 purpose Mn powder that step 1 is taken by weighing places the prior hole well of boring on the magnesium ingot, take by weighing industrial RJ-2 flux according to 10% of molten alloy quality, sprinkle flux at magnesium ingot, and together put into well formula resistance furnace and melt, and make the magnesium liquid temp rise to 750 ℃, added Mg-Y and Mg-Gd master alloy mechanical stirring again 15 minutes, then the molten metal temperature is risen to 800 ℃, add the Mg-Zr master alloy, and mechanical stirring 13 minutes, molten metal is cooled to 740 ℃ at last, added technical pure Zn ingot and mechanical stirring 10 minutes, and then the alloy liquid temp was risen to 785 ℃ and carry out refining treatment, temperature is adjusted to 760 ℃ again, pour into preheating temperature and be in 350 ℃ ± 10 ℃ the bottom filling metal mold, obtain magnesium alloy ingot;
The cast alloy thermal treatment process is: magnesium alloy ingot 520 ℃ of solution treatment 6 hours, is cooled off then 240 ℃ of isothermal agings 6 hours in air.By being crushed to bar, its extrusion ratio is 1: 20 then, and extrusion temperature is 300 ℃.Still have long period stacking order structure in its microstructure of the extruded bars that obtains, the shared matrix area ratio of this structure is 75%.
The high-strength heat-resistant magnesium alloy of present embodiment gained, its room temperature tensile strength is 396MPa, unit elongation is 8%.
Embodiment 4
Alloying constituent consists of by weight percentage: 6%Gd, and 4%Y, 0.5%Zn, 1.5%Mn, 0.8%Zr, all the other are Mg and unavoidable impurities.
Alloy casting technology is: the 50-200 purpose Mn powder that at first will take by weighing places and bores good hole on the magnesium ingot in advance, take by weighing industrial RJ-2 flux according to 5% of molten alloy quality, sprinkle flux at magnesium ingot, and together put into well formula resistance furnace and melt, and make the magnesium liquid temp rise to 720 ℃, added Mg-Y and Mg-Gd master alloy mechanical stirring again 15 minutes, then the molten metal temperature is risen to 790 ℃, add the Mg-Zr master alloy, and mechanical stirring 10 minutes, molten metal is cooled to 720 ℃ at last, added technical pure Zn ingot and mechanical stirring 10 minutes, and then the alloy liquid temp was risen to 760 ℃ and carry out refining treatment, temperature is adjusted to 750 ℃ again, pour into preheating temperature and be in 350 ℃ ± 10 ℃ the bottom filling metal mold, obtain magnesium alloy ingot.
The cast alloy thermal treatment process is: magnesium alloy ingot 480 ℃ of solution treatment 12 hours, is cooled off then 260 ℃ of isothermal agings 8 hours in air.By being crushed to bar, its extrusion ratio is 1: 12.5 then, and extrusion temperature is 260 ℃.Still have long period stacking order structure in its microstructure of the extruded bars that obtains, the shared matrix area ratio of this structure is 75%.
The high-strength heat-resistant magnesium alloy of present embodiment gained, its room temperature tensile strength is 416MPa, unit elongation is 6.1%.
Embodiment 5
Alloying constituent consists of by weight percentage: 4%Gd, and 6%Y, 1%Zn, 2.5%Mn, 0.6%Zr, all the other are Mg and unavoidable impurities.
Alloy casting technology is: the 50-200 purpose Mn powder that at first will take by weighing places and bores good hole on the magnesium ingot in advance, take by weighing industrial RJ-2 flux according to 5% of molten alloy quality, sprinkle flux at magnesium ingot, and together put into well formula resistance furnace and melt, and make the magnesium liquid temp rise to 720 ℃, added Mg-Y and Mg-Gd master alloy mechanical stirring again 15 minutes, then the molten metal temperature is risen to 790 ℃, add the Mg-Zr master alloy, and mechanical stirring 10 minutes, molten metal is cooled to 720 ℃ at last, added technical pure Zn ingot and mechanical stirring 10 minutes, and then the alloy liquid temp was risen to 760 ℃ and carry out refining treatment, temperature is adjusted to 750 ℃ again, pour into preheating temperature and be in 350 ℃ ± 10 ℃ the bottom filling metal mold, obtain magnesium alloy ingot.
