CN108715964A - A kind of magnesium-rare earth and preparation method thereof - Google Patents
A kind of magnesium-rare earth and preparation method thereof Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C23/00—Alloys based on magnesium
- C22C23/06—Alloys based on magnesium with a rare earth metal as the next major constituent
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
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- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
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Abstract
The present invention relates to field of magnesium alloy material, and in particular to a kind of magnesium-rare earth and preparation method thereof.The magnesium-rare earth of the present invention, consists of the following mass percentage components：8.0~8.5%Nd, 0.5~0.9%Zn, 0.6~0.9%Zr, 0.3~0.5%Al, 4.5~6% heavy rare earth elements, surplus are Mg and inevitable impurity.Compared with prior art, the method that magnesium-rare earth of the invention utilizes multicomponent alloy comprehensively utilizes the improvement tissue of rare earth element and other elements and proposes high performance effect, significantly improves the flame retardant property and mechanical property of magnesium alloy.
Description
Technical field
The present invention relates to field of magnesium alloy material, and in particular to a kind of magnesium-rare earth and preparation method thereof.
Background technology
In existing metal structure material system, magnesium alloy has higher specific strength and specific stiffness, additionally has excellent
Different casting character, machinability and higher damping vibration-proof performance, is easily recycled, and has environmental protection characteristic, has
Very extensive application prospect, it is deep to be favored by industries such as aerospace, telecommunications and auto industrys.Magnesium alloy in recent years
Application as structural material rapidly develops.Structural material is generally referred to as being used to support the material of component, casing component,
It is required that material has higher mechanical property and convenient for mechanical processing；In addition in some industries and technical field, it is desirable that material
Material should have certain high temperature resistance.Therefore have to its mechanical property and physical property when selecting structural material higher
Requirement.
Rare earth (RE) element is to improve magnesium alloy room temperature and the effective alloying element of mechanical behavior under high temperature, therefore to magnesium alloy
Middle addition RE elements are common one of the methods for improving Properties of Magnesium Alloy.The China that application publication number is CN107858575A is specially
Profit discloses a kind of magnesium alloy.The magnesium alloy ingredient percent is：3.5~6.5%Y, 1.5~3.5%Nd, 1.5~4%
Gd, 0~0.5%Zn, 0.2~0.7%Zr, 0~0.5%Ag, surplus Mg.The intensity of the alloy is higher and heat resistance is good
It is good, but its flame retardant property is still difficult to meet demand.
Magnesium alloy high temperature oxidation resistance is poor, is highly combustible, and obdurability is not ideal enough, and it is wide that the two limits magnesium alloy
General use.Therefore, one that the ideal high-performance magnesium-alloy with anti-flammability is always magnesium alloy research field how is obtained
Important topic.
Invention content
The purpose of the present invention is to provide a kind of magnesium-rare earth, which has preferable anti-flammability and mechanics
Performance can meet using needs.
The present invention also aims to provide a kind of preparation method of above-mentioned magnesium-rare earth.
To achieve the above object, technical solution used by magnesium-rare earth of the invention is：
A kind of magnesium-rare earth, consists of the following mass percentage components：8.0~8.5%Nd, 0.5~0.9%Zn,
0.6~0.9%Zr, 0.3~0.5%Al, 4.5~6% heavy rare earth elements, surplus are Mg and inevitable impurity.
RE elements are added in magnesium alloy can play the effect of solution strengthening, precipitation strength and dispersion-strengtherning, so as to improve
The room temperature and mechanical behavior under high temperature of magnesium alloy, while RE elements form RE-O protective films in Mg alloy surface under hot environment,
The high-temperature stability of Mg alloy surface oxidation film can be improved so as to improve the flame retardant property of magnesium alloy.
The present invention is using light rare earth elements Nd as main adding elements.The solid solubility of Nd elements in the magnesium alloy is larger, simultaneously
Dystectic intermetallic compound Mg can be formed in the magnesium alloy41Nd5, assign the good Precipitation of alloy and strengthen and be dissolved strong
Change effect.Wherein reinforcing and flame retardant effect is then not achieved in the additive amount of Nd very little, and addition can then cause alloy proportion to increase too much,
Brittleness increases, and is unfavorable for the promotion of mechanical property.The additive amount of Nd elements is with mass percent 8.0~8.5% in the present invention
Preferably.
