CN100387743C - High-strength heat-resisting magnesium alloy and its preparing method - Google Patents

High-strength heat-resisting magnesium alloy and its preparing method Download PDF

Info

Publication number
CN100387743C
CN100387743C CNB2005100252516A CN200510025251A CN100387743C CN 100387743 C CN100387743 C CN 100387743C CN B2005100252516 A CNB2005100252516 A CN B2005100252516A CN 200510025251 A CN200510025251 A CN 200510025251A CN 100387743 C CN100387743 C CN 100387743C
Authority
CN
China
Prior art keywords
alloy
magnesium
strength
minutes
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.)
Active
Application number
CNB2005100252516A
Other languages
Chinese (zh)
Other versions
CN1676646A (en
Inventor
何上明
曾小勤
彭立明
丁文江
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Jiaotong University
Original Assignee
Shanghai Jiaotong University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Jiaotong University filed Critical Shanghai Jiaotong University
Priority to CNB2005100252516A priority Critical patent/CN100387743C/en
Publication of CN1676646A publication Critical patent/CN1676646A/en
Application granted granted Critical
Publication of CN100387743C publication Critical patent/CN100387743C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The present invention relates to a high-strength heat-resisting magnesium alloy and a preparation method thereof. The magnesium alloy comprises the components of the weight percentage: 6 to 15% of Gd, 1 to 6% of Y, 0.35 to 0.8% of Zr, 0 to 1.5% of Ca, impurity elements Si, Fe, Cu and Ni whose total amount is smaller than 0.02%, and Mg as the rest. Gd, Y and Zr are respectively added to a magnesium fused mass in the mode of Mg-Gd, Mg-Y and Mg-Zr master alloys during smelting; after the smelted magnesium alloy is processed by solid solution for 6 to 12 hours at 450 to 500 DEG C, the magnesium alloy is extruded at the temperature of 350 to 450 DEG C. After an extruded rod is processed by time effects for 10 to 16 hours at 225 DEG C, the strength of the extruded rod is further enhanced.

