CN102409208A - Sr-containing heat-resisting casting magnesium alloy - Google Patents

Sr-containing heat-resisting casting magnesium alloy Download PDF

Info

Publication number
CN102409208A
CN102409208A CN2011103796476A CN201110379647A CN102409208A CN 102409208 A CN102409208 A CN 102409208A CN 2011103796476 A CN2011103796476 A CN 2011103796476A CN 201110379647 A CN201110379647 A CN 201110379647A CN 102409208 A CN102409208 A CN 102409208A
Authority
CN
China
Prior art keywords
alloy
magnesium alloy
under
pure
elongation
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.)
Pending
Application number
CN2011103796476A
Other languages
Chinese (zh)
Inventor
邱克强
尤俊华
任英磊
李庆丰
郝帅
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.)
Shenyang University of Technology
Original Assignee
Shenyang University of Technology
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 Shenyang University of Technology filed Critical Shenyang University of Technology
Priority to CN2011103796476A priority Critical patent/CN102409208A/en
Publication of CN102409208A publication Critical patent/CN102409208A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Continuous Casting (AREA)
  • Conductive Materials (AREA)

Abstract

The invention discloses a Sr-containing heat-resisting casting magnesium alloy. The magnesium alloy is characterized by comprising the following components in percentage by mass: 3.5 to 5.5 percent of Sn, 1 to 3 percent of Si, 0.5 to 3 percent of Sr and the balance of Mg and impurities. Sn and Si elements are added in a combination manner to generate Mg2Sn and Mg2Si high-temperature strengthening phases; a Sr element is added to refine the Mg2Si phase; simultaneously, a thermal stabilization phase MgSnSr of which the heat resistance is higher than that of Mg2Sn is formed. Compared with the conventional heat-resisting casting magnesium alloy, the Sr-containing heat-resisting casting magnesium alloy has excellent room temperature and high-temperature performance and low production cost, and can be widely applied to production of automobiles, electronics and space flight and aviation parts.

