CN108048721A - A kind of heat-resistant antifriction magnesium alloy and preparation method thereof - Google Patents
A kind of heat-resistant antifriction magnesium alloy and preparation method thereof Download PDFInfo
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- CN108048721A CN108048721A CN201711333090.6A CN201711333090A CN108048721A CN 108048721 A CN108048721 A CN 108048721A CN 201711333090 A CN201711333090 A CN 201711333090A CN 108048721 A CN108048721 A CN 108048721A
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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
- C22C23/04—Alloys based on magnesium with zinc or cadmium 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
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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- 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
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
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Abstract
The invention discloses a kind of heat-resistant antifriction magnesium alloys and preparation method thereof, which includes the component of following weight percentage：0.5~2.0wt% of Zn 5.0~6.0wt%, Zr 0.3~0.9wt%, Nd, 0.05~0.1wt% of Y 1.0~2.5wt%, Ti 0.5~0.8wt%, B, surplus is Mg and inevitable impurity, and the mass percentage of inevitable impurity is no more than 0.03wt%.The present invention adds Nd, Ti and B on the basis of ZK60, can refining alloy crystal grain, the magnesium alloy formed have higher mechanical behavior under high temperature and wear-resisting property.
Description
Technical field
The invention belongs to technical field of alloy, are related to a kind of heat-resistant antifriction magnesium alloy and preparation method thereof.
Background technology
For magnesium alloy since density is small, specific strength and specific stiffness are high, and dimensional stability and thermal conductivity are high, and good mechanical property is
A kind of very attractive commercial lightweight structural material.In addition, magnesium is one of element that reserves are most abundant on the earth, it is
A small number of inexhaustible, nexhaustible metals resources, and be easily recycled.Therefore, largely using used for magnesium alloy in automobile and aviation
The important directions of future development of manufacturing when field works, can not only reach maximum weight loss effect, and can alleviate increasingly
Serious energy problem.
Magnesium alloy member on automobile at present is all substantially die casting, is mainly used for some housing components and loaded relatively light
Panel and stent.Magnesium alloy in auto industry largely using just having to realize that magnesium alloy parts non-hold by current
Power part is crossed over to secondary bearing member or bearing member, therefore to the performance requirement higher of magnesium alloy, and pass through the works such as forging, extruding or rolling
The wrought magnesium alloy product that skill is produced usually has higher intensity and fatigue life, and better ductility has casting magnesium
The excellent performance that alloy product can not substitute.Now, the development of magnesium alloy mainly endeavours development and application in high-strength, high-ductility, corrosion resistant
It loses and there is the wrought magnesium alloy of excellent formability energy.
In wrought magnesium alloy, magnesium-zinc-zirconium alloy (Mg-Zn-Zr) is as intensity highest one in existing commercial magnesium alloy
Kind, there is good plasticity and corrosion resistance, and be one of wrought magnesium alloy most widely used at present.Largely closed using ZK60 magnesium
Gold is following aerospace and the development trend of automobile manufacturing field.But ZK60 temperature-room type plasticities are poor, especially poor heat resistance, hot tearing
Tendency is big, and Magnesium Alloys Components need to bear the adverse circumstances such as high temperature, burn into alternating load during being on active service, long and long
It, Magnesium Alloys Components will germinate fatigue crack source on surface, and fatigue crack source continues to extend further to crackle, part
Fatigue rupture failure will occur；Therefore the use for being difficult to meet the use under high temperature resistant environment, especially aerospace field will
It asks, very big limitation is caused to the development of magnesium alloy.
The content of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, provide a kind of refining alloy crystal grain, have
Higher heat-resisting and wear-resisting property magnesium alloy and preparation method thereof.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of heat-resistant antifriction magnesium alloy includes the component of following weight percentage：Zn：5.0~6.0wt%, Zr 0.3
~0.9wt%, Nd 0.5~2.0wt%, Ti 0.05~0.1wt% of 0.5~0.8wt%, B, surplus is for Mg and unavoidably
Impurity, the mass percentage of inevitable impurity is no more than 0.03wt%.
Preferably, inevitable impurity includes Fe and Si.
Preferably, the component of following weight percentage is included：Zn：5.2~5.8wt%, Zr 0.4~0.8wt%, Nd
0.8~1.8wt%, Y 1.2~2.2wt%, Ti 0.06~0.09wt% of 0.6~0.8wt%, B, surplus is Mg and can not keep away
The impurity exempted from, the mass percentage of inevitable impurity are no more than 0.03wt%.