The magnesium-rare earth of the present invention is also added into heavy rare earth element Y and Gd.Heavy rare earth element Y, Gd consolidate magnesium alloy
Solubility is very big, can promote solid solution and the Precipitation effect of Nd, make high-melting-point precipitated phase Mg41Nd5It is distributed more disperse, by force
Change and flame retardant effect is more preferable.The additive amount of heavy rare earth element is advisable with mass percent 4.5~6% in the present invention.Preferably, weight
The addition mass ratio of rare earth element y and Gd are 1：1~3, it is determined according to the maximum solid solution degrees of Y and Gd in the magnesium alloy and works as Y and Gd
Addition mass ratio be 1：Have the effect of when 2 best.
The present invention also adds tri- kinds of alloy elements of Zn, Al, Zr in the magnesium alloy.The addition of Zn can reduce magnesium alloy
The concentration of middle objectionable impurities Fe, Ni, Cu are conducive to the promotion of magnesium alloy plasticity and room temperature intensity, while can improve skin covering of the surface
High-temperature stability so that improve flame retardant property.Al is one of alloy element mostly important in magnesium alloy, the addition one of Al
Aspect can improve the stability of Mg alloy surface oxidation film, can improve the flame retardant property of magnesium alloy to a certain extent, another
The addition of aspect, a small amount of Al being capable of notable Refining Mg Alloy tissue.And the addition of Al will not be formed less in the present invention
Mg17Al12Weaken phase.Zr is one of important addition element of magnesium alloy, being capable of apparent Refining Mg Alloy microscopic structure, Zr and Al
Compound addition the microstructure thinning effect of the alloy can be made more preferable.
The magnesium-rare earth of the present invention can be made using conventional method, but the technology of preparation method of the present invention
Scheme includes the following steps：
(1) under protective atmosphere, magnalium zinc molten metal is prepared；
(2) under protective atmosphere, magnesium neodymium intermediate alloy is added into Mg-Al-Zn Alloy melt, fusing prepares magnalium zinc neodymium gold
Belong to melt；
(3) under protective atmosphere, into magnalium zinc neodymium molten metal, the raw material magnesium alloy containing yttrium, gadolinium, zirconium, fusing is added
Prepare magnesium alloy melt；
(4) under protective atmosphere, magnesium alloy melt is cast, cast alloy is obtained；
(5) solution treatment and ageing treatment are carried out to cast alloy.
In the preparation process of magnesium alloy, since the chemical property of magnesium alloy is more active, it is easy oxidation and burning, is needed
Safeguard measure is taken to prevent molten metal surface from aoxidizing.Gas protection method is commonly used in production, it is common to protect gas for SF6、
Nitrogen, CO2Deng.The protection gas that the present invention uses is SF6And CO2Gaseous mixture.
In order not to introducing other impurities in above-mentioned steps (1), prepare magnalium zinc molten metal using raw material be respectively pure magnesium,
Fine aluminium, pure zinc.
In above-mentioned steps (2), under protective atmosphere, magnesium neodymium intermediate alloy is added to 670~680 DEG C of magnesium aluminum zinc metal and is melted
Fusing obtains magnalium zinc neodymium alloy melt in liquid.
In above-mentioned steps (3), under protective atmosphere, magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy and Mg-Zr intermediate alloy are added
Enter into 690~700 DEG C of magnalium zinc neodymium alloy melt, surface scum is removed after keeping the temperature 5~6min, then heat to 710~
720 DEG C, alloy is made fully to melt, magnesium alloy melt is obtained after standing 5~8min.
Since the fusing point of pure neodymium, pure yttrium, pure gadolinium and pure zirconium is at 1000 DEG C or more, if being used in magnesium alloy preparation process
Simple metal then consumes larger energy and higher to equipment requirement, and intermediate alloy is fusible therefore this hair at a lower temperature
It is bright to use magnesium neodymium intermediate alloy, magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy and Mg-Zr intermediate alloy.
Before melting for energy-saving and the reduction temperature difference the influence, in the pure magnesium of raw material, fine aluminium, pure zinc, magnesium neodymium
Between alloy, magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy and Mg-Zr intermediate alloy carry out the pre-heat treatment.Preferably, preheating temperature
Degree is 200~220 DEG C, and preheating time is 1~3h.
