CN104099504B - A kind of high-strength magnesium alloy and preparation method thereof - Google Patents
A kind of high-strength magnesium alloy and preparation method thereof Download PDFInfo
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000956 alloy Substances 0.000 claims abstract description 96
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 95
- 239000011777 magnesium Substances 0.000 claims abstract description 24
- 229910052802 copper Inorganic materials 0.000 claims abstract description 18
- 229910052691 Erbium Inorganic materials 0.000 claims abstract description 8
- 229910052689 Holmium Inorganic materials 0.000 claims abstract description 8
- 229910052777 Praseodymium Inorganic materials 0.000 claims abstract description 8
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 8
- 229910052702 rhenium Inorganic materials 0.000 claims abstract description 8
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims description 20
- 238000007670 refining Methods 0.000 claims description 20
- 238000011282 treatment Methods 0.000 claims description 15
- 229910003023 Mg-Al Inorganic materials 0.000 claims description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 10
- 230000032683 aging Effects 0.000 claims description 10
- 238000000137 annealing Methods 0.000 claims description 10
- 238000005266 casting Methods 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 229910052749 magnesium Inorganic materials 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims description 5
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 claims description 5
- 229910001626 barium chloride Inorganic materials 0.000 claims description 5
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 5
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 5
- 238000005242 forging Methods 0.000 claims description 5
- 238000000265 homogenisation Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- 239000011780 sodium chloride Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Abstract
The invention provides a kind of high-strength magnesium alloy, contain according to weight percent content: Al:7.2 8.2%, Cu:2.1 3.1%, Cs:2.1 2.3%, Ta:0.3 0.5%, Pr:0.6 0.8%, Er:1.1 1.3%, Cr:2.1 2.7%, Be:1.1 2.3%, Re:0.5 0.7%, Ba:0.4 0.6%, Co:0.7 0.9%, Ho:1.0 1.8%, Ca:3.2 3.4%, surplus is Mg.The present invention also proposes the preparation method of this alloy.This alloy has excellent mechanical performances.
Description
Technical field
The invention belongs to field of magnesium alloy material, especially a kind of high-strength magnesium alloy and preparation method thereof.
Background technology
Magnesium alloy is to add other elementary composition alloys with magnesium for base.Being characterized in: density little (about 1.8g/cm3 magnesium alloy), specific strength is high, and bigger than elastic modelling quantity, good heat dissipation, shock absorbing is good, and the load-carrying ability that withstands shocks is bigger than aluminium alloy, and the corrosive nature of resistance to Organic substance and alkali is good.Main alloy element has aluminum, zinc, manganese, cerium, thorium and a small amount of zirconium or cadmium etc..Due to its have that light specific gravity, specific strength specific stiffness be high, damping vibration attenuation drops that dry ability is strong, liquid condition shaping superior performance and the advantage such as be easily recycled, and is described as 21 century " green structural material ".It is with a wide range of applications in fields such as automotive light weight technology, 3C Product and Aero-Space.But, although there being at present the magnesium alloy of multiple series, but generally have that cost is high, absolute intensity is low and the impact of the factor such as poor ductility does not obtain industrialization and produces and promote on a large scale, therefore, it is necessary to research and develop novel heat resistance magnesium alloy further.
Summary of the invention
It is an object of the invention to provide a kind of high-strength magnesium alloy.It can meet the requirement of higher force performance, has the intensity more much higher than existing magnesium alloy.
It is a further object to provide the preparation method of a kind of high-strength magnesium alloy.
For reaching this purpose, the present invention by the following technical solutions:
A kind of high-strength magnesium alloy, contains according to weight percent content: Al:7.2-8.2%, Cu:2.1-3.1%, Cs:2.1-2.3%, Ta:0.3-0.5%, Pr:0.6-0.8%, Er:1.1-1.3%, Cr:2.1-2.7%, Be:1.1-2.3%, Re:0.5-0.7%, Ba:0.4-0.6%, Co:0.7-0.9%, Ho:1.0-1.8%, Ca:3.2-3.4%, surplus is Mg.