Description

The preparation method of high-strength heat-resisting magnesium alloy
Technical field
The present invention relates to a kind of preparation method of high-strength heat-resisting magnesium alloy, be specifically related to a kind of by adding alloying element (Gd, Y) or change the method that melting, hot-work and process of thermal treatment condition obtain high-strength heat-resisting magnesium alloy, this type of magnesium alloy that makes has mechanical propertys such as the room temperature strength more superior than traditional commerce magnesium alloy, TRANSIENT HIGH TEMPERATURE intensity and hardness.Belong to class of metal materials and field of metallurgy.
Background technology
The not good and erosion resistance of undercapacity, thermotolerance has not seriously hindered the paces of magnesium alloy material such as substitution of Al alloy in aerospace, military project and other industry by force.Rare earth element, especially Y, Nd etc., improving aspect magnesium alloy strength, thermotolerance, the resistance to corrosion effect remarkable, as WE54 and WE43 etc.In nearest 30~40 years, Rokhlin etc. find successively that again some heavy rare earth elements (Gd, Dy, Tb etc.) are in the intensity that improves magnesium alloy, thermotolerance aspect particularly, effect is better than other rare earth element (R.Ciach such as Y, Nd, Advanced Light Alloys and Composites, 1998, the 443-448).In these heavy rare earth elements, the price of Gd is relatively cheap, acts on also comparatively remarkable.
At eutectic temperature, the limit solid solubility of Gd in Mg is 23.5%, and significantly descends with the reduction of temperature, this means that the Mg-Gd binary alloy is that the typical case can be by the magnesium alloy of heat treatment precipitation reinforcement.Rokhlin etc. and Kamado etc. have been found that it is U.S.'s cast aluminium alloy of 332.0 that the hot strength of Mg-20%Gd alloy is better than traditional WE54A heat resistance magnesium alloy and the trade mark; As cast condition Mg-20%Gd tensile strength of alloys and unit elongation are respectively 310MPa and 2% at 250 ℃, its room temperature tensile strength and unit elongation have only 220MPa and less than 0.3% (S.Kamado, S.Iwasawa, K.Ohuchi etc., Journal of JapanInstitute of Light Metals, Vol.42, No.12,1992, the 727-733 pages or leaves).Yet the magnesium alloy cost that merely adds a large amount of heavy rare earth Gds is too high, and density is higher and the room temperature unit elongation is low excessively; Therefore be necessary to add the consumption that other lighter, more cheap alloying element reduces Gd, develop the magnesium alloy that a kind of price is relatively cheap, have higher room temperature and hot strength.
For this reason, Rokhlin etc. use Y instead of part Gd, and add the 0.5Mn thinning microstructure and improve mechanical property, developed the Mg-9.5Gd-4.8Y-0.5Mn alloy, obtained good effect, its tensile strength under hot extrusion (extrusion ratio λ=34.81) T5 state can reach 400~435MPa, but this alloy at room temperature unit elongation is still very low, has only 4% (L.L.Rokhlin, N.I.Nikitina, Magnesium-gadolinium andmagnesium-gadolinium-yttrium alloys, Z.Metallkd., 75 (12), 1994, the 819-823 page or leaf), and its as cast condition room temperature unit elongation is almost nil, is difficult to use.
Kamado etc. use Zr to replace Mn, the one-step optimization alloying constituent of going forward side by side in the Mg-Gd-Y alloy on the basis of people such as Rokhlin work.Because Zr far is better than Mn in the effect of refinement magnesium alloy crystal grain, be expected to further improve the processing performance of this alloy system.The Mg-10Gd-3Y-0.4Zr alloy of designs such as Kamado has obtained higher mechanical property after through the hot rolling system of 80% total reduction and timeliness, and its room temperature tensile strength can reach 460MPa, and unit elongation is less than 0.5%; Its tensile strength is 420MPa in the time of 200 ℃, and unit elongation is 6%; Its tensile strength is 230MPa in the time of 300 ℃, and unit elongation is 9%.