Preferably, the component of following weight percentage is included：Zn：5.3~5.7wt%, Zr 0.5~0.7wt%, Nd
1.0~1.5wt%, Y 1.5~2.0wt%, Ti 0.07~0.08wt% of 0.7~0.8wt%, B, surplus is Mg and can not keep away
The impurity exempted from, the mass percentage of inevitable impurity are no more than 0.03wt%.
Preferably, the component of following weight percentage is included：Zn：5.5wt%, Zr 0.6wt%, Nd 1.2wt%, Y
1.8wt%, Ti 0.7wt%, B 0.08wt%, surplus be Mg and inevitable impurity, the quality hundred of inevitable impurity
Content is divided to be no more than 0.03wt%.
The inventive concept total as one, the present invention also provides a kind of preparation method of above-mentioned wear-resisting magnesium alloy, including
Following steps：
(1) by heat-resistant antifriction magnesium alloy proportioning by pure magnesium ingot, pure zinc ingot, Mg-Nd intermediate alloys, Mg-Y intermediate alloys,
Mg-Ti intermediate alloys and B powder are preheated to 400 DEG C in an oven, keep the temperature 10~20min；In SF6+CO2It, will be pure under gas shield
Magnesium ingot, pure zinc ingot are put into crucible, the temperature-gradient method at a temperature of 350~550 DEG C, 550~750 DEG C, heat melting；Again to magnesium zinc
The Mg-Nd intermediate alloys, Mg-Y intermediate alloys, Mg-Ti intermediate alloys of preheating are added in melt, stirred 1 time, stirs every 20 minutes
It mixes 3~4 times, makes ingredient uniform；800~850 DEG C are warming up to, then adds the B powder of preheating, was stirred 1 time every 10 minutes, stirring 2
~3 times, make ingredient uniform；
(2) smelting agent removal impurity is added in；It is cooled to 730~740 DEG C and stands 30~40 minutes, after standing, salvage
Dross on surface of fusant；780~790 DEG C are warming up to again and stands 30~40 minutes, after standing, salvage dross on surface of fusant；
(3) when temperature drops to 650~700 DEG C, in SF6+CO2Under gas shield, in 200~300 DEG C of swage into
Row casting；The air-cooled, demoulding；
(4) ingot casting is machined out, ingot diameters are 100mm after turning；
(5) magnesium alloy ingot after machining is subjected to aging strengthening model；
(6) magnesium alloy ingot after aging strengthening model is subjected to hot extrusion, obtains the magnesium alloy rod of a diameter of 18mm.
Preferably, in the step (4), aging strengthening model temperature is 350~400 DEG C, the time for 18~for 24 hours.
Preferably, in the step (6), the technique of the hot extrusion is：Ingot casting preheating and extrusion cylinder temperature are equal before extruding
For 380 DEG C, when preheating 2 is small, extrusion temperature is 400 DEG C, and extrusion ratio is 20~40: 1, and extrusion speed is 0.6~1.0mm/s.
Preferably, Mg-Nd intermediate alloys are Mg-24wt%Nd intermediate alloys, and Mg-Y intermediate alloys are in Mg-30wt%Y
Between alloy.
Preferably, Mg-Ti intermediate alloys are Mg-30wt%Ti intermediate alloys.
Compared with prior art, the advantage of the invention is that：
The present invention adds Nd, Y, Ti and B on the basis of ZK60, and wherein Nd, Ti and Mg generates the very high binary chemical combination of fusing point
Object improves mechanical behavior under high temperature, after fixation rates, part of compounds in the presence of can play the role of pinning crystal boundary on crystal boundary
Be solid-solution in matrix and in timeliness in small and dispersed shape be precipitated, hinder base plastic deformation when dislocation motion, enhance matrix
So as to improve the mechanical behavior under high temperature of alloy.The addition of B is fined the particle in Magnesium Alloy, and more equal respectively
Even disperse can significantly reduce Nd, Y, Ti dosage, be conducive to improve the wearability of magnesium alloy, reduce production cost.Experimental data
After showing ZK60 additions Nd, Y, Ti and B provided by the invention, substantially refinement with uniformly, makes the high-temperature mechanics of magnesium alloy to crystal grain
It can greatly improve, expand it and required under high fever use environment, further expanded the use scope of ZK60.