Further, contain according to weight percent content: Al:7.2%, Cu:2.1%, Cs:2.1%, Ta:0.3%, Pr:0.6%, Er:1.1%, Cr:2.1%, Be:1.1%, Re:0.5%, Ba:0.4%, Co:0.7%, Ho:1.0%, Ca:3.2%, surplus is Mg.
The preparation method of described high-strength magnesium alloy, comprises the following steps:
(1) raw material prepares: carrying out raw material preparation according to weight percent content, described raw material is pure Mg ingot, Mg-Al intermediate alloy, pure Al ingot, pure Cu, Al-Cs intermediate alloy, Al-Ta intermediate alloy, Al-Pr intermediate alloy, Mg-Er intermediate alloy, Mg-Cr intermediate alloy, pure Be, Al-Re intermediate alloy, Al-Ba intermediate alloy, pure Co, Ho-Ca intermediate alloy；
(2) melting: resistance furnace is heated to 365 DEG C, first in smelting furnace, add pure Mg ingot, it is passed through gas atmosphere simultaneously, continue resistance furnace is heated, after pure magnesium ingot is completely melt, add Mg-Al intermediate alloy, pure Al ingot, pure Cu, Al-Cs intermediate alloy, Al-Ta intermediate alloy, Al-Pr intermediate alloy, Mg-Er intermediate alloy, Mg-Cr intermediate alloy, pure Be, Al-Re intermediate alloy, Al-Ba intermediate alloy, pure Co, Ho-Ca intermediate alloy, it is stirred after all raw materials are completely melt, mixing time is 15 minutes, 10 minutes are stood after stirring, draw surface scum；
(3) refine: after resistance furnace temperature rises to 710～730 DEG C, carries out mechanical agitation, adds refining agent of Mg alloy while stirring, and refining time is 10～16 minutes, and after refine is complete, insulation stands 15～20 minutes, then drags for slag；Consisting of of described refining agent of Mg alloy: NaCl:8-20%；CaF2:18～26%；BaCl2:3-5%；Surplus is KCl；
(4) casting: being cast to magnesium alloy refining liquid preheat in the swage tool that temperature is 350～400 DEG C, cast temperature is 700～720 DEG C；Cast gauge is long 1.5 meters, wide 1.5 meters, high 3 meters；
(5) Homogenization Treatments: by ingot casting in resistance furnace with the temperature 12 hours of 410 DEG C, then be warmed up to 430 DEG C and be incubated 8 hours, finally quench in 70 DEG C of warm water, prepare magnesium alloy blank；
(6) deformation process: preheated 1 hour at 380～400 DEG C by blank, carries out two to hammer cogging, being forged into the slab that thickness is 500 millimeters；Reduction in pass is 15～17%, and every 1-3 passage forging after annealing 3h, annealing temperature is 300-350 DEG C；
(7) Ageing Treatment: by the magnesium alloy through deformation process, is placed in resistance furnace the temperature Ageing Treatment 5 hours with 250 DEG C.
The invention have the advantage that the magnesium alloy of the present invention can meet the requirement of higher force performance, there is the intensity more much higher than existing magnesium alloy.
Detailed description of the invention
Embodiment
1
A kind of high-strength magnesium alloy, contains according to weight percent content: Al:7.2%, Cu:2.1%, Cs:2.1%, Ta:0.3%, Pr:0.6%, Er:1.1%, Cr:2.1%, Be:1.1%, Re:0.5%, Ba:0.4%, Co:0.7%, Ho:1.0%, Ca:3.2%, surplus is Mg, and its preparation method comprises the following steps:
(1) raw material prepares: carrying out raw material preparation according to weight percent content, described raw material is pure Mg ingot, Mg-Al intermediate alloy, pure Al ingot, pure Cu, Al-Cs intermediate alloy, Al-Ta intermediate alloy, Al-Pr intermediate alloy, Mg-Er intermediate alloy, Mg-Cr intermediate alloy, pure Be, Al-Re intermediate alloy, Al-Ba intermediate alloy, pure Co, Ho-Ca intermediate alloy；
(2) melting: resistance furnace is heated to 365 DEG C, first in smelting furnace, add pure Mg ingot, it is passed through gas atmosphere simultaneously, continue resistance furnace is heated, after pure magnesium ingot is completely melt, add Mg-Al intermediate alloy, pure Al ingot, pure Cu, Al-Cs intermediate alloy, Al-Ta intermediate alloy, Al-Pr intermediate alloy, Mg-Er intermediate alloy, Mg-Cr intermediate alloy, pure Be, Al-Re intermediate alloy, Al-Ba intermediate alloy, pure Co, Ho-Ca intermediate alloy, it is stirred after all raw materials are completely melt, mixing time is 15 minutes, 10 minutes are stood after stirring, draw surface scum；
(3) refine: after resistance furnace temperature rises to 710 DEG C, carries out mechanical agitation, adds refining agent of Mg alloy while stirring, and refining time is 10 minutes, and after refine is complete, insulation stands 15 minutes, then drags for slag；Consisting of of described refining agent of Mg alloy: NaCl:8%；CaF2:18%；BaCl2:3%；Surplus is KCl；
(4) casting: being cast to magnesium alloy refining liquid preheat in the swage tool that temperature is 350 DEG C, cast temperature is 700 DEG C；Cast gauge is long 1.5 meters, wide 1.5 meters, high 3 meters；
(5) Homogenization Treatments: by ingot casting in resistance furnace with the temperature 12 hours of 410 DEG C, then be warmed up to 430 DEG C and be incubated 8 hours, finally quench in 70 DEG C of warm water, prepare magnesium alloy blank；
(6) deformation process: preheated 1 hour at 380 DEG C by blank, carries out two to hammer cogging, being forged into the slab that thickness is 500 millimeters；Reduction in pass is 15%, and every 1-3 passage forging after annealing 3h, annealing temperature is 300 DEG C；
(7) Ageing Treatment: by the magnesium alloy through deformation process, is placed in resistance furnace the temperature Ageing Treatment 5 hours with 250 DEG C.
Embodiment
2
:
A kind of high-strength magnesium alloy, contains according to weight percent content: Al:7.7%, Cu:2.6%, Cs:2.7%, Ta:0.4%, Pr:0.7%, Er:1.2%, Cr:2.4%, Be:1.7%, Re:0.6%, Ba:0.5%, Co:0.8%, Ho:1..4%, Ca:3.3%, surplus is Mg, and its preparation method comprises the following steps:
(1) raw material prepares: carrying out raw material preparation according to weight percent content, described raw material is pure Mg ingot, Mg-Al intermediate alloy, pure Al ingot, pure Cu, Al-Cs intermediate alloy, Al-Ta intermediate alloy, Al-Pr intermediate alloy, Mg-Er intermediate alloy, Mg-Cr intermediate alloy, pure Be, Al-Re intermediate alloy, Al-Ba intermediate alloy, pure Co, Ho-Ca intermediate alloy；
(2) melting: resistance furnace is heated to 365 DEG C, first in smelting furnace, add pure Mg ingot, it is passed through gas atmosphere simultaneously, continue resistance furnace is heated, after pure magnesium ingot is completely melt, add Mg-Al intermediate alloy, pure Al ingot, pure Cu, Al-Cs intermediate alloy, Al-Ta intermediate alloy, Al-Pr intermediate alloy, Mg-Er intermediate alloy, Mg-Cr intermediate alloy, pure Be, Al-Re intermediate alloy, Al-Ba intermediate alloy, pure Co, Ho-Ca intermediate alloy, it is stirred after all raw materials are completely melt, mixing time is 15 minutes, 10 minutes are stood after stirring, draw surface scum；
(3) refine: after resistance furnace temperature rises to 720 DEG C, carries out mechanical agitation, adds refining agent of Mg alloy while stirring, and refining time is 13 minutes, and after refine is complete, insulation stands 18 minutes, then drags for slag；Consisting of of described refining agent of Mg alloy: NaCl:14%；CaF2:22%；BaCl2:4%；Surplus is KCl；
(4) casting: being cast to magnesium alloy refining liquid preheat in the swage tool that temperature is 375 DEG C, cast temperature is 710 DEG C；Cast gauge is long 1.5 meters, wide 1.5 meters, high 3 meters；
(5) Homogenization Treatments: by ingot casting in resistance furnace with the temperature 12 hours of 410 DEG C, then be warmed up to 430 DEG C and be incubated 8 hours, finally quench in 70 DEG C of warm water, prepare magnesium alloy blank；
(6) deformation process: preheated 1 hour at 390 DEG C by blank, carries out two to hammer cogging, being forged into the slab that thickness is 500 millimeters；Reduction in pass is 16%, and every 1-3 passage forging after annealing 3h, annealing temperature is 325 DEG C；
(7) Ageing Treatment: by the magnesium alloy through deformation process, is placed in resistance furnace the temperature Ageing Treatment 5 hours with 250 DEG C.