The temperature difference in above-mentioned steps (4) before casting between reduction alloy molten solution and mold, in magnesium alloy melt temperature
It casts when being down to 670~680 DEG C.And mold is steel die.
Solid solution temperature where in above-mentioned steps (5) is 510~520 DEG C, and the time is 6~8h.
Aging temperature is 200~220 DEG C in above-mentioned steps (5), and the time is 8~10h.
The present invention comprehensively utilizes the improvement tissue of rare earth element (Nd, Y, Gd) and other elements (Al, Zr, Zn) and raising property
The effect of energy, significantly improves the flame retardant property of magnesium alloy, burning point reaches as high as 809 DEG C.The magnesium-rare earth of the present invention utilizes
The method of multicomponent microalloying not only increases the flame retardant property of magnesium alloy, while also improving the mechanical property of magnesium alloy.
Highest tensile strength respectively can be to 291MPa and 239MPa, most at outdoor and 200 DEG C for the high Nd magnesium-rare earths of the present invention
High elongation respectively can be to 7.8% and 12.5.
Specific implementation mode
Technical scheme of the present invention is described further with reference to specific embodiment.
The pure magnesium of raw material that is arrived involved in the specific embodiment of the invention, fine aluminium, pure zinc, magnesium neodymium intermediate alloy, among magnesium yttrium
Alloy, magnesium gadolinium intermediate alloy and Mg-Zr intermediate alloy are commercial product.
Embodiment 1
The magnesium-rare earth of the present embodiment, consists of the following mass percentage components：8.0%Nd, 0.9%Zn, 0.8%
Zr, 0.5%Al, 5.4% heavy rare earth element, surplus are Mg and inevitable impurity.Wherein heavy rare earth element is Y and Gd,
Mass percent is respectively 2.7% and 2.7%, and the mass ratio of Y and Gd are 1：1.
Embodiment 2
The preparation method of the magnesium-rare earth of the present embodiment, includes the following steps：
(1) it is calculated separately according to the proportioning in embodiment 1 and weighs the pure magnesium of raw material, fine aluminium, pure zinc, magnesium neodymium intermediate alloy, magnesium
Yttrium intermediate alloy, magnesium gadolinium intermediate alloy and Mg-Zr intermediate alloy；
(2) in CO2And SF6It is mixed gas protected under, the pure magnesium after 2h will be preheated at 200 DEG C, fine aluminium, pure zinc are put successively
Enter and melted into corundum crucible, obtains magnalium zinc molten metal；
(3) in CO2And SF6It is mixed gas protected under, be added at 200 DEG C when magnalium zinc molten metal is heated to 670 DEG C
The magnesium neodymium intermediate alloy fusing after 2h is preheated, magnalium zinc neodymium molten metal is obtained；
(4) in CO2And SF6It is mixed gas protected under, be added 200 when magnalium zinc neodymium molten metal is warming up to 690 DEG C
DEG C preheating 2h after magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy and Mg-Zr intermediate alloy, keep the temperature 6min, after alloy all fusing after
Surface scum is removed, stops heating after temperature is warming up to 710 DEG C, 7min is stood, obtains magnesium alloy melt；
(5) it when magnesium alloy melt temperature is down to 670 DEG C, is cast in steel die, obtains cast alloy；
(6) obtained cast alloy is subjected to solution treatment and ageing treatment：The temperature of solution treatment is 510 DEG C, processing
Time is 6h；The temperature of ageing treatment is 200 DEG C, and processing time is 8h to get magnesium-rare earth.
Embodiment 3
The magnesium-rare earth of the present embodiment, consists of the following mass percentage components：8.0%Nd, 0.8%Zn, 0.7%
Zr, 0.4%Al, 6% heavy rare earth element, surplus are Mg and inevitable impurity.Wherein heavy rare earth element is Y and Gd, matter
Amount percentage is respectively 2% and 4%, and the mass ratio of Y and Gd are 1：2.
Embodiment 4
The preparation method of the magnesium-rare earth of the present embodiment, includes the following steps：
(1) it is calculated separately according to the proportioning in embodiment 3 and weighs the pure magnesium of raw material, fine aluminium, pure zinc, magnesium neodymium intermediate alloy, magnesium
Yttrium intermediate alloy, magnesium gadolinium intermediate alloy and Mg-Zr intermediate alloy；
(2) in CO2And SF6It is mixed gas protected under, the pure magnesium after 2h will be preheated at 200 DEG C, fine aluminium, pure zinc are put successively
Enter and melted into corundum crucible, obtains magnalium zinc molten metal；
(3) in CO2And SF6It is mixed gas protected under, be added at 200 DEG C when magnalium zinc molten metal is heated to 670 DEG C
The magnesium neodymium intermediate alloy fusing after 2h is preheated, magnalium zinc neodymium molten metal is obtained；
(4) in CO2And SF6It is mixed gas protected under, be added 200 when magnalium zinc neodymium molten metal is warming up to 690 DEG C
DEG C preheating 2h after magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy and Mg-Zr intermediate alloy, keep the temperature 6min, after alloy all fusing after
Surface scum is removed, stops heating after temperature is warming up to 710 DEG C, 7min is stood, obtains magnesium alloy melt；
(5) it when magnesium alloy melt temperature is down to 680 DEG C, is cast in steel die, obtains cast alloy；
(6) obtained cast alloy is subjected to solution treatment and ageing treatment：The temperature of solution treatment is 515 DEG C, processing
Time is 7h；The temperature of ageing treatment is 210 DEG C, and processing time is 8h to get magnesium-rare earth.
Embodiment 5
The magnesium-rare earth of the present embodiment, consists of the following mass percentage components：8.5%Nd, 0.6%Zn, 0.9%
Zr, 0.3%Al, 5.1% heavy rare earth element, surplus are Mg and inevitable impurity.Wherein heavy rare earth element is Y and Gd,
Mass percent is respectively 1.7% and 3.4%, and the mass ratio of Y and Gd are 1：2.
Embodiment 6
The preparation method of the magnesium-rare earth of the present embodiment, includes the following steps：
(1) it is calculated separately according to the proportioning in embodiment 5 and weighs the pure magnesium of raw material, fine aluminium, pure zinc, magnesium neodymium intermediate alloy, magnesium
Yttrium intermediate alloy, magnesium gadolinium intermediate alloy and Mg-Zr intermediate alloy；
(2) in CO2And SF6It is mixed gas protected under, pure magnesium, fine aluminium, pure zinc after 1h will be preheated at 220 DEG C, will be sequentially placed into
To being melted in corundum crucible, magnalium zinc molten metal is obtained；
(3) in CO2And SF6It is mixed gas protected under, be added at 220 DEG C when magnalium zinc molten metal is heated to 680 DEG C
The magnesium neodymium intermediate alloy fusing after 1h is preheated, magnalium zinc neodymium molten metal is obtained；
(4) in CO2And SF6It is mixed gas protected under, be added 220 when magnalium zinc neodymium molten metal is warming up to 700 DEG C
DEG C preheating 1h after magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy and Mg-Zr intermediate alloy, keep the temperature 5min, after alloy all fusing after go
Except surface scum, stop heating after temperature is warming up to 720 DEG C, stands 7min, obtain magnesium alloy melt；
(5) it when magnesium alloy melt temperature is down to 670 DEG C, is cast in steel die, obtains cast alloy；
(6) obtained cast alloy is subjected to solution treatment and ageing treatment：The temperature of solution treatment is 515 DEG C, processing
Time is 7h；The temperature of ageing treatment is 220 DEG C, and processing time is 9h to get magnesium-rare earth.
Embodiment 7
The magnesium-rare earth of the present embodiment, consists of the following mass percentage components：8.5%Nd, 0.5%Zn, 0.6%
Zr, 0.4%Al, 4.5% heavy rare earth element, surplus are Mg and inevitable impurity.Wherein heavy rare earth element is Y and Gd,
Mass percent is respectively 1.5% and 3.0%, and Y is 1 with Gd adding proportions：2.
Embodiment 8
The preparation method of the magnesium-rare earth of the present embodiment, includes the following steps：
(1) it is calculated separately according to the proportioning in embodiment 7 and weighs the pure magnesium of raw material, fine aluminium, pure zinc, magnesium neodymium intermediate alloy, magnesium
Yttrium intermediate alloy, magnesium gadolinium intermediate alloy and Mg-Zr intermediate alloy；
(2) in CO2And SF6It is mixed gas protected under, the pure magnesium after 3h will be preheated at 220 DEG C, fine aluminium, pure zinc are put successively
Enter and melted into corundum crucible, obtains magnalium zinc molten metal；
(3) in CO2And SF6It is mixed gas protected under, be added at 220 DEG C when magnalium zinc molten metal is heated to 680 DEG C
The magnesium neodymium intermediate alloy fusing after 3h is preheated, magnalium zinc neodymium molten metal is obtained；
(4) in CO2And SF6It is mixed gas protected under, be added 220 when magnalium zinc neodymium molten metal is warming up to 700 DEG C
DEG C preheating 3h after magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy and Mg-Zr intermediate alloy, keep the temperature 5min, after alloy all fusing after
Surface scum is removed, stops heating after temperature is warming up to 720 DEG C, 5min is stood, obtains magnesium alloy melt；
(5) it when magnesium alloy melt temperature is down to 680 DEG C, is cast in steel die, obtains cast alloy；
(6) obtained cast alloy is subjected to solution treatment and ageing treatment：The temperature of solution treatment is 520 DEG C, processing
Time is 8h；The temperature of ageing treatment is 210 DEG C, and processing time is 10h to get magnesium-rare earth.
Embodiment 9
The magnesium-rare earth of the present embodiment, consists of the following mass percentage components：8.3%Nd, 0.7%Zn, 0.8%
Zr, 0.4%Al, 4.8% heavy rare earth element, surplus are Mg and inevitable impurity.Wherein heavy rare earth element is Y and Gd,
Mass percent is respectively 1.2% and 3.6%, and wherein Y is 1 with Gd adding proportions：3.
Embodiment 10
The preparation method of the magnesium-rare earth of the present embodiment, includes the following steps：
(1) it is calculated separately according to the proportioning in embodiment 9 and weighs the pure magnesium of raw material, fine aluminium, pure zinc, magnesium neodymium intermediate alloy, magnesium
Yttrium intermediate alloy, magnesium gadolinium intermediate alloy and Mg-Zr intermediate alloy；
(2) in CO2And SF6It is mixed gas protected under, the pure magnesium after 3h will be preheated at 220 DEG C, fine aluminium, pure zinc are put successively
Enter and melted into corundum crucible, obtains magnalium zinc molten metal；
(3) in CO2And SF6It is mixed gas protected under, be added at 220 DEG C when magnalium zinc molten metal is heated to 680 DEG C
The magnesium neodymium intermediate alloy fusing after 3h is preheated, magnalium zinc neodymium molten metal is obtained；
(4) in CO2And SF6It is mixed gas protected under, be added 220 when magnalium zinc neodymium molten metal is warming up to 700 DEG C
DEG C preheating 3h after magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy and Mg-Zr intermediate alloy, keep the temperature 5min, after alloy all fusing after
Surface scum is removed, stops heating after temperature is warming up to 720 DEG C, 5min is stood, obtains magnesium alloy melt；
(5) it when magnesium alloy melt temperature is down to 680 DEG C, is cast in steel die, obtains cast alloy；
(6) obtained cast alloy is subjected to solution treatment and ageing treatment：The temperature of solution treatment is 520 DEG C, processing
Time is 7h；The temperature of ageing treatment is 210 DEG C, and processing time is 9h to get magnesium-rare earth.Test example 1
Room temperature and 200 DEG C of Mechanics Performance Testings are carried out to the magnesium alloy in above-described embodiment, Mechanics Performance Testing is according to state
Family standard GB6397-86《Metal stretching experimental sample》It is processed test, test equipment is (SHIMADZU) AG-I 250kN
Accurate universal testing machine stretching-machine, tensile speed 1mm/min.Test result is as shown in table 1.
The room temperature and drawing by high temperature mechanical property of 1 magnesium alloy of table
By 1 content of table it is found that magnesium-rare earth room temperature tensile 279~291MPa of intensity of present invention gained, yield strength
For 214~233MPa, elongation is 6.4~7.8%；200 DEG C of tensile strength be 217~239MPa, yield strength be 193~
209MPa, elongation is 10.4~12.5%, and compared with room temperature, mechanical behavior under high temperature reduction amplitude is small, which has excellent
Room temperature and mechanical behavior under high temperature.
Test example 2
Burning point test method：Magnesium alloy is cut into the cylindrical sample that specification is Φ 15mm × 5mm, sample is placed in 450
DEG C resistance furnace in carry out burning point test, control furnace temperature heating rate be 5 DEG C/min, obtain specimen surface temperature with heating when
Between curve, when there is inflection point in the homologous thread of specimen surface temperature and heating-up time, at this time magnesium alloy sample generate white cigarette,
Combustion phenomena has occurred, the temperature corresponding to the point of inflexion on a curve is the burning point of the magnesium alloy at this time.Test result is shown in Table 2.
The burning point of 2 magnesium alloy of table
| Project | Burning point DEG C |
| Embodiment 1 | 804 |
| Embodiment 3 | 799 |
| Embodiment 5 | 797 |
| Embodiment 7 | 809 |
| Embodiment 9 | 792 |
As can be seen from Table 2, the burning point of the embodiment of the present invention magnesium alloy is higher, reaches as high as 809 DEG C, illustrates the alloy
With excellent fire-retardant and high temperature oxidation resistance.
Claims (9)
1. a kind of magnesium-rare earth, which is characterized in that consist of the following mass percentage components：8.0~8.5%Nd, 0.5~
0.9%Zn, 0.6~0.9%Zr, 0.3~0.5%Al, 4.5~6% heavy rare earth elements, surplus be Mg and inevitably it is miscellaneous
Matter；The heavy rare earth element is that Y is mixed with the arbitrary mass ratio of Gd.
2. magnesium-rare earth according to claim 1, it is characterised in that：The mass ratio of the Y and Gd is 1：1~3.
3. magnesium-rare earth according to claim 2, it is characterised in that：The mass ratio of the Y and Gd is 1：2.
4. a kind of preparation method of magnesium-rare earth as described in claim 1, which is characterized in that include the following steps：
(1) under protective atmosphere, magnalium zinc molten metal is prepared；
(2) under protective atmosphere, magnesium neodymium intermediate alloy is added into magnalium zinc metallic solution, it is molten that fusing prepares magnalium zinc neodymium metal
Liquid；
(3) under protective atmosphere, into magnalium zinc neodymium molten metal, the raw material magnesium alloy containing yttrium, gadolinium, zirconium is added, prepared by fusing
Magnesium alloy melt；
(4) under protective atmosphere, magnesium alloy melt is cast, cast alloy is obtained；
(5) solution treatment and ageing treatment are carried out to get magnesium-rare earth to cast alloy.
5. the preparation method of magnesium-rare earth according to claim 4, it is characterised in that：Magnesium aluminum zinc metal in step (2)
Melt temperature is 670~680 DEG C.
6. the preparation method of magnesium-rare earth according to claim 4, it is characterised in that：Magnalium zinc neodymium gold in step (3)
It is 690~700 DEG C to belong to melt temperature.
7. the preparation method of magnesium-rare earth according to claim 4, it is characterised in that：Magnesium closes before casting in step (4)
Golden melt is 670~680 DEG C.
8. the preparation method of magnesium-rare earth according to claim 4, it is characterised in that：The solid solution temperature is
510~520 DEG C, processing time is 6~8h.
9. the preparation method of magnesium-rare earth according to claim 4, it is characterised in that：The aging temperature is
200~220 DEG C, processing time is 8~10h.
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Cited By (3)
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| CN111621658A (en) * | 2020-07-22 | 2020-09-04 | 中国兵器工业第五九研究所 | Method for preparing melt of rare earth-containing AZ magnesium alloy |
| CN114921701A (en) * | 2022-05-24 | 2022-08-19 | 洛阳理工学院 | Rare earth magnesium alloy and preparation method thereof |
| WO2024066022A1 (en) * | 2022-09-28 | 2024-04-04 | 广东汇天航空航天科技有限公司 | Rare earth-alkaline earth element compounded magnesium-based alloy and preparation method therefor |
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|---|---|---|---|---|
| CN111621658A (en) * | 2020-07-22 | 2020-09-04 | 中国兵器工业第五九研究所 | Method for preparing melt of rare earth-containing AZ magnesium alloy |
| CN114921701A (en) * | 2022-05-24 | 2022-08-19 | 洛阳理工学院 | Rare earth magnesium alloy and preparation method thereof |
| WO2024066022A1 (en) * | 2022-09-28 | 2024-04-04 | 广东汇天航空航天科技有限公司 | Rare earth-alkaline earth element compounded magnesium-based alloy and preparation method therefor |
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| CN108715964B (en) | 2019-10-15 |
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