(S.Kamado, Y.Kojima:Proc.of 3rd International Magnesium Conference, ed.by G.W.Lorimer, TheInstitute of Materials, London, 1997, the 327~342), Kamado etc. are in that to improve aspect the alloy ductility effect also bad, and tensile strength of alloys descends very fast between 200-300 ℃.They have observed oxide compound or the not existence of dissolved rare earth phase at fracture surface, and think that this is the reason that the alloy room-temperature property worsens.Their melting technology is as follows: melt out the Mg-Gd-Y ternary alloy with the vacuum high-frequency induction under the protection of argon gas earlier, melting and teeming temperature are up to 800 ℃; Be 1: 100 SF again with the Mg-Gd-Y ternary alloy in throughput ratio 6And CO 2Mixed gas protected remelting down adds the Mg-30%Zr crystal grain thinning at 830 ℃, and stirs under this temperature, is incubated and cast.Because adopt dystectic pure rare earth as raw material, the smelting temperature that they adopt when melting Mg-Gd-Y ternary alloy is very high, but lacks dilution step in subsequent handling; And, certainly will increase the weight of the air-breathing consequence of alloy melt oxidation like this for the grain refining effect that guarantees Zr has adopted again up to 830 ℃ of insulations and teeming temperature.In addition, melting and cast under so high temperature, also give very easily the incendiary liquid magnesium alloy has brought great difficulty in extensive melting production protection.
As seen from the above analysis, further optimize alloying constituent and improve alloy smelting process, for the hot strength and unit elongation and the large-scale production and application that continue to improve the Mg-Gd-Y alloy, and to make this be that alloy is directly used significant under as-cast condition.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of preparation method of high-strength heat-resisting magnesium alloy of optimization is provided, by adding alloying element (Gd, Y) or change melting, hot-work and process of thermal treatment condition, obtain high-strength heat-resisting magnesium alloy, make this type of magnesium alloy have mechanical properties such as the room temperature strength more superior, TRANSIENT HIGH TEMPERATURE intensity and hardness than traditional commerce magnesium alloy.
For achieving the above object, technical scheme of the present invention is: adopting Gd is first component, because Gd is 3.82% 200 ℃ of solid solubility in Mg sosoloid, for guaranteeing that alloy obtains good timeliness precipitation strength and solid solution strengthening effect, the add-on of Gd is not less than 6%, too many for avoiding cost of alloy and density to increase, and the undue embrittlement of alloy, the add-on of Gd is not higher than 15%; Adopting Y is second component, Y can reduce the solid solubility of Gd in Mg slightly, thereby increase the timeliness precipitation strength effect of Gd, the adding of Y also helps to increase the fire-retardant and resistance of oxidation of alloy in addition, but add the appearance that too much Y can postpone timeliness hardness peak, cause the timeliness required time to prolong, and intensity is reduced, so the content of Y is controlled at 1-6%; Adopt Zr as grain-refining agent, with toughness that improves alloy and the processing performance of improving alloy.This magnesium alloy can further add yield strength and the hot strength of a spot of Ca with the raising alloy, but adds the unit elongation that too much Ca can seriously reduce alloy, so the content of Ca is controlled at 0~1.5%.
In sum, a kind of high-strength heat-resistant magnesium alloy provided by the present invention, its component and weight percent thereof are: 6~15%Gd, 1~6%Y, 0.35~0.8%Zr, 0~1.5%Ca, the total amount of impurity element: Si, Fe, Cu and Ni is less than 0.02%, and surplus is Mg.
High-strength heat-resistant magnesium alloy preparation method provided by the invention comprises melting technology and thermal treatment process:
The melting technology of Mg-Gd-Y-Ca-Zr alloy is: earlier pure magnesium, master alloy Mg-Gd, Mg-Y and Mg-Zr are preheating to 180 ℃~220 ℃, then pure magnesium have been put into SF 6/ CO 2The melt in furnace of gas shield; treat that magnesium ingot has just melted the back at 670~690 ℃ of pure Ca that add 0~1.5wt%; after the magnesium liquid temp reaches 720~740 ℃; the Mg-Gd master alloy of 20~50wt% is directly joined in the magnesium liquid; Mg-Gd fusing back magnesium liquid temp adds the Mg-Y master alloy of 3.4~20wt% again when ging up to 720~740 ℃; the magnesium liquid temp is risen to the Mg-Zr master alloy that adds 1.2~2.7wt% after 760~780 ℃; treat to skim surface scum after its fusing; stirred 2~3 minutes; again the magnesium liquid temp is risen to 780~800 ℃ of insulations and be cooled to 750~755 ℃ after 20~30 minutes; constantly electrorefining is 6~10 minutes; time of repose after the refining was controlled between 25~40 minutes; treat that skimming surface scum after magnesium liquid is cooled to 690~720 ℃ casts, cast is heated to 200~250 ℃ in advance with steel die.
The concrete thermal treatment process of the present invention is:
The solid solution temperature of Mg-Gd-Y-Ca-Zr alloy is 450~500 ℃, 6~12 hours.The Mg-Gd-Y-Ca-Zr alloy that pushes carries out 0.5~2 hour preheating 350~450 ℃ temperature, pushes afterwards.Then the hot extrude pressure bar is carried out 225 ℃ * 10~16 hours ageing treatment.
