CN105568101A - High-strength magnalium alloy and preparation method thereof - Google Patents
High-strength magnalium alloy and preparation method thereof Download PDFInfo
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- CN105568101A CN105568101A CN201610026099.1A CN201610026099A CN105568101A CN 105568101 A CN105568101 A CN 105568101A CN 201610026099 A CN201610026099 A CN 201610026099A CN 105568101 A CN105568101 A CN 105568101A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/02—Alloys based on magnesium with aluminium as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0052—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides
- C22C32/0063—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides based on SiC
Abstract
The invention discloses high-strength magnalium alloy. The magnalium alloy comprises magnesium, aluminum, zirconium, neodymium, yttrium and silicon carbide. Specifically, the magnalium alloy comprises 10%-20% by mass of the aluminum, 1%-5% by weight of the zirconium, 1%-3% by mass of the neodymium, 1%-3% by weight of the yttrium, 10%-25% by mass of the nanoscale silicon carbide, and the balance magnesium. According to the high-strength magnalium alloy, the nanoscale silicon carbide is mixed into the magnalium alloy, and the high-strength magnalium alloy is obtained. The average diameter of the silicon carbide of the high-strength magnalium alloy is 200 nanometers or less, the average crystal size of the magnalium alloy is 80 nanometers or less, and the tensile strength of the magnalium alloy can reach 400 MPa or above. The magnalium alloy is prepared through the steps of smelting, nano-particle mixing and dispersing, cooling, distorting, asymmetrical rolling and the like.
Description
Technical field
The present invention relates to the preparation method of a kind of magnalium of high strength and preparation method thereof, high-performance magnalium of especially a kind of SiC reinforcement and preparation method thereof.
Background technology
Magnalium is a kind of light metal material, possesses the advantage that density is little, applies in the fields such as hand-hold electronic equipments, automobile, aerospace at present.Meanwhile, the intensity of magnesium alloy is not high, and as engineering materials, people expect the material of high strength usually, but due to the atomic structure feature of magnalium, its plasticity is poor, still can not obtain the magnalium of high strength.
Chinese patent CN103031452A discloses a kind of SiC particles reinforced magnesium base composite material and preparation method, this invention for starting material, adopts powder metallurgy and multiway forging legal system for SiC particles reinforced magnesium base composite material with pure Mg powder, Al powder and SiC particle micro mist.By powder metallurgy and multiway forging two kinds of forming methods, make, between magnesium alloy substrate and SiC particle, there is good wetting property and associativity, and eliminate the hole remaining in material internal in powder metallurgy forming process, finally obtain the distribution of SiC uniform particles, the magnesium base composite material that magnesium alloy substrate crystal grain is tiny, makes this matrix material have better mechanical property.The tensile strength of the magnesium alloy of this invention is lower than 200MPa.
Chinese patent 105154704A discloses a kind of preparation method of high temperature resistant magnesium alloy materials.This material is made up of the powder of following weight: magnesium powder 63-71 part, iron powder 9-13 part, carborundum powder 5-9 part, sulfuration manganese powder 5-7 part, zircon corundum powder 6-10 part, Graphite Powder 99 13-17 part, electric smelting ceramsite sand 5-10 part, glass fibre 3-6 part, glass putty 10-14 part, cupric sulfide 4-8 part, cobalt powder 4-8 part, aluminum oxide powder 4-8 part, feldspar in powder 3-7 part, titanium silicide 4-9 part.Its preparation method comprises: mixing, compacting, sintering, shaping and immersion oil process.By to the adjustment of material composition and optimization, the invention provides high temperature resistant magnesium alloy materials and there is more eager to do well in everything, hardness, and the advantage of high high-temp stability; And raw material is easy to get, tooling cost is low, preparation technology is simple, parameter is easily controlled, production process safety and environmental protection, is applicable to large-scale industrial production.