Specific embodiment
Below in conjunction with specific preferred embodiment, the invention will be further described, but not thereby limiting the invention
Protection domain.
Embodiment 1：
A kind of heat-resistant antifriction magnesium alloy of the present invention includes the component of following weight percentage：Zn：5.5wt%, Zr
0.6wt%, Nd 1.2wt%, Y 1.8wt%, Ti 0.7wt%, B 0.08wt%, surplus be Mg and inevitable impurity,
The mass percentage of inevitable impurity is no more than 0.03wt%.
Specific preparation method is as follows：
(1) by the proportioning of heat-resistant antifriction magnesium alloy by pure magnesium ingot, pure zinc ingot, Mg-24wt%Nd intermediate alloys, Mg-
30wt%Y intermediate alloys, Mg-30wt%Ti intermediate alloys and B powder are preheated to 400 DEG C in an oven, keep the temperature 15min；In SF6+
CO2Under gas shield, pure magnesium ingot, pure zinc ingot are put into crucible, the temperature-gradient method at a temperature of 450 DEG C, 650 DEG C, heat melting；
The Mg-Nd intermediate alloys, Mg-Y intermediate alloys, Mg-Ti intermediate alloys of preheating are added in into magnesium zinc melt again, was stirred every 20 minutes
It mixes 1 time, stirs 3 times, make ingredient uniform；825 DEG C are warming up to, then adds the B powder of preheating, was stirred 1 time every 10 minutes, stirring 2
It is secondary, make ingredient uniform；
(2) smelting agent removal impurity is added in；It is cooled to 735 DEG C and stands 40 minutes, after standing, salvage bath surface and float
Slag；785 DEG C are warming up to again and stands 40 minutes, after standing, salvage dross on surface of fusant；
(3) when temperature drops to 675 DEG C, in SF6+CO2Under gas shield, cast in 250 DEG C of swage；It is empty
The cold, demoulding；
(4) ingot casting is machined out, ingot diameters are 100mm after turning；
(5) magnesium alloy ingot after machining is subjected to aging strengthening model 20h at 375 DEG C；
(6) magnesium alloy ingot after aging strengthening model is subjected to hot extrusion, the technique of hot extrusion is：Ingot casting preheating before extruding
It it is 380 DEG C with extrusion cylinder temperature, when preheating 2 is small, extrusion temperature is 400 DEG C, extrusion ratio 30: 1, extrusion speed 0.8mm/
S obtains the magnesium alloy rod of a diameter of 18mm.
Embodiment 2：
A kind of heat-resistant antifriction magnesium alloy of the present invention includes the component of following weight percentage：Zn 5.3wt%, Zr
0.7wt%, Nd 1.0wt%, Y 1.5wt%, Ti 0.7wt%, B 0.07wt%, surplus be Mg and inevitable impurity,
The mass percentage of inevitable impurity is no more than 0.03wt%.
Specific preparation method is as follows：
(1) by the proportioning of heat-resistant antifriction magnesium alloy by pure magnesium ingot, pure zinc ingot, Mg-24wt%Nd intermediate alloys, Mg-
30wt%Y intermediate alloys, Mg-30wt%Ti intermediate alloys and B powder are preheated to 400 DEG C in an oven, keep the temperature 15min；In SF6+
CO2Under gas shield, pure magnesium ingot, pure zinc ingot are put into crucible, the temperature-gradient method at a temperature of 350 DEG C, 600 DEG C, heat melting；
The Mg-Nd intermediate alloys, Mg-Y intermediate alloys, Mg-Ti intermediate alloys of preheating are added in into magnesium zinc melt again, was stirred every 20 minutes
It mixes 1 time, stirs 3 times, make ingredient uniform；800 DEG C are warming up to, then adds the B powder of preheating, was stirred 1 time every 10 minutes, stirring 3
It is secondary, make ingredient uniform；
(2) smelting agent removal impurity is added in；It is cooled to 730 DEG C and stands 30 minutes, after standing, salvage bath surface and float
Slag；780 DEG C are warming up to again and stands 30 minutes, after standing, salvage dross on surface of fusant；
(3) when temperature drops to 650 DEG C, in SF6+CO2Under gas shield, cast in 200 DEG C of swage；It is empty
The cold, demoulding；
(4) ingot casting is machined out, ingot diameters are 100mm after turning；
(5) magnesium alloy ingot after machining is subjected to aging strengthening model 22h at 350 DEG C；
(6) magnesium alloy ingot after aging strengthening model is subjected to hot extrusion, the technique of hot extrusion is：Ingot casting preheating before extruding
It it is 380 DEG C with extrusion cylinder temperature, when preheating 2 is small, extrusion temperature is 400 DEG C, extrusion ratio 25: 1, extrusion speed 0.6mm/
S obtains the magnesium alloy rod of a diameter of 18mm.
Embodiment 3：
A kind of heat-resistant antifriction magnesium alloy of the present invention includes the component of following weight percentage：Zn：5.7wt%, Zr
0.5wt%, Nd 1.5wt%, Y 2.0wt%, Ti 0.7wt%, B 0.08wt%, surplus be Mg and inevitable impurity,
The mass percentage of inevitable impurity is no more than 0.03wt%.
Specific preparation method is as follows：
(1) by the proportioning of heat-resistant antifriction magnesium alloy by pure magnesium ingot, pure zinc ingot, Mg-24wt%Nd intermediate alloys, Mg-
30wt%Y intermediate alloys, Mg-30wt%Ti intermediate alloys and B powder are preheated to 400 DEG C in an oven, keep the temperature 15min；In SF6+
CO2Under gas shield, pure magnesium ingot, pure zinc ingot are put into crucible, the temperature-gradient method at a temperature of 450 DEG C, 650 DEG C, heat melting；
The Mg-Nd intermediate alloys, Mg-Y intermediate alloys, Mg-Ti intermediate alloys of preheating are added in into magnesium zinc melt again, was stirred every 20 minutes
It mixes 1 time, stirs 4 times, make ingredient uniform；850 DEG C are warming up to, then adds the B powder of preheating, was stirred 1 time every 10 minutes, stirring 3
It is secondary, make ingredient uniform；
(2) smelting agent removal impurity is added in；It is cooled to 740 DEG C and stands 40 minutes, after standing, salvage bath surface and float
Slag；780 DEG C are warming up to again and stands 40 minutes, after standing, salvage dross on surface of fusant；
(3) when temperature drops to 700 DEG C, in SF6+CO2Under gas shield, cast in 300 DEG C of swage；It is empty
The cold, demoulding；
(4) ingot casting is machined out, ingot diameters are 100mm after turning；
(5) magnesium alloy ingot after machining is subjected to aging strengthening model 18h at 400 DEG C；
(6) magnesium alloy ingot after aging strengthening model is subjected to hot extrusion, the technique of hot extrusion is：Ingot casting preheating before extruding
It it is 380 DEG C with extrusion cylinder temperature, when preheating 2 is small, extrusion temperature is 400 DEG C, extrusion ratio 40: 1, extrusion speed 1.0mm/
S obtains the magnesium alloy rod of a diameter of 18mm.
Embodiment 4：
A kind of heat-resistant antifriction magnesium alloy of the present invention includes the component of following weight percentage：Zn：5.2wt%, Zr
0.8wt%, Nd 0.8wt%, Y 1.2wt%, Ti 0.8wt%, B 0.06wt%, surplus be Mg and inevitable impurity,
The mass percentage of inevitable impurity is no more than 0.03wt%.
Specific preparation method is as follows：
(1) by the proportioning of heat-resistant antifriction magnesium alloy by pure magnesium ingot, pure zinc ingot, Mg-24wt%Nd intermediate alloys, Mg-
30wt%Y intermediate alloys, Mg-30wt%Ti intermediate alloys and B powder are preheated to 400 DEG C in an oven, keep the temperature 15min；In SF6+
CO2Under gas shield, pure magnesium ingot, pure zinc ingot are put into crucible, the temperature-gradient method at a temperature of 500 DEG C, 700 DEG C, heat melting；
The Mg-Nd intermediate alloys, Mg-Y intermediate alloys, Mg-Ti intermediate alloys of preheating are added in into magnesium zinc melt again, was stirred every 20 minutes
It mixes 1 time, stirs 3 times, make ingredient uniform；850 DEG C are warming up to, then adds the B powder of preheating, was stirred 1 time every 10 minutes, stirring 2
It is secondary, make ingredient uniform；
(2) smelting agent removal impurity is added in；It is cooled to 730 DEG C and stands 35 minutes, after standing, salvage bath surface and float
Slag；790 DEG C are warming up to again and stands 35 minutes, after standing, salvage dross on surface of fusant；
(3) when temperature drops to 725 DEG C, in SF6+CO2Under gas shield, cast in 225 DEG C of swage；It is empty
The cold, demoulding；
(4) ingot casting is machined out, ingot diameters are 100mm after turning；
(5) magnesium alloy ingot after machining is subjected to aging strengthening model 20h at 360 DEG C；
(6) magnesium alloy ingot after aging strengthening model is subjected to hot extrusion, the technique of hot extrusion is：Ingot casting preheating before extruding
It it is 380 DEG C with extrusion cylinder temperature, when preheating 2 is small, extrusion temperature is 400 DEG C, extrusion ratio 22: 1, extrusion speed 0.7mm/
S obtains the magnesium alloy rod of a diameter of 18mm.
Embodiment 5：
A kind of heat-resistant antifriction magnesium alloy of the present invention includes the component of following weight percentage：Zn：5.8wt%, Zr
0.4wt%, Nd 0.8wt%, Y 2.2wt%, Ti 0.8wt%, B 0.06wt%, surplus be Mg and inevitable impurity,
The mass percentage of inevitable impurity is no more than 0.03wt%.
Specific preparation method is as follows：
(1) by the proportioning of heat-resistant antifriction magnesium alloy by pure magnesium ingot, pure zinc ingot, Mg-24wt%Nd intermediate alloys, Mg-
30wt%Y intermediate alloys, Mg-30wt%Ti intermediate alloys and B powder are preheated to 400 DEG C in an oven, keep the temperature 20min；In SF6+
CO2Under gas shield, pure magnesium ingot, pure zinc ingot are put into crucible, the temperature-gradient method at a temperature of 500 DEG C, 700 DEG C, heat melting；
The Mg-Nd intermediate alloys, Mg-Y intermediate alloys, Mg-Ti intermediate alloys of preheating are added in into magnesium zinc melt again, was stirred every 20 minutes
It mixes 1 time, stirs 4 times, make ingredient uniform；820 DEG C are warming up to, then adds the B powder of preheating, was stirred 1 time every 10 minutes, stirring 3
It is secondary, make ingredient uniform；
(2) smelting agent removal impurity is added in；It is cooled to 730 DEG C and stands 40 minutes, after standing, salvage bath surface and float
Slag；780 DEG C are warming up to again and stands 40 minutes, after standing, salvage dross on surface of fusant；
(3) when temperature drops to 700 DEG C, in SF6+CO2Under gas shield, cast in 300 DEG C of swage；It is empty
The cold, demoulding；
(4) ingot casting is machined out, ingot diameters are 100mm after turning；
(5) magnesium alloy ingot after machining is subjected to aging strengthening model 20h at 400 DEG C；
(6) magnesium alloy ingot after aging strengthening model is subjected to hot extrusion, the technique of hot extrusion is：Ingot casting preheating before extruding
It it is 380 DEG C with extrusion cylinder temperature, when preheating 2 is small, extrusion temperature is 400 DEG C, extrusion ratio 40: 1, extrusion speed 0.9mm/
S obtains the magnesium alloy rod of a diameter of 18mm.
Performance detection is carried out for the magnesium alloy of ZK60 to magnesium alloy obtained by above-described embodiment and the trade mark respectively, wherein stretching strong
Spend the method for experiment：Sample after fixation rates, according to standard GB/T 6397-86《Metal stretching experimental sample》Add
Work is into 5 times of standard tensile specimens：Tension test, rate of extension are carried out on Japanese Shimadzu AG-I250kN precision universal testing machines
For 1mm/min：During drawing by high temperature, 10 minutes are kept the temperature, then is stretched.
It is above-mentioned statistics indicate that, the tensile strength of magnesium alloy provided by the invention at a room temperature and a high temperature is better than ZK60, especially
Its at high temperature, tensile strength only reduces 20-30MPa, about 10-20%, and tensile strength and hardness are obviously improved；Greatly improve
The heat resistance and wearability of the ZK60 of plasticity difference.
The above is only the preferred embodiment of the application, any type of limitation is not done to the application, although this Shen
Please disclosed as above with preferred embodiment, however not to limit the application, any person skilled in the art is not taking off
In the range of technical scheme, make a little variation using the technology contents of the disclosure above or modification is equal to
Case study on implementation is imitated, is belonged in the range of technical solution.
Claims (10)
1. a kind of heat-resistant antifriction magnesium alloy, which is characterized in that include the component of following weight percentage：Zn：5.0~
6.0wt%, Zr 0.3~0.9wt%, Nd 0.5~2.0wt%, Y 1.0~2.5wt%, Ti 0.5~0.8wt%, B 0.05
~0.1wt%, surplus are Mg and inevitable impurity, and the mass percentage of inevitable impurity is no more than
0.03wt%.
2. heat-resistant antifriction magnesium alloy according to claim 1, which is characterized in that inevitable impurity includes Fe and Si.
3. heat-resistant antifriction magnesium alloy according to claim 1 or 2, which is characterized in that including following weight percentage
Component：Zn：5.2~5.8wt%, Zr 0.4~0.8wt%, Nd 0.8~1.8wt%, Y 1.2~2.2wt%, Ti 0.6~
0.06~0.09wt% of 0.8wt%, B, surplus are Mg and inevitable impurity, and the quality percentage of inevitable impurity contains
Amount is no more than 0.03wt%.
4. heat-resistant antifriction magnesium alloy according to claim 3, which is characterized in that include the group of following weight percentage
Point：Zn：5.3~5.7wt%, Zr 0.5~0.7wt%, Nd 1.0~1.5wt%, Y 1.5~2.0wt%, Ti 0.7~
0.07~0.08wt% of 0.8wt%, B, surplus are Mg and inevitable impurity, and the quality percentage of inevitable impurity contains
Amount is no more than 0.03wt%.
5. heat-resistant antifriction magnesium alloy according to claim 4, which is characterized in that include the group of following weight percentage
Point：Zn：5.5wt%, Zr 0.6wt%, Nd 1.2wt%, Y 1.8wt%, Ti 0.7wt%, B 0.08wt%, surplus Mg
With inevitable impurity, the mass percentage of inevitable impurity is no more than 0.03wt%.
6. a kind of preparation method of such as Claims 1 to 5 any one of them heat-resistant antifriction magnesium alloy, comprises the following steps：
(1) by the proportioning of heat-resistant antifriction magnesium alloy by pure magnesium ingot, pure zinc ingot, Mg-Nd intermediate alloys, Mg-Y intermediate alloys, Mg-Ti
Intermediate alloy and B powder are preheated to 400 DEG C in an oven, keep the temperature 10~20min；In SF6+CO2Under gas shield, by pure magnesium ingot,
Pure zinc ingot is put into crucible, the temperature-gradient method at a temperature of 350~550 DEG C, 550~750 DEG C, heats melting；Again to magnesium zinc melt
The middle Mg-Nd intermediate alloys, Mg-Y intermediate alloys, Mg-Ti intermediate alloys for adding in preheating, was stirred 1 time, stirring 3 every 20 minutes
~4 times, make ingredient uniform；800~850 DEG C are warming up to, then adds the B powder of preheating, was stirred 1 time every 10 minutes, stirring 2~3
It is secondary, make ingredient uniform；
(2) smelting agent removal impurity is added in；It is cooled to 730~740 DEG C and stands 30~40 minutes, after standing, salvage melt
Surface scum；780~790 DEG C are warming up to again and stands 30~40 minutes, after standing, salvage dross on surface of fusant；
(3) when temperature drops to 650~700 DEG C, in SF6+CO2Under gas shield, poured in 200~300 DEG C of swage
Casting；The air-cooled, demoulding；
(4) ingot casting is machined out, ingot diameters are 100mm after turning；
(5) magnesium alloy ingot after machining is subjected to aging strengthening model；
(6) magnesium alloy ingot after aging strengthening model is subjected to hot extrusion, obtains the magnesium alloy rod of a diameter of 18mm.
7. the preparation method of heat-resistant antifriction magnesium alloy according to claim 6, which is characterized in that in the step (4), when
It is 350~400 DEG C to imitate heat treatment temperature, the time for 18~for 24 hours.
