CN104152771B - Silver and rare earth-containing high-strength heat-resistant magnesium alloy and preparation method thereof - Google Patents
Silver and rare earth-containing high-strength heat-resistant magnesium alloy and preparation method thereof Download PDFInfo
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- CN104152771B CN104152771B CN201410364954.0A CN201410364954A CN104152771B CN 104152771 B CN104152771 B CN 104152771B CN 201410364954 A CN201410364954 A CN 201410364954A CN 104152771 B CN104152771 B CN 104152771B
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Abstract
The invention relates to a silver and rare earth-containing high-strength heat-resistant magnesium alloy and a preparation method thereof, belonging to the technical field of an alloy material and aiming at realizing the high strength effect at a high temperature of the alloy. According to the silver and rare earth-containing high-strength heat-resistant magnesium alloy and the preparation method thereof, the magnesium alloy comprises the following components in percentage by mass: 6.0wt%-10wt% of Gd, 2.0wt%-4.0wt% of Sm, 0.5wt%-2.5wt% of Nd, 0.3wt%-1.5wt% of Ag, 0.4wt%-0.8wt% of Zr and the balance of Mg. The method comprises the following steps: preheating, melting and thermal-treating the raw materials, to obtain the corresponding silver and rare earth-containing high-strength heat-resistant magnesium alloy. The magnesium alloy has the effect of being high in heat-resistant strength at a high temperature.
Description
Technical field
The present invention relates to a kind of argentiferous rare-earth high-strength heat-resisting magnesium alloy and preparation method thereof, belong to alloy material technology neck
Domain.
Background technology
Magnesium alloy is current relatively lighter metal material, has higher specific strength and a specific stiffness, good diamagnetism, electricity
The advantages of negativity, thermal conductivity, absorb shock resistance and machinability, but, the deficiency of magnesium alloy strength and heat resistance not good tight
Hinder the paces that magnesium alloy substitutes the materials such as aluminium alloy in Aero-Space, military project and other industry again.
The performance of existing heat resistance magnesium alloy cannot exceed aluminium alloy, on the one hand relevant with performance of magnesium itself, the opposing party
Face is that the heat resistance of magnesium material needs to be excavated.Existing heat resistance magnesium alloy mainly enters from restriction dislocation motion and strengthening crystal boundary
Hand.The main purpose realizing raising magnesium alloy heat resistance and high-temerature creep drag by following means：(1) introduce heat endurance
The second high phase；(2) reduce diffusion rate in magnesium matrix for the element；(3) grain boundary structure state and tissue morphology are improved.Institute
Have in alloying element, rare earth is to improve the maximally effective alloying element of magnesium alloy heat resistance, main cause is suitable rare earth unit
, in the magnesium alloy in addition to degasification, removal of impurities, improving casting fluidity, corrosion resisting property, most of rare earth element is in magnesium simultaneously for element
There is larger solid solubility limit, and with temperature drop, solid solubility drastically reduces, and can obtain larger degree of supersaturation, from
And in subsequent ag(e)ing process diffusion-precipitation, high-melting-point rare earth compound phase.Rare earth element not only can crystal grain thinning, carry
High room temperature strength, and it is distributed in transgranular and crystal boundary (mainly crystal boundary) disperse, high-melting-point rare earth compound, in high temperature
Remain to the transgranular dislocation of pinning and Grain Boundary Sliding, thus improve the elevated temperature strength of magnesium alloy, (wherein RE is rare earth unit to RE simultaneously
Element) diffusion rate in magnesium matrix for the element is slower, and this makes Mg-RE alloy be suitable to long-term work under higher temperature environment.
For example Mg-Gd system alloy is important heat-resisting alloy system, has higher elevated temperature strength and excellent croop property, currently in
At 200～300 DEG C, the Magnesium Alloys Components of long-term work are Mg-RE system alloy.But existing heat-resisting alloy middle rare earth is (main
If heavy rare earth Gd) content commonly higher, result in the expensive of heat resistance magnesium alloy, have impact on to a certain extent its popularization
Application, and existing be mainly in view of the invigoration effect to magnesium for the rare earth element, more consider solid solutions in magnesium for the rare earth element
Change intensity and thinning effect.As Chinese patent application (publication number：CN1962914A) disclose a kind of cast magnesium alloy containing rare-earth,
This rare earth cast magnesium alloy includes 6wt%～15wt%Gd；2wt%～6wt%Sm；0.35wt%～0.8wt%Zr；Balance of
Magnesium and impurity, the total content of impurity Si, Fe, Cu and Ni is less than 0.02%.Although it has certain heat resistance, it is with temperature
, also with reduction, during high temperature, intensity effect is not good for the rising high-temperature capability of degree.And for example Chinese patent (Authorization Notice No.：
101532106B) disclose a kind of heat-resistant cast rare earth magnesium alloy, this magnesium alloy includes 7～14%Gd, 2～5%Y, 0.3～
5%, Sm, 0.2～0.6%Zr, impurity element S i, Fe, Cu and Ni total amount is less than 0.02%, balance of Mg.Although it has relatively
Good heat resistance, but the too high levels (up to 14%) of heavy rare earth element Gd therein lead to the problem of high cost,
And it mainly uses ageing strengthening in the solid solution in magnesium for the Gd and solid solution strengthening effect, and the Rare Earth Y by adding and
The balance phase that Sm is formed with magnesium, thus reaching the strengthening effect of room temperature and mechanical behavior under high temperature, overall rare-earth usage is too high, no
The problems such as beneficial to reduces cost.
Content of the invention
The present invention is directed to above problems of the prior art, provides argentiferous rare-earth high-strength heat-resisting magnesium alloy and its preparation
Method, the technical problem of solution realizes the high effect of strength character during alloy high-temp.
An object of the present invention technical scheme is that, a kind of argentiferous rare earth high-strength heat resistant magnesium closes
Gold, this magnesium alloy includes the mass percent of following component：
Gd：6.0wt%～10wt%；Sm：2.0wt%～4.0wt%；Nd：0.5wt%～2.5wt%, Ag：0.3wt%
～1.5wt%；Zr：0.4wt%～0.8wt%；Balance of Mg.
The argentiferous rare-earth high-strength heat-resisting magnesium alloy of the present invention, is the first component using Gd, Gd is when 200 DEG C in Mg solid solution
In solid solubility be 3.8%, in order to ensure ageing strengthening and the solid solution strengthening effect of alloy, the content of Gd is not less than 6%, but
In order to avoid alloying component and density increase too many and alloy embrittlement problem, the addition of Gd is not higher than 10wt%, adopts
Sm is the second component, and Sm reduces solid solubility in Mg for the Gd, increased the Precipitation strengthening effect of Gd, and Sm and magnesium generation
Balance is mutually Mg41Sm5(fusing point is 542 DEG C), enables the invigoration effect of matrix to remain to higher temperature；On the other hand, Sm
Addition be additionally contemplates that the non-rare earth Ag element of addition, the atomic radius of Ag differs 11% with Mg, after being solid-solution in Mg,
Magnesium matrix distortion of lattice is larger, it is possible to increase higher Intensive intervention effect, and Ag element be added to so that alloy is formed
The hexagonal structure Ag of the heat endurance of disperse educt good (Tm=1245 DEG C)3Sm2Phase, forms crystal grain thinning, carries heavy alloyed resistance to height
Warm intensity, meanwhile, the Ag element of addition can be solid-solution in β ' precipitation strength phase, increase β ' phase high-temperature stability, effectively improve
Alloy high-temp intensity, the therefore addition of rare earth element Sm are complementary with the addition of Ag element, and both each other can
Enough play synergy.With existing Mg element is strengthened using rare earth element compared with, present invention is equally capable to reaching preferably
Elevated temperature strength performance.The addition of Zr element is as grain refiner, for putting forward heavy alloyed toughness and the technique improving alloy
Performance, and the present invention also can play synergy, Mg by adding between Nd element and Ag element12Nd phase tends to disperse and divides
Cloth, thus realize putting forward heavy alloyed high temperature resistant strengthening effect.
In above-mentioned argentiferous rare-earth high-strength heat-resisting magnesium alloy, preferably, the mass percent of described Ag is 0.5wt%
～1.2wt%.Further preferred, the mass percent of described Ag is 0.6wt%～0.8wt%.
In above-mentioned argentiferous rare-earth high-strength heat-resisting magnesium alloy, preferably, the mass percent of described Sm is 2.5wt%
～3.0wt%.
In above-mentioned argentiferous rare-earth high-strength heat-resisting magnesium alloy, preferably, the mass percent of described Gd is 6.0wt%
～6.5wt%.Relatively costly due to heavy rare earth Gd element, the present invention passes through to add Ag element in alloying element, makes to play
Synergy, thus ensure that the high temperature strength performance being to ensure that alloy using the Gd reducing content.
In above-mentioned argentiferous rare-earth high-strength heat-resisting magnesium alloy, preferably, the percent mass of described Ag/ (Gd+Sm+Nd)
The ratio of number is 0.08～0.10.By controlling the ratio of the mass percent summation of Ag and three kinds of rare-earth Gd+Sm+Nd, Neng Gougeng
Effectively improve the resistance to elevated temperatures of the alloy of the present invention.
The second object of the present invention technical scheme is that, a kind of argentiferous rare earth high-strength heat resistant magnesium closes
The preparation method of gold, this magnesium alloy includes the mass percent of following component：
Gd：6.0wt%～10wt%；Sm：2.0wt%～4.0wt%；Nd：0.5wt%～2.5wt%, Ag：0.3wt%
～1.5wt%；Zr：0.4wt%～0.8wt%；Balance of Mg；
The preparation method of above-mentioned magnesium alloy comprises the following steps：
A, pure magnesium, intermediate alloy Mg-Nd, Mg-Gd, Mg-Sm and Mg-Zr are preheated；
B, pure magnesium put into melted in smelting furnace after, then be warming up to 710 DEG C～730 DEG C add intermediate alloy Mg-Nd,
Mg-Gd, Mg-Sm and fine silver, then, then be warming up to 740 DEG C～775 DEG C add intermediate alloy Mg-Zr melted；
C, to be melted after, remove surface scum, refining, cast after, obtain cast alloy, cast alloy carried out at heat
Reason, obtains argentiferous rare-earth high-strength heat-resisting magnesium alloy.
In the preparation method of above-mentioned argentiferous rare-earth high-strength heat-resisting magnesium alloy, preferably, at preheating described in step A
The temperature of reason is 110 DEG C～150 DEG C.
In the preparation method of above-mentioned argentiferous rare-earth high-strength heat-resisting magnesium alloy, preferably, pouring described in step C
Temperature is 690 DEG C～720 DEG C.
In the preparation method of above-mentioned argentiferous rare-earth high-strength heat-resisting magnesium alloy, preferably, being heat-treated described in step C
It is specially：
Described cast alloy is carried out solutionizing process under 505 DEG C～555 DEG C of temperature conditionss, then again at 185 DEG C
Carry out Ageing Treatment under the conditions of at a temperature of～245 DEG C.
In sum, the present invention compared with prior art has advantages below：
Argentiferous rare-earth high-strength heat-resisting magnesium alloy of the present invention, by improving to alloying component and percentage composition, by
Add in alloy and hexagonal structure Ag between Ag element, and Sm element, can be formed3Sm2Phase, forms crystal grain thinning, carries heavy alloyed
High temperature strength, meanwhile, the Ag element of addition can be solid-solution in β ' precipitation strength phase, increases β ' phase high-temperature stability, effectively
Improve alloy high-temp intensity, and by adding Nd element, make to play complementary effect between each metallic element composition.
By the improvement to alloying component, the content of heavy rare earth Gd in the alloy of the present invention is made to reduce, thus on the basis ensureing quality
On realize the effect of reduces cost.The method of the present invention has process is simple, easily operated effect.
Specific embodiment
Below by specific embodiment, technical scheme is described in further detail, but the present invention is simultaneously
It is not limited to these embodiments.
Embodiment 1
The argentiferous rare-earth high-strength heat-resisting magnesium alloy of the present embodiment is made up of the mass percent of following component：
Gd：6.0wt%；Sm：2.0wt%；Nd：2.0wt%, Ag：0.3wt%；Zr：0.4wt%；Balance of Mg and can not
The impurity avoiding, the total amount of its impurity element S i, Fe, Cu and Ni is less than 0.025%.
Above-mentioned argentiferous rare-earth high-strength heat-resisting magnesium alloy can be prepared using following methods：
According to mentioned component alloyage raw material, its founding is:Using corundum crucible alloying.
First by pure magnesium, intermediate alloy Mg-Gd, Mg-Nd, Mg-Sm and Mg-Zr are preheating to 120 DEG C；Then, will be through preheating
Pure magnesium be placed with CO2/SF6The melt in furnace of gas shield, after magnesium fusing, controls temperature to add Mg-Gd when 730 DEG C
Intermediate alloy is melted, and after Mg-Gd fusing, adds Mg-Sm, Mg-Nd intermediate alloy when magnesium liquid temp gos up to 725 DEG C
And fine silver, remove surface scum after all melting, be subsequently adding refining agent, be warmed up to 765 DEG C of insulations and refined, so for 10 minutes
Afterwards, then be warmed up to 775 DEG C add Mg-Zr intermediate alloys fusing, after fusing, standing, poured after molten metal is cooled to 700 DEG C
Casting, casting adopts water cooling mold, obtains cast alloy Mg-Gd-Sm-Nd-Ag-Zr, then the cast alloy obtaining is carried out at heat
Manage, the Technology for Heating Processing of described alloy is：Carry out solution treatment 8 hours at 525 DEG C, then carry out isothermal aging at 220 DEG C again
Process 18 hours, obtain the argentiferous rare-earth high-strength heat-resisting magnesium alloy of the present invention.
The room temperature tensile intensity of the argentiferous rare-earth high-strength heat-resisting magnesium alloy that the present embodiment obtains is 283MPa, 200 DEG C anti-
Tensile strength is 305MPa, and 250 DEG C of tensile strength is 318MPa, and 300 DEG C of tensile strength is 226MPa.
Embodiment 2
The argentiferous rare-earth high-strength heat-resisting magnesium alloy of the present embodiment is made up of the mass percent of following component：
Gd：6.0wt%；Sm：3.0wt%；Nd：2.5wt%, Ag：1.5wt%；Zr：0.8wt%；Balance of Mg and can not
The impurity avoiding, the total amount of its impurity element S i, Fe, Cu and Ni is less than 0.025%.
Above-mentioned argentiferous rare-earth high-strength heat-resisting magnesium alloy can be prepared using following methods：
According to mentioned component alloyage raw material, its founding is:Using corundum crucible alloying.
First by pure magnesium, intermediate alloy Mg-Gd, Mg-Nd, Mg-Sm and Mg-Zr are preheating to 110 DEG C；Then, will be through preheating
Pure magnesium be placed with CO2/SF6The melt in furnace of gas shield, after magnesium fusing, controls temperature to add Mg-Gd when 710 DEG C
Intermediate alloy is melted, and after Mg-Gd fusing, adds Mg-Sm, Mg-Nd intermediate alloy when magnesium liquid temp gos up to 710 DEG C
And fine silver, remove surface scum after all melting, be subsequently adding refining agent, be warmed up to 730 DEG C of insulations and refined, so for 10 minutes
Afterwards, then be warmed up to 740 DEG C add Mg-Zr intermediate alloys fusing, after fusing, standing, poured after molten metal is cooled to 720 DEG C
Casting, casting adopts water cooling mold, obtains cast alloy Mg-Gd-Sm-Nd-Ag-Zr, then the cast alloy obtaining is carried out at heat
Manage, the Technology for Heating Processing of described alloy is：Carry out solution treatment 8 hours at 555 DEG C, then carry out isothermal aging at 185 DEG C again
Process 24 hours, obtain the argentiferous rare-earth high-strength heat-resisting magnesium alloy of the present invention.