Description

A kind of Sr heat resistance casting magnesium alloy that contains
Technical field
The invention belongs to the magnesium alloy materials technical field, be specifically related to a kind of Sr of containing heat resistance casting magnesium alloy.
Background technology
Magnesiumalloy is the lightest structural metallic materials in the present practical application, and it is little by (1.75～1.85 * 10 to have proportion 3Kg/m 3Be about 64% of aluminium; Steel 23%), high, the damping and amortization of specific tenacity and specific rigidity and machinability is good, ballistic work absorbs big; And advantage such as easy to be recycled, obtain increasingly extensive application in fields such as automobile, aerospace, electronics, be considered to a kind of ideal material that effectively alleviates quality, save energy, environmental friendliness, helps Sustainable development.But the intensity of magnesiumalloy is not high, and resistance toheat is poor, has limited its range of application.Because intensity is low, the magnesiumalloy component that are used for field such as automobile have to increase wall thickness, therefore improve the intensity and the thermotolerance of magnesiumalloy, make it have good comprehensive performances, are the novel magnesium alloy hot of research and development.
In the alloying research of high-strength magnesium alloy, the interpolation of alloying element mainly concentrates on aluminium, zinc, silicon, strontium, copper, nickel, manganese, zirconium, calcium, lithium and bismuth, or scandium, yttrium and REE.Its strengthening mechanism mainly is solution strengthening or forms intermetallic compound with magnesium and strengthen.At present high-strength heat-resisting magnesium alloy mainly is the alloy of high rare-earth content because the price of rare earth is higher abroad, except that aerospace is used, in general industry, as automobile enterprise adopt few.Though China is rare earth big country, to compare with other alloying element, the rare earth price still is higher.Many investigators of China often bias toward the research of magnesium-rare earth, and the content of rare earth in some achievements in research or scandium, yttrium causes the price of magnesiumalloy high up to more than 10%, has limited it and has applied.Therefore, the exploitation of current high-strength heat-resistant magnesium alloy should take into account and improve performance and reduce cost two aspect factors.Si and Sn are the beneficial elements that improves the magnesiumalloy resistance toheat, and cheap, the Mg that they and reactive magnesium generate 2Si and Mg 2Sn has high melt point and hardness mutually, is not only the strengthening phase in the alloy, and can improves the high-temperature behavior of magnesiumalloy.Research shows that as cast condition Mg-5wt%Sn alloy has better comprehensive mechanical property, and the adding of silicon can form Mg 2Si strengthening phase, but the Mg of thick Chinese character shape and dendroid form 2Si is on good terms and reduces the alloy at room temperature performance, if can refinement Mg 2The Si phase is with the mechanical property that further improves alloy.Existing research shows that adding rare-earth elements La, Y, Nd, Ce etc. can refinement Mg 2The Si phase improve alloy at room temperature and hot strength, but rare earth costs an arm and a leg, and the magnesiumalloy of being researched and developed does not have market competitiveness.Adding alkaline earth element Sr or Ca equally can refinement Mg 2The Si phase improves the high-temperature behavior of alloy, compares with rare earth, and alkaline earth element cheap, the Mg-Si heat resistance magnesium alloy that therefore contains alkaline earth element is one of developing direction from now on.
Nearest disclosed Mg-Sn-Si-La (publication number 101948975) heat resistance magnesium alloy patent is through adding rare-earth elements La refinement Mg 2The Si phase generates new intermetallic compound La simultaneously 5Si 4Phase, though improved the resistance toheat of alloy, rare-earth elements La is a kind of strategic resource, cost an arm and a leg (250 yuan/kg).
The present invention intends and discloses a kind of Mg-Sn-Si-Sr is heat resistance magnesium alloy, cheap through adding, and (40 yuan/kg) alkaline earth element Sr comes refinement Mg 2The Si phase forms a kind of resistance toheat simultaneously and is superior to Mg in alloy 2The thermally-stabilised phase MgSnSr of Sn, the resistance toheat of raising alloy.The Sr Mg that goes bad 2Si phase reason is following: from the thermodynamics angle, Sr has increased the condensate depression of alloy liquid, makes Mg 2Si phase crystallization nuclei increases, refinement crystal grain; From the kinetics angle, the solid solubility of Sr in magnesium is low, and unnecessary Sr is enriched in Mg 2The growth interface forward position of Si phase makes Mg 2Si grows mutually and is restricted.Mg-Sn-Si-Sr is the Mg in the alloy 2Si, Mg 2Sn all has thermostability preferably mutually with MgSnSr, so the alloy of final preparation has good heat-resistant.