8. the preparation method of heat-resistant antifriction magnesium alloy according to claim 7, which is characterized in that in the step (6), institute
The technique for stating hot extrusion is：Ingot casting preheating and extrusion cylinder temperature are 380 DEG C before extruding, when preheating 2 is small, extrusion temperature 400
DEG C, extrusion ratio is 20~40: 1, and extrusion speed is 0.6~1.0mm/s.
9. according to the preparation method of claim 6~8 any one of them heat-resistant antifriction magnesium alloy, which is characterized in that in Mg-Nd
Between alloy be Mg-24wt%Nd intermediate alloys, Mg-Y intermediate alloys be Mg-30wt%Y intermediate alloys.
10. the preparation method of heat-resistant antifriction magnesium alloy according to claim 9, which is characterized in that Mg-Ti intermediate alloys are
Mg-30wt%Ti intermediate alloys.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112239827A (en) * | 2020-10-29 | 2021-01-19 | 威海万丰镁业科技发展有限公司 | Low-heat-cracking-sensitivity high-strength-toughness Mg-Zn-Y-Nd-Ti-Zr cast magnesium alloy |
| CN112442621A (en) * | 2020-11-04 | 2021-03-05 | 长沙新材料产业研究院有限公司 | Magnesium alloy plate and preparation method thereof |
| CN112458349A (en) * | 2020-11-06 | 2021-03-09 | 重庆大学 | Low-rare earth high-strength wrought magnesium alloy containing neodymium and yttrium and preparation method thereof |
| CN112458348A (en) * | 2020-11-04 | 2021-03-09 | 长沙新材料产业研究院有限公司 | Magnesium alloy semicircular ring section bar and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457312A (en) * | 2009-01-04 | 2009-06-17 | 武汉理工大学 | Method for preparing Mg-Ti-B grain refiner for magnesium and magnesium alloy |
| CN104313427A (en) * | 2014-10-24 | 2015-01-28 | 陈唯锋 | Wear-resistant alloy material |
| CN105112752A (en) * | 2015-09-08 | 2015-12-02 | 张超 | Wear-resistant shock-absorbing alloy |
| CN106591653A (en) * | 2016-12-08 | 2017-04-26 | 新昌县宏胜机械有限公司 | Abrasion-resistant alloy material for machining fixtures and preparation method of alloy material |
| CN106834849A (en) * | 2016-12-22 | 2017-06-13 | 湘潭大学 | High strength heat resistant magnesium-rare earth |
-
2017
- 2017-12-13 CN CN201711333090.6A patent/CN108048721A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457312A (en) * | 2009-01-04 | 2009-06-17 | 武汉理工大学 | Method for preparing Mg-Ti-B grain refiner for magnesium and magnesium alloy |
| CN104313427A (en) * | 2014-10-24 | 2015-01-28 | 陈唯锋 | Wear-resistant alloy material |
| CN105112752A (en) * | 2015-09-08 | 2015-12-02 | 张超 | Wear-resistant shock-absorbing alloy |
| CN106591653A (en) * | 2016-12-08 | 2017-04-26 | 新昌县宏胜机械有限公司 | Abrasion-resistant alloy material for machining fixtures and preparation method of alloy material |
| CN106834849A (en) * | 2016-12-22 | 2017-06-13 | 湘潭大学 | High strength heat resistant magnesium-rare earth |
Cited By (5)
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| CN112239827A (en) * | 2020-10-29 | 2021-01-19 | 威海万丰镁业科技发展有限公司 | Low-heat-cracking-sensitivity high-strength-toughness Mg-Zn-Y-Nd-Ti-Zr cast magnesium alloy |
| CN112239827B (en) * | 2020-10-29 | 2022-05-06 | 威海万丰镁业科技发展有限公司 | Low-heat-cracking-sensitivity high-strength-toughness Mg-Zn-Y-Nd-Ti-Zr cast magnesium alloy |
| CN112442621A (en) * | 2020-11-04 | 2021-03-05 | 长沙新材料产业研究院有限公司 | Magnesium alloy plate and preparation method thereof |
| CN112458348A (en) * | 2020-11-04 | 2021-03-09 | 长沙新材料产业研究院有限公司 | Magnesium alloy semicircular ring section bar and preparation method thereof |
| CN112458349A (en) * | 2020-11-06 | 2021-03-09 | 重庆大学 | Low-rare earth high-strength wrought magnesium alloy containing neodymium and yttrium and preparation method thereof |
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