CN102304631A - Preparation method of heat-resistant creep-resistant low-cost magnesium alloy - Google Patents
Preparation method of heat-resistant creep-resistant low-cost magnesium alloy Download PDFInfo
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- CN102304631A CN102304631A CN 201110314163 CN201110314163A CN102304631A CN 102304631 A CN102304631 A CN 102304631A CN 201110314163 CN201110314163 CN 201110314163 CN 201110314163 A CN201110314163 A CN 201110314163A CN 102304631 A CN102304631 A CN 102304631A
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- Prior art keywords
- magnesium alloy
- magnesium
- resistant
- preparation
- heat
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000011777 magnesium Substances 0.000 claims abstract description 21
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 12
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 11
- 239000011575 calcium Substances 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 10
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 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 claims abstract description 7
- 238000007670 refining Methods 0.000 claims abstract description 7
- 239000004411 aluminium Substances 0.000 claims description 9
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000007796 conventional method Methods 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 2
- 230000002939 deleterious effect Effects 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 229910001051 Magnalium Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a preparation method of a heat-resistant creep-resistant low-cost magnesium alloy, and the method can be used for solving the problems that the existing magnesium alloy has low creep resistance and high cost. The preparation method comprises the following steps: (1) processing metal magnesium ingot into a magnesium melt in a crucible at the temperature of 645-655 DEG C; (2) heating the magnesium melt to 745-765 DEG C, and gradually adding 7.8-8.3% of aluminum, 0.17-0.35% of manganese, 0.9-1.2% of calcium and 0.15-0.35% of strontium during heating, thus obtaining a magnesium alloy melt; and (3) refining the magnesium alloy melt according to a conventional method, standing, and casting when the magnesium alloy melt is cooled to 650-670 DEG C so as to obtain a finished product. The preparation method disclosed by the invention is simple to operate; and the obtained magnesium alloy has the advantages of low cost, significantly improved creep resistance, and better mechanical properties than AZ9 magnesium alloy at room temperature and 150 DEG C.
Description
Technical field
The invention belongs to MAGNESIUM METAL and magnesium alloy smelting industry, be specifically related to the preparation method of the low-cost magnesium alloy of a kind of heat-resistant creep-resistant.
Background technology
Magnesium alloy has very high specific tenacity and specific rigidity; High dimensional stability and damping shock absorption property, the favorable mechanical processing characteristics, and be easy to recycle; But the hot strength of magnesium alloy and creep-resistant property are relatively poor, become the major reason of restriction magnesium alloy widespread use.
Creep be metal under steady temperature constant stretch load, the phenomenon that test piece deformation slowly increases in time.Particularly at high temperature, except the work hardening that produces with distortion, also produce at low temperatures or distantly in other deformation mechanisms have high intensity of activation and beat processes such as recovery, diffusion, phase transformation.Magnesium alloy belongs to hexagonal structure, has only 4 independently slip systems, and plastic deformation ability is relatively poor.
In order to enlarge the use field of magnesium alloy, improve the heat-resistant creep-resistant property of magnesium alloy, reduce cost of manufacture and just seem particularly important.
Summary of the invention
The present invention is low in order to solve existing magnesium alloy creep resistance, the problem that cost is high, and the preparation method of the low-cost magnesium alloy of a kind of heat-resistant creep-resistant is provided.
The present invention realizes through following technical scheme:
The preparation method of the low-cost magnesium alloy of a kind of heat-resistant creep-resistant may further comprise the steps:
(1) earlier the metal magnesium ingot is processed the magnesium melt in crucible under 645-655 ℃;
(2) the magnesium melt is heated to 745-765 ℃, in heat-processed, adds the aluminium of 7.8-8.3%, the manganese of 0.17-0.35%, the calcium of 0.9-1.2%, the strontium of 0.15-0.35% gradually, obtain magnesium alloy fused mass;
(3) magnesium alloy fused mass is pressed the ordinary method refining, leave standstill, make and cast when the magnesium alloy fused mass temperature is reduced to 650-670 ℃, get product.