The cast alloy thermal treatment process is: with magnesium alloy ingot at 10 hours air coolings of 500 ℃ of solution treatment, 300 ℃ of isothermal agings 8 hours.By being crushed to bar, its extrusion ratio is 1: 12.5 then, and extrusion temperature is 300 ℃.Still have long period stacking order structure in its microstructure of the extruded bars that obtains, the shared matrix area ratio of this structure is 75%.
The high-strength heat-resistant magnesium alloy of present embodiment gained, its room temperature tensile strength is 405MPa, unit elongation is 5.2%.
The present invention, compares with the magnesium alloy that prior art is prepared again through the high-strength magnesium alloy of thermal treatment and crimp preparation by common founding, and the total amount of added rare earth is obviously little, thus the cost of alloy reduction, and be interpolation Mn in this alloy; Melting technology of the present invention, thermal treatment process and follow-up processing all have notable difference with prior art in addition, and the alloy room temperature strength that obtains obviously is better than the magnesium alloy that prior art for preparing goes out.
In a word, the present invention adopts and adds rare earth element Gd, Y, but add-on much smaller than existing patent and document, purpose is by technological measures such as appropriate alloying and preferred thermal treatment reduction cost of alloy, gives full play to magnesium alloy low density structures properties of materials.
Among the present invention after heat treatment the area percentage of the shared crystal grain of formed long period stacking order structure more than 90%.
Middle-weight rare earths Gd of the present invention, Y add with Mg-Gd, Mg-Y master alloy respectively.The adding of Gd, Y all can be played the effect of refinement microtexture, and Y, the Gd solid solubility in Mg is very big, can improve the mechanical property of alloy by solution strengthening and aging precipitation precipitation strength.
The a spot of Mn of interpolation, Zr element have not only improved plasticity and the hot workability of alloy among the present invention, and because the partial solid solubility of Zr in magnesium, Zr can be used as heterogeneous forming core core crystal grain thinning, and Zr adopts Mg-Zr master alloy mode to add, and Mn can also improve the creep-resistant property of alloy.
Add cheap Zn element among the present invention, not only can form Mg7Zn3 and MgZn strengthening phase with magnesium, and form rare earth compound reinforcement crystal boundary with Gd, Y rare earth element.Can form long period stacking order structure by spinodal decomposition by rational heat treatment Gd, Y, Zn, Mg atom in addition, this structure has been proved and can have obviously improved the intensity of alloy and the thermostability of alloy.
By adjusting each component proportioning, use common founding and can prepare cheap high strength, low density magnesium alloy by rational heat treatment technology and crimp among the present invention.This magnesium alloy not only has excellent room temperature high-strong toughness and high temperature tensile properties, and has plastic deformation ability and hot workability preferably.Its room temperature tensile strength 350-410MPa, unit elongation 5-15%.
Claims (3)
1. the preparation method of the high-strength magnesium alloy of a heat treatment reinforcement is characterized in that, carries out according to following steps:
Step 1, get prior hole-drilled magnesium ingot, Mg-Gd master alloy, Mg-Y master alloy, technical pure Zn ingot, Mn powder and Mg-Zr master alloy respectively, make that relationship between quality satisfies following mass percent: Gd:3-8% between each material, Y:1-6%, Zn:0.5-3.5%, Mn:0.5-2.5%, Zr≤1.0%, all the other are Mg, and component form in the mass percent summation of Gd and Y be not more than 10% of total mass mark;
Step 2, the Mn powder that step 1 is taken by weighing places the prior hole well of boring on the magnesium ingot, sprinkle flux at magnesium ingot, and together put into well formula resistance furnace and melt, and make the magnesium liquid temp rise to 720-750 ℃, added Mg-Y and Mg-Gd master alloy mechanical stirring again 15 minutes, then the molten metal temperature is risen to 785-800 ℃, add the Mg-Zr master alloy, and mechanical stirring 10-15 minute, molten metal is cooled to 720-740 ℃ at last, added technical pure Zn ingot and mechanical stirring 10 minutes, then the alloy liquid temp is risen to 745-785 ℃ and carry out refining treatment, temperature is adjusted to 750-760 ℃ again, pour in the bottom filling metal mold, obtain magnesium alloy ingot, the preheating temperature of metal mold is 350 ℃ ± 10 ℃;
Step 3, the magnesium alloy ingot that step 2 is obtained is incubated 6-18 hour at 450-520 ℃, cools off in air then, afterwards in 6-24 hour ageing treatment of 220-300 ℃ of insulation, be crushed to bar at last again, extrusion ratio is 1:5-20, and extrusion temperature is 260-350 ℃.