Chinese patent 104109790A provides a kind of high-strength magnesium alloy material and preparation method thereof, comprises aluminium (Al) in this magnesium alloy materials component, zinc (Zn), Manganous chloride tetrahydrate (MnCl
2), silicon carbide (SiC) crystal grain, beryllium (Be), magnesium (Mg), wherein, each component composition of magnesium alloy materials is respectively by weight percentage: aluminium (Al): 10.5-12%, zinc (Zn): 6-7%, Manganous chloride tetrahydrate (MnCl
2): 0.6-1.5%, silicon carbide (SiC) crystal grain: 2-3.5%, beryllium (Be): 0.01-0.03%, surplus is magnesium (Mg).This alloy replaces traditional extrusion process by the mode of continuous casting, the production of magnesium alloy is completed in the mode of short route, shorten Production Flow Chart, save cost, prepared magnesium alloy materials compared to traditional magnesium alloy materials, in tensile strength, yield strength, unit elongation, Young's modulus, hardness etc. all be improved significantly.
More than invent the performance particularly strength property being all devoted to improve magnalium, but, its tensile strength is all at below 400MPa, and its intensity also has larger gap with engineering materials (iron and steel, titanium alloy, carbon fiber, aluminium alloy etc.) conventional at present.
Summary of the invention:
Goal of the invention: in order to expand the Application Areas of magnalium, improve its intensity, plays that it is a little low-density, the invention provides a kind of high-strength magnesium aluminium alloy and preparation method thereof.
Technical scheme of the present invention is as follows:
Adopt the method for vacuum melting, by certain mass proportioning Melting Magnesium alloy, alloying constituent is: aluminium massfraction is 10-20%; Weight percent zirconia content is 1-5%; Neodymium massfraction is 1-3%; Yttrium weight percent content is 1-3%; The massfraction of nanometer silicon carbide is 10-25%; Surplus is magnesium.In the process of melting, mix SiC nano particle in magnalium, be uniformly dispersed, Slow cooling also vacuumizes and allows nano particle improve concentration further, then the mode of torsional deformation is under high pressure adopted, adopt asymmetrical rolling again, further crystal grain thinning, put forward heavy alloyed intensity.According to the present invention, a kind of high-strength magnalium of nano-particle reinforcement can be prepared.Average crystal grain diameter in its microstructure is below 80 nanometers, and the diameter of nano particle is below 200 nanometers, and the tensile strength of magnalium is at more than 400MPa.
Concrete preparation method comprises the following steps:
(1) prepare raw material: the high purity magnesium, aluminium, zirconium, neodymium, the yttrium that prepare purity more than 99.9%, and median size is the nano SiC of below 200 nanometers;
(2) molten alloy: magnesium, aluminium, zirconium, neodymium, yttrium are pressed certain mass mark batching, and melting in protective atmosphere, adds nano SiC in fusion process, maintains the temperature at 700 ° of C, adopts ultrasonic method to disperse;
(3) involutory ingot carries out Slow cooling, and keep vacuumizing state in the process of cooling, low vacuum is in 5torr;
(4), after cooling, alloy pig is processed into discoid;
(5) space that the groove coarse-grain alloy disks that step (4) processes being put into upper and lower two pressure anvils is formed, alloy applies high pressure, and rotates pressure anvil to reverse alloy disks, makes it the deformation that is distorted;
(6) start Multi-functional rolling system, the speed ratio of setting top and bottom rolls, speed ratio is 1.1-1.5; Setting each rolling deformation amount is 1-8%; The speed of setting low speed roller is 0.5-2 meter per second;
(7) start main driving motor, start the operation of rolling;
(8), after treating a rolling, (2) (3) process more than 15 times is repeated;
(9) full annealed thermal treatment is carried out.
Wherein, the shielding gas in step (1) is CO
2with the mixed gas of SF6, in step (3), speed of cooling is less than 0.5k per second; The pressure that step (5) interalloy bears is 1.5-5GPa; Rolling temperature in step (8) is room temperature: the recrystallization temperature in step (9) is 1/3 ~ 1/4 of the fusing point of magnesium, time 3-20 minute.
As preferably, CO
250:1 ~ 100:1 with the scope of the volume ratio of SF6;
As preferably, the speed of rotation per minute in step (5) 2 ~ 5 turns, rotates altogether 3-20 circle;
As preferably, the granularity average out to 60-120 nanometer of the silicon carbide adopted.
Useful effect:
The present invention adopts the particle of the nanometer silicon carbide of high strength as enhanced granule, not only can play the effect of crystal grain thinning, and as the obstacle of dislocation motion, can stop the dislocation moving of metal, thus reinforced metal; Meanwhile, crystal grain thinning can play the effect improving alloy plasticity.
It is matrix that the present invention adopts with magnesium, can give full play to its low-density advantage, with the application making this alloy be adapted to the field such as aerospace, automotive light weight technology.In the process of alloying, adopt low-density metallic aluminium as far as possible.In order to improve its intensity, have employed rare earth element zirconium, neodymium, yttrium, strengthening to form rare-earth phase in the alloy.
The present invention carries out ultrasonic disperse under adopting high temperature metal liquid state, and this mode efficiently solves nano particle and is difficult to finely dispersed problem in a metal.Ultrasonic disperse is used under liquid metal state, can be even by nanoparticulate dispersed, to solve the defect that in the technology such as conventional hybrid, stirring, nanoparticulate dispersed is bad.Adopt Slow cooling after melting, keep vacuum tightness simultaneously, magnesium can be made, the metallic vapor of aluminium is constantly drawn out of, reduce the content of magnesium, aluminium in alloy, thus improve the volume fraction of nano particle in alloy, strengthen the effect of reinforced by nanoparticles further.
In the process applying high pressure twist distortion, crystal grain larger in alloy substrate is broken down into more tiny nanocrystal.In addition, the present invention adopts asymmetrical rolling to process further material, this rolling method can crystal grain thinning further, and the distribution of thickness crystal grain can be formed at organization internal, this material structure can reach carries on the back work hardening greatly, and this is non-existent in the material of even grained or the material of conventional machining.The present invention adopts micro Process, multi-pass, is suitable for obtaining destination organization.The average crystal grain diameter of final alloy is generally below 80 nanometers, and according to Hall-join strange relation, crystal grain becomes tiny, and the intensity of alloy can be made higher, meanwhile, also can improve the plasticity of alloy.By magnalium prepared by the present invention, its tensile strength up to more than 400MPa, can possess excellent plasticity simultaneously, can be applied to the field such as automobile, space flight and aviation.
Embodiment
Describe preparation method of the present invention in detail below by embodiment, but be not construed as limiting the invention.
Embodiment 1
(1) prepare raw material: the high purity magnesium, aluminium, zirconium, neodymium, the yttrium that prepare purity more than 99.9%, and median size is the nano SiC of below 200 nanometers;
(2) molten alloy: magnesium, aluminium, zirconium, neodymium, yttrium, silicon carbide are prepared burden, at CO according to the mass ratio of 66.5%, 18%, 2.5%, 1.5%, 1.5%, 8%
2with melting in the mixed gas of SF6, wherein CO
2100:1 with SF6 volume ratio; Add nano SiC in fusion process, maintain the temperature at 700 ° of C, adopt ultrasonic method to disperse;
(3) involutory ingot carries out Slow cooling, speed of cooling 0.3k per second; Keep vacuumizing state, vacuum tightness 3torr in the process of cooling;
(4), after cooling, alloy pig is processed into discoid;
(5) space that the groove coarse-grain alloy disks that step (4) processes being put into upper and lower two pressure anvils is formed, alloy applies 5GPa high pressure, and rotate pressure anvil to reverse alloy disks with the speed of per minute 2 turns, make it the deformation that is distorted, rotation 3 is enclosed altogether;
(6) start Multi-functional rolling system, the speed ratio of setting top and bottom rolls, speed ratio is 1.5; Setting each rolling deformation amount is 3%; The speed of setting low speed roller is 2 meter per seconds;
(7) start main driving motor, start the operation of rolling;
(8), after treating a rolling, (6) (7) process 25 times are repeated;
(9) full annealed thermal treatment is carried out at 200 degrees Celsius, 8 minutes time.
Carry out alloying element analysis, alloying constituent is: aluminium massfraction is 15.2%; Weight percent zirconia content is 4.2%; Neodymium massfraction is 2.7%; Yttrium weight percent content is 2.7%; The massfraction of nanometer silicon carbide is 16.5%; Surplus is magnesium.
Embodiment 2
(1) prepare raw material: the high purity magnesium, aluminium, zirconium, neodymium, the yttrium that prepare purity more than 99.9%, and median size is the nano SiC of below 200 nanometers;
(2) molten alloy: magnesium, aluminium, zirconium, neodymium, yttrium, silicon carbide are prepared burden, at CO according to the mass ratio of 76.2%, 15%, 1%, 1%, 0.8%, 6%
2with melting in the mixed gas of SF6, wherein CO
280:1 with SF6 volume ratio; Add nano SiC in fusion process, maintain the temperature at 700 ° of C, adopt ultrasonic method to disperse;
(3) involutory ingot carries out Slow cooling, speed of cooling 0.5k per second; Keep vacuumizing state, vacuum tightness 3torr in the process of cooling;
(4), after cooling, alloy pig is processed into discoid;
(5) space that the groove coarse-grain alloy disks that step (4) processes being put into upper and lower two pressure anvils is formed, alloy applies 5GPa high pressure, and rotate pressure anvil to reverse alloy disks with the speed of per minute 5 turns, make it the deformation that is distorted, rotation 8 is enclosed altogether;
(6) start Multi-functional rolling system, the speed ratio of setting top and bottom rolls, speed ratio is 1.1; Setting each rolling deformation amount is 1%; The speed of setting low speed roller is 0.5 meter per second;
(7) start main driving motor, start the operation of rolling;
(8), after treating a rolling, (6) (7) process 25 times are repeated;
(9) full annealed thermal treatment is carried out at 190 degrees Celsius, 10 minutes time.
Carry out alloying element analysis, alloying constituent is: aluminium massfraction is 13.3%; Weight percent zirconia content is 1.8%; Neodymium massfraction is 1.9%; Yttrium weight percent content is 1.4%; The massfraction of nanometer silicon carbide is 13%; Surplus is magnesium.
Embodiment 3
(1) prepare raw material: the high purity magnesium, aluminium, zirconium, neodymium, the yttrium that prepare purity more than 99.9%, and median size is the nano SiC of below 200 nanometers;
(2) molten alloy: magnesium, aluminium, zirconium, neodymium, yttrium, silicon carbide are prepared burden, at CO according to the mass ratio of 66.5%, 19%, 1.5%, 1%, 1%, 11%
2with melting in the mixed gas of SF6, wherein CO
250:1 with SF6 volume ratio; Add nano SiC in fusion process, maintain the temperature at 700 ° of C, adopt ultrasonic method to disperse;
(3) involutory ingot carries out Slow cooling, speed of cooling 0.2k per second; Keep vacuumizing state, vacuum tightness 4torr in the process of cooling;
(4), after cooling, alloy pig is processed into discoid;
(5) space that the groove coarse-grain alloy disks that step (4) processes being put into upper and lower two pressure anvils is formed, alloy applies 1.5GPa high pressure, and rotate pressure anvil to reverse alloy disks with the speed of per minute 3 turns, make it the deformation that is distorted, rotation 10 is enclosed altogether;
(6) start Multi-functional rolling system, the speed ratio of setting top and bottom rolls, speed ratio is 1.3; Setting each rolling deformation amount is 2%; The speed of setting low speed roller is 2 meter per seconds;
(7) start main driving motor, start the operation of rolling;
(8), after treating a rolling, (6) (7) process 20 times are repeated;
(9) full annealed thermal treatment is carried out at 170 degrees Celsius, 20 minutes time.
Carry out alloying element analysis, alloying constituent is: aluminium massfraction is 15.6%; Weight percent zirconia content is 2.6%; Neodymium massfraction is 1.8%; Yttrium weight percent content is 1.7%; The massfraction of nanometer silicon carbide is 23%; Surplus is magnesium.
Embodiment 4
(1) prepare raw material: the high purity magnesium, aluminium, zirconium, neodymium, the yttrium that prepare purity more than 99.9%, and median size is the nano SiC of below 200 nanometers;
(2) molten alloy: magnesium, aluminium, zirconium, neodymium, yttrium, silicon carbide are prepared burden, at CO according to the mass ratio of 63.5%, 22%, 2.5%, 1.5%, 1.5%, 10%
2with melting in the mixed gas of SF6, wherein CO
280:1 with SF6 volume ratio; Add nano SiC in fusion process, maintain the temperature at 700 ° of C, adopt ultrasonic method to disperse;
(3) involutory ingot carries out Slow cooling, speed of cooling 0.4k per second; Keep vacuumizing state, vacuum tightness 5torr in the process of cooling;
(4), after cooling, alloy pig is processed into discoid;
(5) space that the groove coarse-grain alloy disks that step (4) processes being put into upper and lower two pressure anvils is formed, alloy applies 1.5GPa high pressure, and rotate pressure anvil to reverse alloy disks with the speed of per minute 2 turns, make it the deformation that is distorted, rotation 20 is enclosed altogether;
(6) start Multi-functional rolling system, the speed ratio of setting top and bottom rolls, speed ratio is 1.4; Setting each rolling deformation amount is 3%; The speed of setting low speed roller is 2 meter per seconds;
(7) start main driving motor, start the operation of rolling;
(8), after treating a rolling, (6) (7) process 20 times are repeated;
(9) full annealed thermal treatment is carried out at 180 degrees Celsius, 3 minutes time.
Carry out alloying element analysis, alloying constituent is: aluminium massfraction is 18.2%; Weight percent zirconia content is 4.1%; Neodymium massfraction is 2.7%; Yttrium weight percent content is 2.8%; The massfraction of nanometer silicon carbide is 20.5%; Surplus is magnesium.
Performance Detection:
Carry out tensile test at room temperature, obtain the tensile strength of alloy prepared by each embodiment; Adopt TEM (transmission electron microscope) analysis, obtain the crystal grain diameter of alloy; Result is as following table:
Can see from upper table, adopt the present invention, the tensile strength doing the magnalium prepared, at more than 400MPa, is much higher than prior art level.
The above is only some examples of embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention; some improvements and modifications can also be made; these improvements and modifications also should be considered as protection scope of the present invention; such as, some other alloying element can be added in the alloy again, to improve its performance.
Claims (7)
1. a magnalium for high strength, is characterized in that: this magnalium contains magnesium, aluminium, zirconium, neodymium, yttrium and silicon carbide, and its content is aluminium massfraction is 10-20%; Weight percent zirconia content is 1-5%; Neodymium massfraction is 1-3%; Yttrium weight percent content is 1-3%; The massfraction of nanometer silicon carbide is 10-25%; Surplus is magnesium; In alloy, the mean diameter of silicon carbide is below 200 nanometers, and the average crystal grain of magnalium is below 80 nanometers.
2. magnalium as claimed in claim 1, its manufacture method comprises following steps:
(1) prepare raw material: the high purity magnesium, aluminium, zirconium, neodymium, the yttrium that prepare purity more than 99.9%, and median size is the nano SiC of below 200 nanometers;
(2) molten alloy: magnesium, aluminium, zirconium, neodymium, yttrium are pressed certain mass mark batching, and melting in protective atmosphere, adds nano SiC in fusion process, maintains the temperature at 700 ° of C, adopts ultrasonic method to disperse;
(3) involutory ingot carries out Slow cooling, and keep vacuumizing state in the process of cooling, low vacuum is in 5torr;
(4), after cooling, alloy pig is processed into discoid;
(5) space that the groove coarse-grain alloy disks that step (4) processes being put into upper and lower two pressure anvils is formed, alloy applies high pressure, and rotates pressure anvil to reverse alloy disks, makes it the deformation that is distorted;
(6) start Multi-functional rolling system, the speed ratio of setting top and bottom rolls, speed ratio is 1.1-1.5; Setting each rolling deformation amount is 1-8%; The speed of setting low speed roller is 0.5-2 meter per second;
(7) start main driving motor, start the operation of rolling;
(8), after treating a rolling, (2) (3) process more than 15 times is repeated;
(9) full annealed thermal treatment is carried out.