Embodiment
3
:
A kind of high-strength magnesium alloy, contains according to weight percent content: Al:8.2%, Cu:3.1%, Cs:2.3%, Ta:0.5%, Pr:0.8%, Er:1.3%, Cr:2.7%, Be:2.3%, Re:0.7%, Ba:0.6%, Co:0.9%, Ho:1.8%, Ca:3.4%, surplus is Mg, and its preparation method comprises the following steps:
(1) raw material prepares: carrying out raw material preparation according to weight percent content, described raw material is pure Mg ingot, Mg-Al intermediate alloy, pure Al ingot, pure Cu, Al-Cs intermediate alloy, Al-Ta intermediate alloy, Al-Pr intermediate alloy, Mg-Er intermediate alloy, Mg-Cr intermediate alloy, pure Be, Al-Re intermediate alloy, Al-Ba intermediate alloy, pure Co, Ho-Ca intermediate alloy；
(2) melting: resistance furnace is heated to 365 DEG C, first in smelting furnace, add pure Mg ingot, it is passed through gas atmosphere simultaneously, continue resistance furnace is heated, after pure magnesium ingot is completely melt, add Mg-Al intermediate alloy, pure Al ingot, pure Cu, Al-Cs intermediate alloy, Al-Ta intermediate alloy, Al-Pr intermediate alloy, Mg-Er intermediate alloy, Mg-Cr intermediate alloy, pure Be, Al-Re intermediate alloy, Al-Ba intermediate alloy, pure Co, Ho-Ca intermediate alloy, it is stirred after all raw materials are completely melt, mixing time is 15 minutes, 10 minutes are stood after stirring, draw surface scum；
(3) refine: after resistance furnace temperature rises to 730 DEG C, carries out mechanical agitation, adds refining agent of Mg alloy while stirring, and refining time is 16 minutes, and after refine is complete, insulation stands 20 minutes, then drags for slag；Consisting of of described refining agent of Mg alloy: NaCl:20%；CaF2:26%；BaCl2:5%；Surplus is KCl；
(4) casting: being cast to magnesium alloy refining liquid preheat in the swage tool that temperature is 375 DEG C, cast temperature is 710 DEG C；Cast gauge is long 1.5 meters, wide 1.5 meters, high 3 meters；
(5) Homogenization Treatments: by ingot casting in resistance furnace with the temperature 12 hours of 410 DEG C, then be warmed up to 430 DEG C and be incubated 8 hours, finally quench in 70 DEG C of warm water, prepare magnesium alloy blank；
(6) deformation process: preheated 1 hour at 390 DEG C by blank, carries out two to hammer cogging, being forged into the slab that thickness is 500 millimeters；Reduction in pass is 16%, and every 1-3 passage forging after annealing 3h, annealing temperature is 325 DEG C；
(7) Ageing Treatment: by the magnesium alloy through deformation process, is placed in resistance furnace the temperature Ageing Treatment 5 hours with 250 DEG C.Embodiment 1-3 The performance of the alloy obtained is listed in the table below
| Experimental example | Yield strength | Tensile strength | Elongation percentage |
| 1 | 272MPa | 343MPa | 6.10% |
| 2 | 278MPa | 360MPa | 9.40% |
| 3 | 343MPa | 409MPa | 4.32% |
Claims (3)
1. a high-strength magnesium alloy, it is characterised in that according to weight percent content be: Al:7.2-8.2%, Cu:2.1-3.1%, Cs:2.1-2.3%, Ta:0.3-0.5%, Pr:0.6-0.8%, Er:1.1-1.3%, Cr:2.1-2.7%, Be:1.1-2.3%, Re:0.5-0.7%, Ba:0.4-0.6%, Co:0.7-0.9%, Ho:1.0-1.8%, Ca:3.2-3.4%, surplus is Mg.