Summary of the invention
The present invention provides a kind of Sr of containing heat resistance casting magnesium alloy; Its objective is the deficiency that overcomes prior art, prepare that cost is low, the heat resistance casting magnesium alloy of tensile strength>=130MPa, elongation>=10% during room temperature tensile strength>=200MPa, elongation>=4.5%, 200 ° C; This alloy is at 200 ° of C; 75MPa, under the 100h condition, compressive creep amount≤0.05%.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of Sr heat resistance casting magnesium alloy that contains is characterized in that: the component of said alloy and mass percent are Sn:3.5%～5.5%, Si:1%～3%, and Sr:0.5%～3%, surplus is Mg and unavoidable impurities.
Impurity element and mass percent are Fe≤0.005%, Cu≤0.015%, Ni≤0.002%.
Room temperature tensile strength >=the 200MPa of magnesiumalloy, elongation >=4.5%.
Under 200 ° of C conditions, the tensile strength >=130MPa of magnesiumalloy, elongation >=10%.
200 ° of C, 75MPa, under the 100h condition, compressive creep amount≤0.05% of alloy.
The present invention generates Mg with the Mg reaction respectively through adding cheap Si element and Sn element 2Si and Mg 2Sn High-Temperature Strengthening phase improves the resistance toheat of alloy, reduces the cost of magnesiumalloy.
The present invention changes Mg through adding cheap alkaline earth element Sr 2The form of Si phase and with its refinement generates thermally-stabilised phase MgSnSr simultaneously, has improved the high-temperature behavior of alloy, reduces the cost of magnesiumalloy.
The present invention preparation contain Sr heat resistance casting magnesium alloy, its room temperature tensile strength >=200Mpa, elongation >=4.5%.During 200 ° of C, tensile strength >=130MPa, elongation >=10%.At 200 ° of C, 75MPa, under the 100h condition, compressive creep amount≤0.05% of alloy.Compare with existing heat resistance casting magnesium alloy, alloy of the present invention has good room temperature and high-temperature behavior, and production cost is low, can be widely used in the production with component of automobile, electronics and space flight and aviation.
Description of drawings:
Fig. 1 is for adopting the stretching sample size of line cutting preparation;
Fig. 2 is the optical texture photo of Mg-5Sn-2Si-0.5Sr alloy;
Fig. 3 is the optical texture photo of Mg-5Sn-2Si-2Sr alloy;
Fig. 4 is the SEM photo of Mg-5Sn-2Si-0.5Sr alloy;
Fig. 5 is the SEM photo of Mg-5Sn-2Si-2Sr alloy.
Embodiment:
The present invention discloses a kind of Sr of containing heat resistance casting magnesium alloy, and good room temperature and high-temperature behavior are arranged, and production cost is low, can be widely used in the production with component of automobile, electronics and space flight and aviation.
The component of said alloy and mass percent are Sn:3.5%～5.5%, Si:1%～3%, and Sr:0.5%～3%, surplus is Mg and impurity, foreign matter content and mass percent are Fe≤0.005%, Cu≤0.015%, Ni≤0.002%.
The characteristics of above-mentioned magnesiumalloy are:
(1) room temperature tensile strength >=200MPa, elongation >=4.5%;
Under (2) 200 ° of C conditions, the tensile strength >=130MPa of magnesiumalloy, elongation >=10%;
(3) 200 ° of C, 75MPa, under the 100h condition, compressive creep amount≤0.05% of alloy.
The present invention adds Sn and the Si element with strengthening effect through uniting, and makes they and Mg form Mg 2Sn and Mg 2Si comes compound reinforced magnesium alloy mutually.Intermetallic compound Mg 2The Sn phase have high melt point (770 ℃) and a higher hardness (119HV), and Mg 2Si has higher fusing point (1085 ℃) and higher hardness (460HV) mutually, and they all belong to the hard phase, so Mg 2Sn and Mg 2Si is strengthening phase very useful in the alloy mutually, can improve the tensile property and the creep property of magnesiumalloy.The purpose of adding the Sr element is the Mg on the refinement crystal boundary 2The Si phase, tiny Mg on this crystal boundary 2Si can hinder crystal boundary slippage and dislocation motion mutually, effectively improves tensile strength of alloys and unit elongation; Adding the Sr element simultaneously also can form a kind of resistance toheat and be superior to Mg in alloy 2The thermally-stabilised phase MgSnSr of Sn has improved the resistance toheat of alloy; Sr is as surface active element in addition, and Sr can be enriched in solid-liquid edge in front when solidifying, and the dendrite interval in the alloy is diminished, and has the effect of crystal grain thinning, thereby further improves the performance of alloy.