Substantive distinguishing features that the present invention had and obvious improvement are:
(1) adopts Mg-Gd and Mg-Y master alloy to add Gd and Y element indirectly, can bring more inclusion in enough pure Mg ingot dilution master alloy fusion process, and significantly reduce the smelting temperature of alloy and reduce the residence time of alloy under comparatively high temps; During with the Zr crystal grain thinning, accomplished to try one's best and reduced, and stirred refining at a lower temperature, successfully realized under the lower normal pouring temperature of magnesium alloy, pouring into a mould, and do not reduced the thinning effect of crystal grain in the residence time of high temperature section; This has not only reduced the The amount of inclusions of alloy after the melting effectively, and the difficulty of protecting when having reduced melting effectively, and making this is that the suitability for industrialized production of alloy becomes a reality.
(2) adopt above melting technology under the situation that keeps original intensity, improved the unit elongation of casting Mg-Gd-Y-Zr alloy effectively, it is more real to make this alloy be directly used in as-cast condition.
(3) adopt above melting technology to realize continuing to increase room temperature and the high temperature instantaneous stretching intensity that alloying element content improves alloy extruding T5 attitude.The high temperature instantaneous stretching intensity and the room temperature yield strength of Mg-Gd-Y-Zr alloy have further been improved by interpolation Ca element.
(4) the Mg-Gd-Y-Ca-Zr alloy is along with the raising of Gd, y alloy constituent content, tensile strength and yield strength raise, unit elongation reduces, after overaging, the rangeability of its room temperature tensile strength and unit elongation is respectively 230~450MPa according to heterogeneity and technology, unit elongation is from 1~24%, and strength degradation is not obvious under 250 ℃ temperature, thereby can satisfy the alloy that various application occasions requires by regulating Gd, Y, Ca content and technological design.
Embodiment
Below by specific embodiment technical scheme of the present invention is described in detail.
Embodiment 1
Earlier pure magnesium, master alloy Mg-Gd, Mg-Y and Mg-Zr are preheating to 180 ℃, then pure magnesium have been put into SF 6/ CO 2The melt in furnace of gas shield; after the magnesium liquid temp reaches 720 ℃; the Mg-Gd master alloy of 20wt% is directly joined in the magnesium liquid; Mg-Gd fusing back magnesium liquid temp adds the Mg-Y master alloy of 3.4wt% again when ging up to 720 ℃; the magnesium liquid temp is risen to the Mg-Zr master alloy that adds 1.2wt% after 760 ℃; treat to skim surface scum after its fusing; stirred 2 minutes; again the magnesium liquid temp is risen to 780 ℃ of insulations and be cooled to 750 ℃ after 20 minutes; constantly electrorefining is 6 minutes; time of repose after the refining was controlled at 25 minutes, treated that skimming surface scum after magnesium liquid is cooled to 690 ℃ casts.Cast is heated to 200 ℃ in advance with steel die.
The solid solution temperature of Mg-Gd-Y-Zr alloy is 450 ℃, 6 hours.The Mg-Gd-Y-Zr alloy that pushes carries out 0.5 hour preheating 350 ℃ temperature, pushes afterwards.Then the hot extrude pressure bar is carried out 225 ℃ * 10 hours ageing treatment.Obtain high-strength temperature-resistant Mg-Gd-Y-Zr alloy at last.
The room-temperature mechanical property of high-strength temperature-resistant Mg-Gd-Y-Zr alloy casting state is:
Tensile strength: 220MPa, yield strength: 120MPa, unit elongation: 15%.
The mechanical property of high-strength temperature-resistant Mg-Gd-Y-Zr alloy extruding T5 attitude is:
Room temperature: tensile strength: 369MPa, yield strength: 288MPa, unit elongation: 20.5%.
200 ℃: tensile strength: 305MPa, yield strength: 220MPa, unit elongation: 54.6%.
300 ℃: tensile strength: 175MPa, yield strength: 132MPa, unit elongation: 154.8%.
Embodiment 2
Earlier pure magnesium, master alloy Mg-Gd, Mg-Y and Mg-Zr are preheating to 200 ℃, then pure magnesium have been put into SF 6/ CO 2The melt in furnace of gas shield; after the magnesium liquid temp reaches 730 ℃; the Mg-Gd master alloy of 34wt% is directly joined in the magnesium liquid; Mg-Gd fusing back magnesium liquid temp adds the Mg-Y master alloy of 10wt% again when ging up to 730 ℃; the magnesium liquid temp is risen to the Mg-Zr master alloy that adds 2wt% after 770 ℃; treat to skim surface scum after its fusing; stirred 2.5 minutes; again the magnesium liquid temp is risen to 790 ℃ of insulations and be cooled to 753 ℃ after 25 minutes; constantly electrorefining is 8 minutes; time of repose after the refining was controlled at 30 minutes, treated that skimming surface scum after magnesium liquid is cooled to 705 ℃ casts.Cast is heated to 225 ℃ in advance with steel die.