2. high-strength magnesium alloy as claimed in claim 1, it is characterised in that: according to weight percent content be: Al:7.2%, Cu:2.1%, Cs:2.1%, Ta:0.3%, Pr:0.6%, Er:1.1%, Cr:2.1%, Be:1.1%, Re:0.5%, Ba:0.4%, Co:0.7%, Ho:1.0%, Ca:3.2%, surplus is Mg.
3. the preparation method of high-strength magnesium alloy as claimed in claim 1, it is characterised in that:
(1) raw material prepares: carrying out raw material preparation according to weight percent content, described raw material is pure Mg ingot, Mg-Al intermediate alloy, pure Al ingot, pure Cu, Al-Cs intermediate alloy, Al-Ta intermediate alloy, Al-Pr intermediate alloy, Mg-Er intermediate alloy, Mg-Cr intermediate alloy, pure Be, Al-Re intermediate alloy, Al-Ba intermediate alloy, pure Co, Ho-Ca intermediate alloy；
(2) melting: resistance furnace is heated to 365 DEG C, first in smelting furnace, add pure Mg ingot, it is passed through gas atmosphere simultaneously, continue resistance furnace is heated, after pure magnesium ingot is completely melt, add Mg-Al intermediate alloy, pure Al ingot, pure Cu, Al-Cs intermediate alloy, Al-Ta intermediate alloy, Al-Pr intermediate alloy, Mg-Er intermediate alloy, Mg-Cr intermediate alloy, pure Be, Al-Re intermediate alloy, Al-Ba intermediate alloy, pure Co, Ho-Ca intermediate alloy, it is stirred after all raw materials are completely melt, mixing time is 15 minutes, 10 minutes are stood after stirring, draw surface scum；
(3) refine: after resistance furnace temperature rises to 710～730 DEG C, carries out mechanical agitation, adds refining agent of Mg alloy while stirring, and refining time is 10～16 minutes, and after refine is complete, insulation stands 15～20 minutes, then drags for slag；Consisting of of described refining agent of Mg alloy: NaCl:8-20%；CaF2:18～26%；BaCl2:3-5%；Surplus is KCl；
(4) casting: being cast to magnesium alloy refining liquid preheat in the swage tool that temperature is 350～400 DEG C, cast temperature is 700～720 DEG C；Cast gauge is long 1.5 meters, wide 1.5 meters, high 3 meters；
(5) Homogenization Treatments: by ingot casting in resistance furnace with the temperature 12 hours of 410 DEG C, then be warmed up to 430 DEG C and be incubated 8 hours, finally quench in 70 DEG C of warm water, prepare magnesium alloy blank；
(6) deformation process: preheated 1 hour at 380～400 DEG C by blank, carries out two to hammer cogging, being forged into the slab that thickness is 500 millimeters；Reduction in pass is 15～17%, and every 1-3 passage forging after annealing 3h, annealing temperature is 300-350 DEG C；
(7) Ageing Treatment: by the magnesium alloy through deformation process, is placed in resistance furnace the temperature Ageing Treatment 5 hours with 250 DEG C.
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| CN101463441A (en) * | 2009-01-15 | 2009-06-24 | 上海交通大学 | Rare earth-containing high strength heat resisting magnesium alloy and preparation thereof |
| CN103695743A (en) * | 2014-01-16 | 2014-04-02 | 张霞 | Magnesium alloy and preparation method thereof |
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| US7029626B2 (en) * | 2003-11-25 | 2006-04-18 | Daimlerchrysler Corporation | Creep resistant magnesium alloy |
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