Early-stage Study result of the present invention shows: for Mg-Sn-Si-Sr is alloy, when Sn content between 3.5%～5.5% the time, tensile strength of alloys and elongation are all improving with the increase of Sn content; Continue to improve Sn content, brittle Mg 2Many and the alligatoring of Sn granule number quantitative change causes weakening of its highly malleablized effect, and alloy property reduces.When Si content between 1%～3% the time, the Si element of adding has formed Mg on crystal boundary 2The Si phase has improved the intensity of alloy; But, formed Chinese character shape Mg in the alloy when Si content surpasses 3% 2The Si phase, under the effect of tensile stress, the crackle of formation is along Chinese character shape Mg 2Expansion at the interface between Si and α-Mg matrix causes the mechanical properties decrease of alloy.When Sr content between 0.5%～3% the time, the Sr element of adding is Mg on the refinement crystal boundary significantly 2The Si phase like Fig. 2-shown in Figure 5, thereby is further put forward the performance of alloy; Yet Sr content surpasses at 3% o'clock, and the size of ternary MgSnSr phase increases, and matrix is produced isolate effect, makes the alloy plastic deformation inhomogeneous simultaneously, produces stress concentration, becomes formation of crack, thus the performance of deterioration alloy.
The above-mentioned Sr heat resistance casting magnesium alloy that contains prepares through following step:
(1) batching: raw material is that purity is 99.9% pure Mg, 99.9% pure Sn, and Mg-30%Si and Mg-30%Sr master alloy, and the mass percent of each element is Sn:3.5%～5.5%; Si:1%～3%; Sr:0.5%～3%, foreign matter content Fe≤0.005%, Cu≤0.015%; Ni≤0.002%, surplus are Mg;
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, and at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 700 ℃～720 ℃, obtains liquid metal;
(3) casting: with molten metal liquid 670 ℃～690 ℃ cast;
(4) thermal treatment: with step (3) products therefrom under 480 ℃～520 ℃, solid solution 8～24 hours, under 200 ℃～240 ℃, timeliness 6～24 hours obtains containing the Sr heat resistance casting magnesium alloy then.
Batching in the step (1), in order to reduce smelting temperature, HMP elements Si and Sr add with Mg-30%Si and Mg-30%Sr master alloy respectively.
Casting in the step (3), under normal casting technique, model adopts metal mold or sand mold.
Describe the present invention below in conjunction with specific embodiment, need to prove, protection scope of the present invention is not limited in following embodiment.。
Embodiment 1:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:3.5%, Si:1%, Sr:0.5%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:3.5%, Si:1%, Sr:0.5%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 700 ℃, obtains liquid metal.
(3) casting: 680 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 490 ℃, solid solution 8 hours, then under 210 ℃, timeliness 18 hours.
The room temperature tensile strength of the Mg-3.5Sn-1Si-0.5Sr magnesiumalloy that obtains is 205MPa, and elongation is 4.5%; In the time of 200 ℃, tensile strength is 131MPa, and elongation is 10.8%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.02%.
Stretching samples using line cutting sampling, sample size is as shown in Figure 1, L1=40, L2=20, L3=12, L4=3, R1=4.5, φ 1=φ 2=3.
Embodiment 2:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:4%, Si:1%, Sr:2%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:4%, Si:1%, Sr:2%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 700 ℃, obtains liquid metal.
(3) casting: 680 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 520 ℃, solid solution 18 hours, then under 200 ℃, timeliness 12 hours.
The room temperature tensile strength of the Mg-4Sn-1Si-2Sr magnesiumalloy that obtains is 230MPa, and elongation is 5%; During 200 ° of C, tensile strength is 146MPa, and elongation is 13%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.03%.
Embodiment 3:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:4%, Si:2%, Sr:0.5%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:4%, Si:2%, Sr:0.5%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 700 ℃, obtains liquid metal.
(3) casting: 680 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 480 ℃, solid solution 8 hours, then under 230 ℃, timeliness 24 hours.
The room temperature tensile strength of the Mg-4Sn-2Si-0.5Sr magnesiumalloy that obtains is 208MPa, and elongation is 4.6%; During 200 ° of C, tensile strength is 136MPa, and elongation is 11%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.02%.
Embodiment 4:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:4%, Si:2%, Sr:1%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:4%, Si:2%, Sr:1%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 710 ℃, obtains liquid metal.
(3) casting: 680 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 490 ℃, solid solution 24 hours, then under 220 ℃, timeliness 12 hours.
The room temperature tensile strength of the Mg-4Sn-2Si-1Sr magnesiumalloy that obtains is 225MPa, and elongation is 5.1%; During 200 ° of C, tensile strength is 142MPa, and elongation is 12.7%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.02%.
Embodiment 5:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:4%, Si:3%, Sr:3%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:4%, Si:3%, Sr:3%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 720 ℃, obtains liquid metal.
(3) casting: 680 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 510 ℃, solid solution 12 hours, then under 210 ℃, timeliness 12 hours.
The room temperature tensile strength of the Mg-4Sn-3Si-3Sr magnesiumalloy that obtains is 220MPa, and elongation is 4.8%; During 200 ° of C, tensile strength is 140MPa, and elongation is 12%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.02%.
Embodiment 6:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:4.5%, Si:1%, Sr:0.5%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:4.5%, Si:1%, Sr:0.5%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 710 ℃, obtains liquid metal.
(3) casting: 690 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 500 ℃, solid solution 8 hours, then under 210 ℃, timeliness 24 hours.
The room temperature tensile strength of the Mg-4.5Sn-1Si-0.5Sr magnesiumalloy that obtains is 210MPa, and elongation is 4.8%; During 200 ° of C, tensile strength is 133MPa, and elongation is 11.8%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.02%.
Embodiment 7:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:4.5%, Si:2%, Sr:0.5%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:4.5%, Si:2%, Sr:0.5%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 720 ℃, obtains liquid metal.
(3) casting: 680 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 490 ℃, solid solution 8 hours, then under 220 ℃, timeliness 18 hours.
The room temperature tensile strength of the Mg-4.5Sn-2Si-0.5Sr magnesiumalloy that obtains is 215MPa, and elongation is 4.7%; During 200 ° of C, tensile strength is 137MPa, and elongation is 11.6%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.02%.
Embodiment 8:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:4.5%, Si:3%, Sr:0.5%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:4.5%, Si:3%, Sr:0.5%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 700 ℃, obtains liquid metal.
(3) casting: 670 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 500 ℃, solid solution 18 hours, then under 200 ℃, timeliness 18 hours.
The room temperature tensile strength of the Mg-4.5Sn-3Si-0.5Sr magnesiumalloy that obtains is 214MPa, and elongation is 4.8%; During 200 ° of C, tensile strength is 131MPa, and elongation is 12%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.02%.
Embodiment 9:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:4.5%, Si:1%, Sr:1%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:4.5%, Si:1%, Sr:1%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 700 ℃, obtains liquid metal.
(3) casting: 690 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 500 ℃, solid solution 18 hours, then under 210 ℃, timeliness 12 hours.
The room temperature tensile strength of the Mg-4.5Sn-1Si-1Sr magnesiumalloy that obtains is 213MPa, and elongation is 4.9%; During 200 ° of C, tensile strength is 135MPa, and elongation is 12.2%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.02%.
Embodiment 10:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:4.5%, Si:3%, Sr:1%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:4.5%, Si:3%, Sr:1%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 710 ℃, obtains liquid metal.
(3) casting: 680 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 510 ℃, solid solution 24 hours, then under 210 ℃, timeliness 18 hours.
The room temperature tensile strength of the Mg-4.5Sn-3Si-1Sr magnesiumalloy that obtains is 220MPa, and elongation is 4.9%; During 200 ° of C, tensile strength is 137MPa, and elongation is 12.3%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.02%.
Embodiment 11:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:4.5%, Si:2%, Sr:2%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:4.5%, Si:2%, Sr:2%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 710 ℃, obtains liquid metal.
(3) casting: 680 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 510 ℃, solid solution 24 hours, then under 220 ℃, timeliness 18 hours.
The room temperature tensile strength of the Mg-4.5Sn-2Si-2Sr magnesiumalloy that obtains is 242MPa, and elongation is 5.4%; During 200 ° of C, tensile strength is 165MPa, and elongation is 13.2%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.03%.
Embodiment 12:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:4.5%, Si:3%, Sr:2%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:4.5%, Si:3%, Sr:2%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 720 ℃, obtains liquid metal.
(3) casting: 690 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 520 ℃, solid solution 24 hours, then under 220 ℃, timeliness 18 hours.
The room temperature tensile strength of the Mg-4.5Sn-3Si-2Sr magnesiumalloy that obtains is 234MPa, and elongation is 5.1%; During 200 ° of C, tensile strength is 154MPa, and elongation is 12.6%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.02%.
Embodiment 13:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:5%, Si:1%, Sr:1%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:5%, Si:1%, Sr:1%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 710 ℃, obtains liquid metal.
(3) casting: 670 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 490 ℃, solid solution 24 hours, then under 240 ℃, timeliness 6 hours.
The room temperature tensile strength of the Mg-5Sn-1Si-1Sr magnesiumalloy that obtains is 214MPa, and elongation is 4.8%; During 200 ° of C, tensile strength is 138MPa, and elongation is 12%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.02%.
Embodiment 14:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:5%, Si:1%, Sr:2%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:5%, Si:1%, Sr:2%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 700 ℃, obtains liquid metal.
(3) casting: 680 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 500 ℃, solid solution 18 hours, then under 230 ℃, timeliness 12 hours.
The room temperature tensile strength of the Mg-5Sn-1Si-2Sr magnesiumalloy that obtains is 238MPa, and elongation is 5.5%; During 200 ° of C, tensile strength is 158MPa, and elongation is 13.6%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.03%.
Embodiment 15:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:5%, Si:2%, Sr:0.5%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:5%, Si:2%, Sr:0.5%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 720 ℃, obtains liquid metal.
(3) casting: 690 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 500 ℃, solid solution 24 hours, then under 220 ℃, timeliness 18 hours.
The room temperature tensile strength of the Mg-5Sn-2Si-0.5Sr magnesiumalloy that obtains is 227MPa, and elongation is 5.4%; In the time of 200 ℃, tensile strength is 148MPa, and elongation is 13.2%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.03%.
The optical texture photo of Mg-5Sn-2Si-0.5Sr alloy is as shown in Figure 2, and the SEM photo is as shown in Figure 4.
Embodiment 16:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:5%, Si:2%, Sr:2%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:5%, Si:2%, Sr:2%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 720 ℃, obtains liquid metal.
(3) casting: 690 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 500 ℃, solid solution 24 hours, then under 220 ℃, timeliness 18 hours.
The room temperature tensile strength of the Mg-5Sn-2Si-2Sr magnesiumalloy that obtains is 250MPa, and elongation is 6.0%; In the time of 200 ℃, tensile strength is 170MPa, and elongation is 15%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.04%.
The optical texture photo of Mg-5Sn-2Si-2Sr alloy is as shown in Figure 3, and the SEM photo is as shown in Figure 5.
Embodiment 17:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:5%, Si:3%, Sr:0.5%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:5%, Si:3%, Sr:0.5%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 710 ℃, obtains liquid metal.
(3) casting: 690 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 500 ℃, solid solution 18 hours, then under 220 ℃, timeliness 12 hours.
The room temperature tensile strength of the Mg-5Sn-3Si-0.5Sr magnesiumalloy that obtains is 217MPa, and elongation is 4.9%; During 200 ° of C, tensile strength is 138MPa, and elongation is 11.8%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.02%.
Embodiment 18:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:5%, Si:3%, Sr:1%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:5%, Si:3%, Sr:1%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 720 ℃, obtains liquid metal.
(3) casting: 690 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 510 ℃, solid solution 24 hours, then under 230 ℃, timeliness 18 hours.
The room temperature tensile strength of the Mg-5Sn-3Si-1Sr magnesiumalloy that obtains is 228MPa, and elongation is 5.2%; During 200 ° of C, tensile strength is 144MPa, and elongation is 13%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.03%.
Embodiment 19:
Contain the Sr heat resistance casting magnesium alloy, each component and mass percent are respectively Sn:5.5%, Si:3%, Sr:3%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, and all the other are Mg.
The preparation method is following:
(1) batching: it is 99.9% pure Mg, 99.9% pure Sn that raw material adopts purity; And Mg-30%Si and Mg-30%Sr master alloy; According to element mass percent Sn:5.5%, Si:3%, Sr:3%, foreign matter content Fe≤0.005%, Cu≤0.015%, Ni≤0.002%, all the other are the ratio batching of Mg.
(2) melting: adopt iron crucible, in well formula resistance furnace, carry out melting, utilize N 2And SF 6Mixed gas is as shielding gas, per-cent meter by volume, N 295%, SF 65%, at first smelting metal Mg treats that it all adds Mg-30%Si master alloy, pure Sn and Mg-30%Sr master alloy after the fusing successively, and the control smelting temperature is 720 ℃, obtains liquid metal.
(3) casting: 690 ℃ of cast, under normal casting technique, model adopts metal mold with molten metal.
(4) thermal treatment: with step (3) products therefrom under 500 ℃, solid solution 12 hours, then under 210 ℃, timeliness 12 hours.
The room temperature tensile strength of the Mg-5.5Sn-3Si-3Sr magnesiumalloy that obtains is 215MPa, and elongation is 4.6%; During 200 ° of C, tensile strength is 135MPa, and elongation is 11.5%; At 200 ° of C, 75MPa, under the 100h condition, the compressive creep amount of alloy is 0.02%.

Claims (5)

1. one kind contains the Sr heat resistance casting magnesium alloy, it is characterized in that: the component of said alloy and mass percent are Sn:3.5%～5.5%, Si:1%～3%, and Sr:0.5%～3%, surplus is Mg and impurity.
2. according to the said a kind of Sr heat resistance casting magnesium alloy that contains of claim 1, it is characterized in that: impurity element and mass percent are Fe≤0.005%, Cu≤0.015%, Ni≤0.002%.
3. according to the said a kind of Sr heat resistance casting magnesium alloy that contains of claim 1, it is characterized in that: the room temperature tensile strength >=200MPa of magnesiumalloy, elongation >=4.5%.
4. according to the said a kind of Sr heat resistance casting magnesium alloy that contains of claim 1, it is characterized in that: under 200 ℃ of conditions, the tensile strength >=130MPa of magnesiumalloy, elongation >=10%.
5. according to the said a kind of Sr heat resistance casting magnesium alloy that contains of claim 1, it is characterized in that: 200 ℃, 75MPa, under the 100h condition, compressive creep amount≤0.05% of alloy.
CN2011103796476A 2011-11-25 2011-11-25 Sr-containing heat-resisting casting magnesium alloy Pending CN102409208A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011103796476A CN102409208A (en) 2011-11-25 2011-11-25 Sr-containing heat-resisting casting magnesium alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011103796476A CN102409208A (en) 2011-11-25 2011-11-25 Sr-containing heat-resisting casting magnesium alloy

Publications (1)

Publication Number Publication Date
CN102409208A true CN102409208A (en) 2012-04-11

Family

ID=45911546

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011103796476A Pending CN102409208A (en) 2011-11-25 2011-11-25 Sr-containing heat-resisting casting magnesium alloy

Country Status (1)

Country Link
CN (1) CN102409208A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104655483A (en) * 2013-11-20 2015-05-27 沈阳工业大学 Hanging-type fixture used in tension and durability of sheet-shaped test sample
CN109161752A (en) * 2018-10-17 2019-01-08 上海海洋大学 A kind of heat-resistant creep-resistant magnesium alloy and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101161840A (en) * 2007-11-29 2008-04-16 哈尔滨工程大学 Mg-Si-Sn series magnesium alloy and heat treatment process for deteriorate Chinese character shaped eutectic Mg2Si phase therein
KR20080069380A (en) * 2007-01-23 2008-07-28 부산대학교 산학협력단 Mg alloy for casting
CN101985713A (en) * 2010-12-09 2011-03-16 重庆理工大学 Method for refining CaMgSn phase in Mg-Sn-Ca series magnesium alloy by adding Sr

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080069380A (en) * 2007-01-23 2008-07-28 부산대학교 산학협력단 Mg alloy for casting
CN101161840A (en) * 2007-11-29 2008-04-16 哈尔滨工程大学 Mg-Si-Sn series magnesium alloy and heat treatment process for deteriorate Chinese character shaped eutectic Mg2Si phase therein
CN101985713A (en) * 2010-12-09 2011-03-16 重庆理工大学 Method for refining CaMgSn phase in Mg-Sn-Ca series magnesium alloy by adding Sr

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李世成等: "铸态Mg-5Sn-(0～3)Sr合金的组织和性能", 《特种铸造及有色合金》, vol. 31, no. 4, 20 April 2011 (2011-04-20), pages 369 - 372 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104655483A (en) * 2013-11-20 2015-05-27 沈阳工业大学 Hanging-type fixture used in tension and durability of sheet-shaped test sample
CN104655483B (en) * 2013-11-20 2017-06-06 沈阳工业大学 A kind of hanging sheet specimens are stretched, persistently use fixture
CN109161752A (en) * 2018-10-17 2019-01-08 上海海洋大学 A kind of heat-resistant creep-resistant magnesium alloy and preparation method thereof
CN109161752B (en) * 2018-10-17 2020-09-04 上海海洋大学 Heat-resistant creep-resistant magnesium alloy and preparation method thereof

Similar Documents

Publication Publication Date Title
CN101353747B (en) Die-casting heat resisting magnesium alloy and preparation thereof
CN101831581B (en) High strength and toughness rare earth magnesium alloy
CN101381833A (en) Heat resisting casting magnesium alloy and preparation method thereof
CN106148787B (en) Magnesium lithium alloy and preparation method thereof suitable for sand casting
CN102181763B (en) Rare earth magnesium alloy with stable high-temperature strength
CN102296219A (en) Mg-Sn-Sr-based magnesium alloy with high strength and toughness and heat resistance
WO2016074423A1 (en) Magnesium alloy and preparation method and use thereof
CN103305738A (en) Silicon-containing heat-resistant rare earth magnesium alloy and preparation method thereof
WO2022134275A1 (en) Aluminum alloy and aluminum alloy structural member
Lu et al. As-cast microstructure and Sr-containing phases of AZ31 magnesium alloys with high Sr contents
Yang et al. Effects of solution heat treatment on microstructure and mechanical properties of AZ61-0.7 Si magnesium alloy
CN109852859B (en) High-strength-toughness heat-resistant Mg-Y-Er alloy suitable for gravity casting and preparation method thereof
WO2014026446A1 (en) Alloy for magnesium and magnesium alloy grain refinement, and preparation method thereof
CN102127669A (en) Heatproof and anticorrosion rare earth magnesium alloy with high obdurability and preparation method thereof
CN101985715B (en) High performance cast magnesium alloy and preparation method thereof
Hanwu et al. Preparation and characterization of Mg-6Li and Mg-6Li-1Y alloys
CN103146972A (en) Multielement rare-earth magnesium alloy and preparation method thereof
CN109881064B (en) High-strength high-toughness heat-resistant die-casting Mg-Gd-Y alloy and preparation method thereof
CN104561709B (en) High-creep-performance casting magnesium alloy and preparation method thereof
CN104561717B (en) high performance heat resistant cast magnesium alloy and preparation method thereof
CN102409208A (en) Sr-containing heat-resisting casting magnesium alloy
CN103966494A (en) Highly heat-resistant magnalium containing calcium and rare earth
CN109881067B (en) High-strength high-toughness heat-resistant die-casting Mg-Gd-Er alloy and preparation method thereof
CN109811224B (en) High-strength high-toughness heat-resistant die-casting Mg-Y-Er alloy and preparation method thereof
CN103484742A (en) High-strength damping magnesium alloy

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20120411