The solution treatment system of Mg-Gd-Y-Zr alloy is 475 ℃, 9 hours.The Mg-Gd-Y-Zr alloy that pushes carries out 1 hour preheating 400 ℃ temperature, pushes afterwards.Then the hot extrude pressure bar is carried out 225 ℃ * 13 hours ageing treatment.Obtain high-strength temperature-resistant Mg-Gd-Y-Zr alloy at last.
The room-temperature mechanical property of high-strength temperature-resistant Mg-Gd-Y-Zr alloy casting state is:
Tensile strength: 370MPa, yield strength: 239MPa, unit elongation: 4.0%.
The mechanical property of high-strength temperature-resistant Mg-Gd-Y-Zr alloy extruding T5 attitude is:
Room temperature: tensile strength: 403MPa, yield strength: 311MPa, unit elongation: 15.3%.
200 ℃: tensile strength: 367MPa, yield strength: 286MPa, unit elongation: 16.1%.
300 ℃: tensile strength: 191MPa, yield strength: 153MPa, unit elongation: 145.4%.
Embodiment 3
Earlier pure magnesium, master alloy Mg-Gd, Mg-Y and Mg-Zr are preheating to 220 ℃, then pure magnesium have been put into SF 6/ CO 2The melt in furnace of gas shield; after the magnesium liquid temp reaches 740 ℃; the Mg-Gd master alloy of 50wt% is directly joined in the magnesium liquid; Mg-Gd fusing back magnesium liquid temp adds the Mg-Y master alloy of 20wt% again when ging up to 740 ℃; the magnesium liquid temp is risen to the Mg-Zr master alloy that adds 2.7wt% after 780 ℃; treat to skim surface scum after its fusing; stirred 3 minutes; again the magnesium liquid temp is risen to 800 ℃ of insulations and be cooled to 755 ℃ after 30 minutes; constantly electrorefining is 10 minutes; time of repose after the refining was controlled at 40 minutes, treated that skimming surface scum after magnesium liquid is cooled to 720 ℃ casts.Cast is heated to 250 ℃ in advance with steel die.
The solution treatment system of Mg-Gd-Y-Zr alloy is 500 ℃, 11 hours.The Mg-Gd-Y-Zr alloy that pushes carries out 2 hours preheating 450 ℃ temperature, pushes afterwards.Then the hot extrude pressure bar is carried out 225 ℃ * 16 hours ageing treatment.Obtain high-strength temperature-resistant Mg-Gd-Y-Zr alloy at last.
The room-temperature mechanical property of high-strength temperature-resistant Mg-Gd-Y-Zr alloy casting state is:
Tensile strength: 328MPa, yield strength: 246MPa, unit elongation: 1.1%.
The mechanical property of high-strength temperature-resistant Mg-Gd-Y-Zr alloy extruding T5 attitude is:
Room temperature: tensile strength: 459MPa, yield strength: 360MPa, unit elongation: 5.1%.
200 ℃: tensile strength: 410MPa, yield strength: 320MPa, unit elongation: 5.7%.
300 ℃: tensile strength: 253MPa, yield strength: 208MPa, unit elongation: 38.4%.
Embodiment 4
Earlier pure magnesium, master alloy Mg-Gd, Mg-Y and Mg-Zr are preheating to 200 ℃, then pure magnesium have been put into SF 6/ CO 2The melt in furnace of gas shield; treat that magnesium ingot has just melted the back at 680 ℃ of pure Ca that add 1wt%; after the magnesium liquid temp reaches 730 ℃; the Mg-Gd master alloy of 34wt% is directly joined in the magnesium liquid; Mg-Gd fusing back magnesium liquid temp adds the Mg-Y master alloy of 10wt% again when ging up to 730 ℃; the magnesium liquid temp is risen to the Mg-Zr master alloy that adds 2wt% after 770 ℃; treat to skim surface scum after its fusing; stirred 2.5 minutes; again the magnesium liquid temp is risen to 790 ℃ of insulations and be cooled to 753 ℃ after 25 minutes; constantly electrorefining is 8 minutes, and the time of repose after the refining was controlled at 30 minutes, treated that skimming surface scum after magnesium liquid is cooled to 705 ℃ casts.Cast is heated to 225 ℃ in advance with steel die.
The solution treatment system of Mg-Gd-Y-Ca-Zr alloy is 475 ℃, 9 hours.The Mg-Gd-Y-Ca-Zr alloy that pushes carries out 1 hour preheating 400 ℃ temperature, pushes afterwards.Then the hot extrude pressure bar is carried out 225 ℃ * 13 hours ageing treatment.Obtain high-strength temperature-resistant Mg-Gd-Y-Ca-Zr alloy at last.
The room-temperature mechanical property of high-strength temperature-resistant Mg-Gd-Y-Ca-Zr alloy casting state is:
Tensile strength: 368MPa, yield strength: 246MPa, unit elongation: 2.8%.
The mechanical property of high-strength temperature-resistant Mg-Gd-Y-Ca-Zr alloy extruding T5 attitude is:
Room temperature: tensile strength: 449MPa, yield strength: 371MPa, unit elongation: 14.1%.
200 ℃: tensile strength: 360MPa, yield strength: 292MPa, unit elongation: 15.0%.
300 ℃: tensile strength: 190MPa, yield strength: 165MPa, unit elongation: 98%.