3. the preparation method of magnalium as claimed in claim 2, is characterized in that: shielding gas is CO
2with the mixed gas of SF6.
4. the preparation method of magnalium as claimed in claim 2, is characterized in that: speed of cooling is less than 0.5k per second.
5. the preparation method of magnalium as claimed in claim 2, is characterized in that: the pressure that alloy bears is 1.5-5GPa, speed of rotation per minute 2 ~ 5 turns.
6. the preparation method of magnalium as claimed in claim 2, is characterized in that: in step (2), the atomic ratio of magnesium and aluminium is 3 ~ 6:1.
7. magnalium preparation method as claimed in claim 2, is characterized in that: described rolling temperature is room temperature.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106480346A (en) * | 2016-11-18 | 2017-03-08 | 扶绥县科学技术情报研究所 | The preparation method of magnesium alloy |
| CN106498250A (en) * | 2016-11-18 | 2017-03-15 | 扶绥县科学技术情报研究所 | The processing method of magnesium alloy |
| CN106636701A (en) * | 2016-11-18 | 2017-05-10 | 扶绥县科学技术情报研究所 | Rare earth magnesium alloy fabrication method |
| CN106636823A (en) * | 2016-12-27 | 2017-05-10 | 常州大学 | Novel magnesium alloy composite material preparation method |
| CN106756145A (en) * | 2016-11-18 | 2017-05-31 | 扶绥县科学技术情报研究所 | The preparation method of magnesium-rare earth |
| CN107541754A (en) * | 2017-09-08 | 2018-01-05 | 董晓 | A kind of preparation method of thermal crack resistant magnesium alloy |
| CN107619967A (en) * | 2017-08-31 | 2018-01-23 | 太仓市腾友精密机械有限公司 | A kind of handware high-temperature-resistant, tensile aluminium alloy |
| CN109182862A (en) * | 2018-11-21 | 2019-01-11 | 蚌埠创特新材料科技有限公司 | A kind of anticorrosive magnesium-aluminium alloy |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106480346A (en) * | 2016-11-18 | 2017-03-08 | 扶绥县科学技术情报研究所 | The preparation method of magnesium alloy |
| CN106498250A (en) * | 2016-11-18 | 2017-03-15 | 扶绥县科学技术情报研究所 | The processing method of magnesium alloy |
| CN106636701A (en) * | 2016-11-18 | 2017-05-10 | 扶绥县科学技术情报研究所 | Rare earth magnesium alloy fabrication method |
| CN106756145A (en) * | 2016-11-18 | 2017-05-31 | 扶绥县科学技术情报研究所 | The preparation method of magnesium-rare earth |
| CN106636823A (en) * | 2016-12-27 | 2017-05-10 | 常州大学 | Novel magnesium alloy composite material preparation method |
| CN106636823B (en) * | 2016-12-27 | 2018-05-01 | 常州大学 | A kind of preparation method of novel magnesium alloy composite material |
| CN107619967A (en) * | 2017-08-31 | 2018-01-23 | 太仓市腾友精密机械有限公司 | A kind of handware high-temperature-resistant, tensile aluminium alloy |
| CN107541754A (en) * | 2017-09-08 | 2018-01-05 | 董晓 | A kind of preparation method of thermal crack resistant magnesium alloy |
| CN109182862A (en) * | 2018-11-21 | 2019-01-11 | 蚌埠创特新材料科技有限公司 | A kind of anticorrosive magnesium-aluminium alloy |
| CN109182862B (en) * | 2018-11-21 | 2020-04-03 | 阜阳创启工艺品有限公司 | Corrosion-resistant magnesium-aluminum alloy |
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