Magnesium alloy of the present invention has added aluminium, manganese, calcium, strontium, and wherein aluminium can improve alloy strength and hardness, also can widen solidification zone, improves castability; Manganese can improve yield strength; Avoid generating the anti-seawater corrosion ability that deleterious intergranular compound improves magnalium through removing de-iron and other heavy metal elements; The deleterious intermetallic compound of part can be separated in fusion process, and all right crystal grain thinning improves weldability; Calcium can improve the metallurgical quality of magnesium alloy; Before the casting alloy casting, add and alleviate the oxidation in metal melt and the heat treating castings process, all right refinement alloy grain, the creep resistance of raising alloy; Improve the rollability of thin plate, calcium can also reduce the microbattery effect of magnesium alloy simultaneously; Strontium is a kind of important alloy element, both can improve the magnesium alloy recrystallization temperature and slow down recrystallization process, again can crystal grain thinning, thus improve the creep resistance of being heated of magnesium alloy.
The inventive method is simple to operate; Cost is low; To test according to GB/T228 according to the magnesium alloy that the inventive method obtains; Creep resistance is significantly increased; Mechanical property is better than the AZ9 magnesium alloy when its room temperature and 150 ℃; Wherein tensile strength reaches 231-250MPa, and yield strength reaches 110-135MPa, and elongation reaches 3-4%.
Embodiment
Embodiment 1
The preparation method of the low-cost magnesium alloy of a kind of heat-resistant creep-resistant may further comprise the steps:
(1) earlier the metal magnesium ingot is processed the magnesium melt in crucible under 645 ℃;
(2) the magnesium melt is heated to 745 ℃, in heat-processed, adds 8.0% aluminium, 0.17% manganese, 0.9% calcium, 0.25% strontium gradually, obtain magnesium alloy fused mass;
(3) magnesium alloy fused mass is pressed the ordinary method refining, leave standstill, make and cast when the magnesium alloy fused mass temperature is reduced to 650-670 ℃, get product.
Embodiment 2
The preparation method of the low-cost magnesium alloy of a kind of heat-resistant creep-resistant may further comprise the steps:
(1) earlier the metal magnesium ingot is processed the magnesium melt in crucible under 650 ℃;
(2) the magnesium melt is heated to 755 ℃, in heat-processed, adds 7.8% aluminium, 0.25% manganese, 1.2% calcium, 0.15% strontium gradually, obtain magnesium alloy fused mass;
(3) magnesium alloy fused mass is pressed the ordinary method refining, leave standstill, make and cast when the magnesium alloy fused mass temperature is reduced to 650-670 ℃, get product.
Embodiment 3
The preparation method of the low-cost magnesium alloy of a kind of heat-resistant creep-resistant may further comprise the steps:
(1) earlier the metal magnesium ingot is processed the magnesium melt in crucible under 655 ℃;
(2) the magnesium melt is heated to 765 ℃, in heat-processed, adds 8.3% aluminium, 0.35% manganese, 1.0% calcium, 0.35% strontium gradually, obtain magnesium alloy fused mass;
(3) magnesium alloy fused mass is pressed the ordinary method refining, leave standstill, make and cast when the magnesium alloy fused mass temperature is reduced to 650-670 ℃, get product.
Embodiment 4
The preparation method of the low-cost magnesium alloy of a kind of heat-resistant creep-resistant may further comprise the steps:
(1) earlier the metal magnesium ingot is processed the magnesium melt in crucible under 655 ℃;
(2) the magnesium melt is heated to 765 ℃, in heat-processed, adds 8.0% aluminium, 0.25% manganese, 1.1% calcium, 0.25% strontium gradually, obtain magnesium alloy fused mass;
(3) magnesium alloy fused mass is pressed the ordinary method refining, leave standstill, make and cast when the magnesium alloy fused mass temperature is reduced to 650-670 ℃, get product.
Claims (2)
1. the preparation method of the low-cost magnesium alloy of a heat-resistant creep-resistant is characterized in that may further comprise the steps:
(1) earlier the metal magnesium ingot is processed the magnesium melt in crucible under 645-655 ℃;
(2) the magnesium melt is heated to 745-765 ℃, in heat-processed, adds the aluminium of 7.8-8.3%, the manganese of 0.17-0.35%, the calcium of 0.9-1.2%, the strontium of 0.15-0.35% gradually, obtain magnesium alloy fused mass;
(3) magnesium alloy fused mass is pressed the ordinary method refining, leave standstill, make and cast when the magnesium alloy fused mass temperature is reduced to 650-670 ℃, get product.
2. the preparation method of the low-cost magnesium alloy of a kind of heat-resistant creep-resistant according to claim 1 is characterized in that adding gradually in the described step (2) 8.0% aluminium, 0.25% manganese, 1.1% calcium, 0.25% strontium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110314163 CN102304631B (en) | 2011-10-17 | 2011-10-17 | Preparation method of heat-resistant creep-resistant low-cost magnesium alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110314163 CN102304631B (en) | 2011-10-17 | 2011-10-17 | Preparation method of heat-resistant creep-resistant low-cost magnesium alloy |
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| Publication Number | Publication Date |
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| CN102304631A true CN102304631A (en) | 2012-01-04 |
| CN102304631B CN102304631B (en) | 2013-03-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102899515A (en) * | 2012-09-13 | 2013-01-30 | 太原理工大学 | Preparation method for alkaline earth heatproof magnesium alloy |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060222556A1 (en) * | 2003-09-18 | 2006-10-05 | Toyota Jidosha Kabushiki Kaisha | Heat resistant magnesium die casting alloys |
| CN101476072A (en) * | 2009-01-19 | 2009-07-08 | 湖南大学 | Temperature distortion resistant magnesium alloy containing Ca and Sr |
| CN102051510A (en) * | 2003-01-07 | 2011-05-11 | 死海鎂有限公司 | Creep-resistance magnesium alloy with improved casting property |
| CN102206781A (en) * | 2010-03-29 | 2011-10-05 | 韩国生产技术研究院 | Magnesium-based alloy for high temperature and manufacturing method thereof |
-
2011
- 2011-10-17 CN CN 201110314163 patent/CN102304631B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051510A (en) * | 2003-01-07 | 2011-05-11 | 死海鎂有限公司 | Creep-resistance magnesium alloy with improved casting property |
| US20060222556A1 (en) * | 2003-09-18 | 2006-10-05 | Toyota Jidosha Kabushiki Kaisha | Heat resistant magnesium die casting alloys |
| CN101476072A (en) * | 2009-01-19 | 2009-07-08 | 湖南大学 | Temperature distortion resistant magnesium alloy containing Ca and Sr |
| CN102206781A (en) * | 2010-03-29 | 2011-10-05 | 韩国生产技术研究院 | Magnesium-based alloy for high temperature and manufacturing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102899515A (en) * | 2012-09-13 | 2013-01-30 | 太原理工大学 | Preparation method for alkaline earth heatproof magnesium alloy |
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| CN102304631B (en) | 2013-03-20 |
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Address after: 043800 Shanxi city of Yuncheng Province Wang Pei township of Wenxi county. Patentee after: SHANXI REGAL METAL NEW MATERIAL CO.,LTD. Address before: 043800 Shanxi city of Yuncheng Province Wang Pei township of Wenxi county. Patentee before: WENXI COUNTY REGAL MAGNESIUM Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Denomination of invention: A Preparation Method of Low Cost Magnesium Alloy with Heat and Creep Resistance Effective date of registration: 20221226 Granted publication date: 20130320 Pledgee: Shanghai Pudong Development Bank Co.,Ltd. Yuncheng Branch Pledgor: SHANXI REGAL METAL NEW MATERIAL CO.,LTD. Registration number: Y2022140000062 |
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Granted publication date: 20130320 Pledgee: Shanghai Pudong Development Bank Co.,Ltd. Yuncheng Branch Pledgor: SHANXI REGAL METAL NEW MATERIAL CO.,LTD. Registration number: Y2022140000062 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A preparation method of heat-resistant and creep resistant low-cost magnesium alloy Granted publication date: 20130320 Pledgee: Shanghai Pudong Development Bank Co.,Ltd. Yuncheng Branch Pledgor: SHANXI REGAL METAL NEW MATERIAL CO.,LTD. Registration number: Y2024980002622 |