Claims (3)

1. the preparation method of a high-strength heat-resisting magnesium alloy is characterized in that getting feed composition and is: the Mg-Gd of 20~50wt%, and the Mg-Y of 3.4~20wt%, the Mg-Zr of 1.2~2.7wt%, the pure Ca of 0~1.5wt%, all the other are pure magnesium; Earlier pure magnesium, master alloy Mg-Gd, Mg-Y and Mg-Zr are preheating to 180~220 ℃, then pure magnesium have been put into SF 6/ CO 2The melt in furnace of gas shield, treat that magnesium ingot has just melted the back and added pure Ca at 670~690 ℃, after the magnesium liquid temp reaches 720~740 ℃, Mg-Gd is directly joined in the magnesium liquid, Mg-Gd fusing back magnesium liquid temp adds Mg-Y again when ging up to 720~740 ℃, add Mg-Zr after the magnesium liquid temp risen to 760~780 ℃, treat to skim surface scum after its fusing, stirred 2~3 minutes, again the magnesium liquid temp is risen to 780~800 ℃ of insulations and be cooled to 750~755 ℃ after 20~30 minutes, constantly electrorefining is 6~10 minutes, time of repose after the refining was controlled between 25~40 minutes, treat that skimming surface scum after magnesium liquid is cooled to 690~720 ℃ casts, cast is heated to 200~250 ℃ in advance with steel die, obtains Mg-Gd-Y-Ca-Zr alloy or Mg-Gd-Y-Zr alloy; The weight percent of resulting alloy compositions is: 6~15%Gd, 1~6%Y, 0.35~0.8%Zr, and 0~1.5%Ca, the total amount of impurity element Si, Fe, Cu and Ni is less than 0.02%, and surplus is Mg.
2. according to the preparation method of the high-strength heat-resisting magnesium alloy of claim 1, it is characterized in that Mg-Gd-Y-Ca-Zr alloy or the Mg-Gd-Y-Zr alloy that will obtain carry out 450~500 ℃, 6~12 hours solution treatment.
3. according to the preparation method of the high-strength heat-resisting magnesium alloy of claim 2, it is characterized in that and to push under 350~450 ℃ temperature through Mg-Gd-Y-Ca-Zr alloy after the solution treatment or Mg-Gd-Y-Zr alloy, then to pushing the ageing treatment that rod carried out 225 ℃ * 10~16 hours.
CNB2005100252516A 2005-04-21 2005-04-21 High-strength heat-resisting magnesium alloy and its preparing method Active CN100387743C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2005100252516A CN100387743C (en) 2005-04-21 2005-04-21 High-strength heat-resisting magnesium alloy and its preparing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2005100252516A CN100387743C (en) 2005-04-21 2005-04-21 High-strength heat-resisting magnesium alloy and its preparing method