The room temperature tensile intensity of the argentiferous rare-earth high-strength heat-resisting magnesium alloy that the present embodiment obtains is 290MPa, 200 DEG C anti-
Tensile strength is 315MPa, and 250 DEG C of tensile strength is 325MPa, and 300 DEG C of tensile strength is 246MPa.
Embodiment 3
The argentiferous rare-earth high-strength heat-resisting magnesium alloy of the present embodiment is made up of the mass percent of following component：
Gd：8.6wt%；Sm：2.5wt%；Nd：0.5wt%, Ag：1.0wt%；Zr：0.6wt%；Balance of Mg and can not
The impurity avoiding, the total amount of its impurity element S i, Fe, Cu and Ni is less than 0.025%.
Above-mentioned argentiferous rare-earth high-strength heat-resisting magnesium alloy can be prepared using following methods：
According to mentioned component alloyage raw material, its founding is:Using corundum crucible alloying.
First by pure magnesium, intermediate alloy Mg-Gd, Mg-Nd, Mg-Sm and Mg-Zr are preheating to 150 DEG C；Then, will be through preheating
Pure magnesium be placed with CO2/SF6The melt in furnace of gas shield, after magnesium fusing, controls temperature to add Mg-Gd when 725 DEG C
Intermediate alloy is melted, and after Mg-Gd fusing, adds Mg-Sm, Mg-Nd intermediate alloy when magnesium liquid temp gos up to 720 DEG C
And fine silver, remove surface scum after all melting, be subsequently adding refining agent, be warmed up to 740 DEG C of insulations and refined, so for 10 minutes
Afterwards, then be warmed up to 755 DEG C add Mg-Zr intermediate alloys fusing, after fusing, standing, poured after molten metal is cooled to 690 DEG C
Casting, casting adopts water cooling mold, obtains cast alloy Mg-Gd-Sm-Nd-Ag-Zr, then the cast alloy obtaining is carried out at heat
Manage, the Technology for Heating Processing of described alloy is：Carry out solution treatment 12 hours at 505 DEG C, then carry out isothermal aging at 245 DEG C again
Process 18 hours, obtain the argentiferous rare-earth high-strength heat-resisting magnesium alloy of the present invention.
The room temperature tensile intensity of the argentiferous rare-earth high-strength heat-resisting magnesium alloy that the present embodiment obtains is 297MPa, 200 DEG C anti-
Tensile strength is 314MPa, and 250 DEG C of tensile strength is 328MPa, and 300 DEG C of tensile strength is 241MPa.
Embodiment 4
The argentiferous rare-earth high-strength heat-resisting magnesium alloy of the present embodiment is made up of the mass percent of following component：
Gd：6.0wt%；Sm：3.0wt%；Nd：1.5wt%, Ag：0.6wt%；Zr：0.5wt%；Balance of Mg and can not
The impurity avoiding, the total amount of its impurity element S i, Fe, Cu and Ni is less than 0.025%.
The preparation method of above-mentioned argentiferous rare-earth high-strength heat-resisting magnesium alloy is consistent with embodiment 1, repeats no more here.
The room temperature tensile intensity of the argentiferous rare-earth high-strength heat-resisting magnesium alloy that the present embodiment obtains is 298MPa, 200 DEG C anti-
Tensile strength is 317MPa, and 250 DEG C of tensile strength is 324MPa, and 300 DEG C of tensile strength is 231MPa.
Embodiment 5
The argentiferous rare-earth high-strength heat-resisting magnesium alloy of the present embodiment is made up of the mass percent of following component：
Gd：10wt%；Sm：2.0wt%；Nd：0.5wt%, Ag：0.7wt%；Zr：0.5wt%；Balance of Mg and can not
The impurity avoiding, the total amount of its impurity element S i, Fe, Cu and Ni is less than 0.025%.
The preparation method of above-mentioned argentiferous rare-earth high-strength heat-resisting magnesium alloy is consistent with embodiment 1, repeats no more here.
The room temperature tensile intensity of the argentiferous rare-earth high-strength heat-resisting magnesium alloy that the present embodiment obtains is 295MPa, 200 DEG C anti-
Tensile strength is 310MPa, and 250 DEG C of tensile strength is 325MPa, and 300 DEG C of tensile strength is 235MPa.
Embodiment 6
The argentiferous rare-earth high-strength heat-resisting magnesium alloy of the present embodiment is made up of the mass percent of following component：
Gd：6.5wt%；Sm：3.5wt%；Nd：2.0wt%, Ag：1.2wt%；Zr：0.4wt%；Balance of Mg and can not
The impurity avoiding, the total amount of its impurity element S i, Fe, Cu and Ni is less than 0.025%.
The preparation method of above-mentioned argentiferous rare-earth high-strength heat-resisting magnesium alloy is consistent with embodiment 1, repeats no more here.
The room temperature tensile intensity of the argentiferous rare-earth high-strength heat-resisting magnesium alloy that the present embodiment obtains is 290MPa, 200 DEG C anti-
Tensile strength is 308MPa, and 250 DEG C of tensile strength is 326MPa, and 300 DEG C of tensile strength is 244MPa.
Embodiment 7
The argentiferous rare-earth high-strength heat-resisting magnesium alloy of the present embodiment is made up of the mass percent of following component：
Gd：8.0wt%；Sm：3.0wt%；Nd：1.5wt%, Ag：0.5wt%；Zr：0.7wt%；Balance of Mg and can not
The impurity avoiding, the total amount of its impurity element S i, Fe, Cu and Ni is less than 0.025%.
The preparation method of above-mentioned argentiferous rare-earth high-strength heat-resisting magnesium alloy is consistent with embodiment 1, repeats no more here.
The room temperature tensile intensity of the argentiferous rare-earth high-strength heat-resisting magnesium alloy that the present embodiment obtains is 300MPa, 200 DEG C anti-
Tensile strength is 312MPa, and 250 DEG C of tensile strength is 317MPa, and 300 DEG C of tensile strength is 229MPa.
Specific embodiment described in the present invention is only explanation for example to present invention spirit.The affiliated technology of the present invention is led
The technical staff in domain can be made various modifications or supplement or replaced using similar mode to described specific embodiment
Generation, but the spirit without departing from the present invention or surmount scope defined in appended claims.
Although the present invention has been made a detailed description and has been cited with some specific embodiments, skilled to this area
For technical staff, as long as it is obvious for can making various changes without departing from the spirit and scope of the present invention or revise.
Claims (9)
1. a kind of argentiferous rare-earth high-strength heat-resisting magnesium alloy is it is characterised in that this magnesium alloy includes the mass percent of following component：
Gd：6.0wt%～10wt%；Sm：2.0wt%～4.0wt%；Nd：0.5wt%～2.5wt%；Ag：0.3wt%～
1.5wt%；Zr：0.4wt%～0.8wt%；Balance of Mg；The ratio of the mass percent of described Ag/ (Gd+Sm+Nd) is 0.08
～0.10.
2. according to claim 1 argentiferous rare-earth high-strength heat-resisting magnesium alloy it is characterised in that the mass percent of described Ag is
0.5wt%～1.2wt%.
3. according to claim 2 argentiferous rare-earth high-strength heat-resisting magnesium alloy it is characterised in that the mass percent of described Ag is
0.6wt%～0.8wt%.
4. according to claim 1-3 any one argentiferous rare-earth high-strength heat-resisting magnesium alloy it is characterised in that the matter of described Sm
Amount percentage is 2.5wt%～3.0wt%.
5. according to claim 1 argentiferous rare-earth high-strength heat-resisting magnesium alloy it is characterised in that the mass percent of described Gd is
6.0wt%～6.5wt%.
6. a kind of preparation method of argentiferous rare-earth high-strength heat-resisting magnesium alloy is it is characterised in that this magnesium alloy includes following component
Mass percent：
Gd：6.0wt%～10wt%；Sm：2.0wt%～4.0wt%；Nd：0.5wt%～2.5wt%；Ag：0.3wt%～
1.5wt%；Zr：0.4wt%～0.8wt%；Balance of Mg；And the ratio of the mass percent of described Ag/ (Gd+Sm+Nd) is
0.08～0.10；
The preparation method of above-mentioned magnesium alloy comprises the following steps：
A, pure magnesium, intermediate alloy Mg-Nd, Mg-Gd, Mg-Sm and Mg-Zr are preheated；
B, pure magnesium put into melted in smelting furnace after, then be warming up to 710 DEG C～730 DEG C add intermediate alloy Mg-Nd, Mg-Gd,
Mg-Sm and fine silver, then, then be warming up to 740 DEG C～775 DEG C add intermediate alloy Mg-Zr melted；
C, to be melted after, remove surface scum, refining, cast after, obtain cast alloy, cast alloy be heat-treated, obtain
To argentiferous rare-earth high-strength heat-resisting magnesium alloy.
7. according to claim 6 the preparation method of argentiferous rare-earth high-strength heat-resisting magnesium alloy it is characterised in that institute in step A
The temperature stating the pre-heat treatment is 110 DEG C～150 DEG C.
8. according to claim 6 or 7 preparation method of argentiferous rare-earth high-strength heat-resisting magnesium alloy it is characterised in that in step C
The temperature of described pouring is 690 DEG C～720 DEG C.
9. according to claim 6 or 7 preparation method of argentiferous rare-earth high-strength heat-resisting magnesium alloy it is characterised in that in step C
Described heat treatment is specially：
Described cast alloy is carried out solutionizing process under 505 DEG C～555 DEG C of temperature conditionss, then again 185 DEG C～245
Carry out Ageing Treatment under the conditions of at a temperature of DEG C.
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| CN107245619B (en) * | 2017-03-03 | 2018-08-10 | 中南大学 | A kind of strong high temperature resistant magnesium alloy of superelevation |
| CN107201473A (en) * | 2017-06-07 | 2017-09-26 | 深圳市威富通讯技术有限公司 | A kind of magnesium alloy and preparation method thereof, cavity body filter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962914A (en) * | 2006-12-07 | 2007-05-16 | 上海交通大学 | Cast magnesium alloy containing rare-earth and preparation method thereof |
| CN101463442A (en) * | 2009-01-15 | 2009-06-24 | 上海交通大学 | Casting magnesium alloy containing Ag and heavy rare earth and preparation thereof |
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| GB0323855D0 (en) * | 2003-10-10 | 2003-11-12 | Magnesium Elektron Ltd | Castable magnesium alloys |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962914A (en) * | 2006-12-07 | 2007-05-16 | 上海交通大学 | Cast magnesium alloy containing rare-earth and preparation method thereof |
| CN101463442A (en) * | 2009-01-15 | 2009-06-24 | 上海交通大学 | Casting magnesium alloy containing Ag and heavy rare earth and preparation thereof |
Non-Patent Citations (1)
| Title |
|---|
| Mg-Gd-Nd-Zr 系高强耐热镁合金组织与性能研究;郑开云;《中国博士学位论文全文数据库工程科技Ⅰ辑》;20110415(第04期);第14页第3段 * |
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