2. method according to claim 1 is characterized in that, the Mn powder directly is the 50-200 order in the step 1.
3. method according to claim 1 is characterized in that, flux adopts industrial RJ-2 flux in the step 2, and the addition of flux is the 5-10% of institute's molten alloy quality.
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| CN102732763B (en) * | 2012-05-24 | 2013-11-06 | 重庆大学 | High-strength Mg-Gd-Y-Zn-Mn alloy |
| CN103205660A (en) * | 2012-10-24 | 2013-07-17 | 哈尔滨东安发动机（集团）有限公司 | Heat treatment method for MgYNdZr alloy |
| CN103849801B (en) * | 2012-12-04 | 2016-08-24 | 中国兵器科学研究院宁波分院 | A kind of high-strength heat-resistant rare earth magnesium alloy ingot blank electromagnetism semi-continuous casting preparation method |
| CN104109826A (en) * | 2014-07-25 | 2014-10-22 | 哈尔滨东安发动机（集团）有限公司 | Thermal treatment method of MgYNdZr alloy |
| CN106119648A (en) * | 2016-08-27 | 2016-11-16 | 冉兴 | Magnesium alloy with high strength and ductility and the manufacture method of component thereof with water generation controllable reaction |
| CN106756370A (en) * | 2016-12-10 | 2017-05-31 | 哈尔滨工业大学 | A kind of anti-flaming Mg Gd Y Zn Zr alloys of high-strength anticorrosion and preparation method thereof |
| CN109930044B (en) * | 2019-03-29 | 2021-07-09 | 江苏中翼汽车新材料科技有限公司 | High-strength-toughness heat-resistant Mg-Gd-Y alloy suitable for gravity casting and preparation method thereof |
| CN109807302B (en) * | 2019-03-29 | 2022-01-11 | 江苏中翼汽车新材料科技有限公司 | High-strength high-toughness heat-resistant die-casting Mg-Gd alloy and preparation method thereof |
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| CN109930045B (en) * | 2019-03-29 | 2021-07-09 | 南京航空航天大学 | High-strength-toughness heat-resistant Mg-Gd alloy suitable for gravity casting and preparation method thereof |
| CN109881064B (en) * | 2019-03-29 | 2021-09-24 | 上海交通大学 | High-strength high-toughness heat-resistant die-casting Mg-Gd-Y alloy and preparation method thereof |
| CN110669972B (en) * | 2019-11-08 | 2021-06-11 | 中国兵器工业第五九研究所 | High-strength corrosion-resistant magnesium alloy and preparation method thereof |
| CN113957308A (en) * | 2021-10-29 | 2022-01-21 | 长春理工大学 | Die-casting magnesium alloy resistant to 200 ℃ ultrahigh pressure creep and preparation method thereof |
| CN115537621B (en) * | 2022-10-08 | 2023-07-14 | 重庆大学 | High-temperature-resistant high-strength Mg-Gd-Y-Zn-Mn alloy and preparation method thereof |
| CN117107094A (en) * | 2023-08-15 | 2023-11-24 | 广东省科学院新材料研究所 | Preparation method of magnesium alloy containing gamma-prime plane precipitated phase |
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| CN100545286C (en) * | 2006-09-29 | 2009-09-30 | 上海交通大学 | High-strength creep resistant magnesium alloy and preparation method thereof |
| CN100436624C (en) * | 2007-06-22 | 2008-11-26 | 西安工业大学 | High-intensity thermal deformation resistant magnesium alloy |
| CN101857933B (en) * | 2009-04-10 | 2012-05-23 | 中国科学院金属研究所 | High-plasticity low-anisotropy magnesium alloy and hot rolling process of plate thereof |
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