Publications (2)

Publication Number Publication Date
CN1676646A CN1676646A (en) 2005-10-05
CN100387743C true CN100387743C (en) 2008-05-14

Family

ID=35049394

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2005100252516A Active CN100387743C (en) 2005-04-21 2005-04-21 High-strength heat-resisting magnesium alloy and its preparing method

Country Status (1)

Country Link
CN (1) CN100387743C (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100449021C (en) * 2005-12-13 2009-01-07 北京有色金属研究总院 High-toughness and heat-resisting magnesium-alloy and its melting method
CN100383271C (en) * 2006-01-23 2008-04-23 中南大学 High-strength heat-resistant rare earth magnesium alloy
GB0617970D0 (en) * 2006-09-13 2006-10-18 Magnesium Elektron Ltd Magnesium gadolinium alloys
CN101191168B (en) * 2006-11-23 2011-03-30 北京有色金属研究总院 Magnesium alloy and preparation method thereof
CN100463991C (en) * 2007-07-17 2009-02-25 太原理工大学 High-strength magnesium alloy and preparation method thereof
CN101397623B (en) * 2008-11-06 2010-06-16 上海交通大学 Copper-containing heat resisting rare-earth magnesium alloy and preparation method thereof
CN101532106B (en) * 2009-04-13 2010-12-08 河南科技大学 Heat resisting casting rare earth magnesium alloy and preparation method thereof
CN101905251A (en) * 2010-07-07 2010-12-08 中南大学 Extrusion deforming process of high-strength large-diameter magnesium alloy rod
CN102383012B (en) * 2011-11-01 2013-06-05 西安理工大学 Low-rare-earth high-strength heat-resisting magnesium alloy and preparation method thereof
CN102899515B (en) * 2012-09-13 2014-04-16 太原理工大学 Preparation method for alkaline earth heatproof magnesium alloy
CN103820689B (en) * 2012-11-19 2016-01-20 北京有色金属研究总院 Be high-strength heat-resistant magnesium alloy and the preparation working method thereof of rare earth containing two
CN103388095B (en) * 2013-07-18 2016-10-26 上海交通大学 Mg-Gd-Y-Zr series magnesium alloy and the heat treatment method of large-scaled complex castings thereof
CN104070621A (en) * 2014-05-05 2014-10-01 上海治实合金科技有限公司 Mold for manufacturing rubber product
CN104313440B (en) * 2014-09-28 2017-01-25 上海轻合金精密成型国家工程研究中心有限公司 High-performance magnesium alloy tube for automobile bumper bars and manufacturing method thereof
CN104451484A (en) * 2014-11-28 2015-03-25 沈阳工业大学 Thermo-mechanical treatment strengthening technology of magnesium alloy sheet
CN104498797A (en) * 2014-12-31 2015-04-08 上海交通大学 High-strength casting magnesium alloy with low hot cracking tendency and preparation method for high-strength casting magnesium alloy
CN105200293A (en) * 2015-10-27 2015-12-30 上海航天精密机械研究所 High-performance heatproof cast magnesium alloy and casting method for sand casting prepared from cast magnesium alloy
CN106000700A (en) * 2016-05-30 2016-10-12 上海治实合金科技有限公司 Static rotary cup shell for automatic automobile spraying production line
CN106834852B (en) * 2017-02-15 2018-09-14 苏州慧金新材料科技有限公司 A kind of high strength anti-corrosion magnesium alloy
CN107043881B (en) * 2017-05-09 2018-06-29 郑州轻工业学院 A kind of magnesium-based composite material containing long-periodic structure of graphene enhancing and preparation method thereof
CN107142403B (en) * 2017-05-09 2018-06-29 郑州轻工业学院 A kind of magnesium-based composite material of graphene and quasi-crystalline substance complex intensifying and preparation method thereof
CN106967915B (en) * 2017-06-02 2019-03-12 哈尔滨工业大学 A kind of readily soluble Mg-Y-Ni-Zr-Ca magnesium alloy of super high-strength and high-modulus and preparation method thereof
CN107723548A (en) * 2017-11-16 2018-02-23 上海电力学院 A kind of high intensity Mg Y Ni Zr alloys and preparation method thereof
CN110195178B (en) * 2018-02-26 2021-10-22 中国宝武钢铁集团有限公司 High-strength high-plasticity heat-resistant flame-retardant magnesium alloy and manufacturing method thereof
CN109023175A (en) * 2018-10-08 2018-12-18 吉林大学 The heat treatment process of magnesium-rare earth
CN109666832A (en) * 2019-02-22 2019-04-23 中国科学院长春应用化学研究所 High-intensity thermal deformation resistant magnesium alloy and preparation method thereof
CN110229984B (en) * 2019-06-20 2020-08-04 上海交通大学 High-strength Mg-Gd-Er-Y magnesium alloy and preparation method thereof
CN110923595B (en) * 2019-11-22 2020-12-29 中国兵器工业第五九研究所 Aging strengthening and toughening method for high-strength magnesium alloy
CN113684408A (en) * 2021-08-30 2021-11-23 重庆镁能新材料技术合伙企业(普通合伙) High-strength and high-toughness cast magnesium alloy and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0649579A (en) * 1992-07-01 1994-02-22 Mitsui Mining & Smelting Co Ltd Gadolinium-containing high-strength magnesium alloy
JPH10147830A (en) * 1996-11-15 1998-06-02 Tokyo Seitankoushiyo:Kk Yttrium-containing magnesium alloy
CN1464913A (en) * 2001-08-13 2003-12-31 本田技研工业株式会社 Magnesium alloy
CN1587430A (en) * 2004-08-12 2005-03-02 上海交通大学 Deformed magnesium alloy and its casting and deforming processing process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0649579A (en) * 1992-07-01 1994-02-22 Mitsui Mining & Smelting Co Ltd Gadolinium-containing high-strength magnesium alloy
JPH10147830A (en) * 1996-11-15 1998-06-02 Tokyo Seitankoushiyo:Kk Yttrium-containing magnesium alloy
CN1464913A (en) * 2001-08-13 2003-12-31 本田技研工业株式会社 Magnesium alloy
CN1587430A (en) * 2004-08-12 2005-03-02 上海交通大学 Deformed magnesium alloy and its casting and deforming processing process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
发动机零件用稀土合金. 杨遇春.稀土金属,第Z1期. 1997 *

Also Published As

Publication number Publication date
CN1676646A (en) 2005-10-05

Similar Documents

Publication Publication Date Title
CN100387743C (en) High-strength heat-resisting magnesium alloy and its preparing method
CA2738973C (en) Magnesium alloys containing rare earths
KR100192936B1 (en) Ultra high strength aluminum-base alloys
US8728256B2 (en) Multi-element heat-resistant aluminum alloy material with high strength and preparation method thereof
CN101760683B (en) High-strength casting magnesium alloy and melting method thereof
US20200102631A1 (en) Mg-gd-y-zn-zr alloy and process for preparing the same
CN102978463A (en) Al-Fe-Tl-RE aluminum alloy, and preparation method and power cable thereof
CN105177369A (en) High-strength pressure cast rare earth aluminum alloy and preparing method thereof
CN101003875A (en) Weldable deformable rare earth magnesium alloy with high intensity and high toughness
CN103014443B (en) A kind of rare earth aluminium alloy and preparation method thereof
CN103045913A (en) Al-Fe-Ir-RE aluminum alloy, preparation method thereof and power cable
CN101037753A (en) High-strength heat-proof compression casting magnesium alloy and preparation method thereof
CN107447150B (en) A kind of corrosion resistance structure aluminium alloy and preparation method
CN109881062B (en) High-strength, high-toughness and high-modulus extrusion casting magnesium alloy and preparation method thereof
CN109837438B (en) Low-cost high-strength wrought magnesium alloy and preparation method thereof
CN1814837A (en) High-strength heat-resisting magnesium alloy and preparing method
CN101906554A (en) Mg-containing high-strength deforming zinc-copper alloy and preparation method thereof
EP1339888B1 (en) High strength magnesium alloy
CN104498797A (en) High-strength casting magnesium alloy with low hot cracking tendency and preparation method for high-strength casting magnesium alloy
CN1962914A (en) Cast magnesium alloy containing rare-earth and preparation method thereof
CN105177384A (en) Mg-RE-Zr system multielement magnesium alloy and preparation method thereof
CN101871066A (en) High-obdurability magnesium alloy comprising tin and zinc and preparation method thereof
CN102079019A (en) Multi-element compounded micro-alloyed Al-Mg-Sc series welding wire and preparation method thereof
EP1882754B1 (en) Aluminium alloy
CN109852859B (en) High-strength-toughness heat-resistant Mg-Y-Er alloy suitable for gravity casting and preparation method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant