CN100457943C - High performance deformed magnesium alloy - Google Patents
High performance deformed magnesium alloy Download PDFInfo
- Publication number
- CN100457943C CN100457943C CNB2007100231646A CN200710023164A CN100457943C CN 100457943 C CN100457943 C CN 100457943C CN B2007100231646 A CNB2007100231646 A CN B2007100231646A CN 200710023164 A CN200710023164 A CN 200710023164A CN 100457943 C CN100457943 C CN 100457943C
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- magnesium alloy
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 20
- 239000011777 magnesium Substances 0.000 claims abstract description 22
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 16
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 10
- 229910052749 magnesium Inorganic materials 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 15
- 239000007788 liquid Substances 0.000 description 15
- 238000007670 refining Methods 0.000 description 15
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 12
- 239000003795 chemical substances by application Substances 0.000 description 12
- 239000013078 crystal Substances 0.000 description 10
- 230000004907 flux Effects 0.000 description 10
- 229910052761 rare earth metal Inorganic materials 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 5
- 229910052786 argon Inorganic materials 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- CNFDGXZLMLFIJV-UHFFFAOYSA-L manganese(II) chloride tetrahydrate Chemical compound O.O.O.O.[Cl-].[Cl-].[Mn+2] CNFDGXZLMLFIJV-UHFFFAOYSA-L 0.000 description 4
- 238000010907 mechanical stirring Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000010792 warming Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 magnesium form compound Chemical class 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The high performance deformable magnesium alloy has the components including Mn 1.3-2.3 %, Ce 0.4- 1.2 %, Sr 0.1-0.5 %, Si not more than 0.05 %, Fe not more than 0.004 %, Cu not more than 0.025 %, Ni not more than 0.001 %, and Mg for the rest. The magnesium alloy with increased RE elements Ce and Sr amount has high mechanical performance and is suitable for intruding production.
Description
Technical field
The invention belongs to the magnesium alloy production technical field, relate in particular to a kind of high performance wrought magnesium alloys.
Background technology
At present, the Mg-Mn wrought magnesium alloys that the industrial melting of magnesium alloy makes, though have excellent corrosion resisting performance and best weldability, shortcoming is that intensity is not high, promptly comprehensive mechanical property is lower, so limited its large-scale application in civilian industry.With the MB8 wrought magnesium alloys is example (Mn:1.5～2.5%, Ce:0.15～0.35%), though also can satisfy certain extrusion production requirement, crystal grain is thick relatively, but the difficult satisfied extrusion production that mechanical property is had requirements at the higher level.
Summary of the invention
Technical problem to be solved by this invention is the lower problem of existing magnesium alloy comprehensive mechanical property, provides a kind of mechanical property higher magnesium alloy, and can further satisfy has the more extrusion production of hi-tech requirement to the magnesium alloy comprehensive mechanical property.
The weight percent of each component of the present invention is: Mn:1.3～2.3%, Ce:0.4～1.2%, Sr:0.1～0.5%, Si :≤0.05, Fe: Cu≤0.004%: Ni≤0.025% :≤0.001%, and surplus is Mg.
Preparation method of the present invention comprises the steps:
1, industrial magnesium ingot is dropped in the off-the-shelf clean crucible adds end flux melts, the consumption of end flux accounts for 1.5～2.5% of quality of furnace charge, be sprinkled into insulating covering agent in the process to prevent burning, the consumption of insulating covering agent accounts for 0.3～0.5% of quality of furnace charge, the whole melting process time is controlled at 2～6h, and magnesium liquid outlet temperature is controlled at 670～690 ℃;
2, after fusing finishes, blowing argon gas in magnesium liquid, and adopt mechanical stirring, and adding refining agent and Manganous chloride tetrahydrate simultaneously and carry out refining, the consumption of refining agent accounts for 1.5～2.5% of quality of furnace charge, and the time is controlled at 30min, and temperature is controlled at 680～740 ℃;
3, after refining finishes, add rare-earth element cerium and metallic element strontium when liquid magnesium alloy continues to be warming up to 740～760 ℃, the time is controlled at 5min, and temperature is controlled at 740～760 ℃;
4, leave standstill cooling after the end, make flux and inclusion sedimentation, the time is controlled at 30min;
5, under 660～700 ℃ of temperature condition, and pour into a mould in protective atmosphere, protective atmosphere is generally SF
6, CO
2, N
2, SO
2, dry air mixed gas or mixed gas protected atmosphere.
Existing end flux, insulating covering agent, the refining agent that is useful on magnesium alloy preparation technology all can be used for using in the preparation process of the present invention.
The present invention increases the add-on of rare-earth element cerium and adds the metallic element strontium in existing process for smelting magnesium alloy, it acts on main performance in the following areas:
1, add rare-earth element cerium, a cerium part is dissolved in the sosoloid, and another part and magnesium form compound Mg
9Ce, small and dispersed are distributed in a (Mg) matrix, play the effect of reinforced alloys and crystal grain thinning;
2, add rare-earth element cerium, the heat-resisting Mg mutually of cerium and magnesium formation
9Ce can hinder recrystal grain and grow up, thereby obtains tiny dynamic recrystallization crystal grain after the extruding, all is useful for improving tensile strength of alloys and elongation;
3, add rare-earth element cerium, the heat-resisting Mg mutually of cerium and magnesium formation
9Ce, pinning is lived crystal boundary and intracrystalline dislocation motion effectively, become the important obstruction that hinders dislocation motion and crystal grain distortion, has kept material internal under the high temperature that the dislocation of higher density is arranged, and has improved the intensity of alloy under the high temperature;
4, add rare-earth element cerium, make the crystal grain of as cast condition obtain refinement, yield strength, the particularly yield strength under squeezed state increase because of twin being suppressed significantly in the crystal;
5, add the metallic element strontium, can reduce condensate depression, and the forward position that easily is adsorbed on solid/liquid interfaces forms the adsorption film of rich Sr, reduce the crystal grain production rate, thus crystal grain thinning;
6, tiny crystal grain helps improving the feeding capacity of liquid magnesium alloy, reduces microshrinkage, increases the density of foundry goods;
7, grain refining helps the raising of alloy corrosion resistance energy;
8, has good extrusion process performance.
Embodiment
Below in conjunction with embodiment the present invention is further described:
Embodiment 1:
Magnesium ingot 1168.8kg is dropped in the off-the-shelf clean crucible, add flux 18kg fusing at the bottom of the RJ-2, be sprinkled into RJ-4 insulating covering agent 3.6kg in the process to prevent burning, the time is controlled at 4h, and magnesium liquid outlet temperature is controlled at 670 ℃; After fusing finished, blowing argon gas in magnesium liquid, and employing mechanical stirring added RJ-6 refining agent 18kg simultaneously and Manganous chloride tetrahydrate 35.7kg carries out refining, and the time is controlled at 30min, and temperature is controlled at 680 ℃; After refining finishes, add rare-earth element cerium 14.4kg and metallic element strontium 1.2kg when liquid magnesium alloy continues to be warming up to 740 ℃, the time is controlled at 5min, and temperature is controlled at 740 ℃; Leave standstill cooling after the end, make flux and inclusion sedimentation, the time is controlled at 30min; At last under 660 ℃ of temperature condition, and at SF
6+ N
2Pour into a mould in the protective atmosphere.
Since magnesium liquid leave standstill carry slag and after the deimpurity process of sedimentation in, have part material and be eliminated, add the reason of high temperature oxidation, the yield rate of making is between 95～96%.Therefore certain when sampling analysis, might occur and become to distribute to meet the predetermined preparation requirement of alloy, at this moment should be according to predetermined prescription, the melting once more of some raw material of corresponding adding is till sampling analysis is qualified.For following embodiment above-mentioned requirement is arranged all.
Embodiment 2:
Magnesium ingot 1165.2kg is dropped in the off-the-shelf clean crucible, add flux 24kg fusing at the bottom of the RJ-2, be sprinkled into RJ-5 insulating covering agent 4.8kg in the process to prevent burning, the time is controlled at 5h, and magnesium liquid outlet temperature is controlled at 680 ℃; After fusing finished, blowing argon gas in magnesium liquid, and employing mechanical stirring added RJ-5 refining agent 24kg simultaneously and Manganous chloride tetrahydrate 49.5kg carries out refining, and the time is controlled at 30min, and temperature is controlled at 710 ℃; After refining finishes, add rare-earth element cerium 9.6kg and metallic element strontium 3.6kg when liquid magnesium alloy continues to be warming up to 750 ℃, the time is controlled at 5min, and temperature is controlled at 750 ℃; Leave standstill cooling after the end, make flux and inclusion sedimentation, the time is controlled at 30min; At last under 680 ℃ of temperature condition, and at SO
2Pour into a mould in the protective atmosphere.
Embodiment 3:
Magnesium ingot 1162.8kg is dropped in the off-the-shelf clean crucible, add flux 30kg fusing at the bottom of the RJ-2, be sprinkled into RJ-6 insulating covering agent 6.0kg in the process to prevent burning, the time is controlled at 6h, and magnesium liquid outlet temperature is controlled at 690 ℃; After fusing finished, blowing argon gas in magnesium liquid, and employing mechanical stirring added RJ-4 refining agent 30kg simultaneously and Manganous chloride tetrahydrate 63.2kg carries out refining, and the time is controlled at 30min, and temperature is controlled at 740 ℃; After refining finishes, add rare-earth element cerium 3.6kg and metallic element strontium 6.0kg when liquid magnesium alloy continues to be warming up to 760 ℃, the time is controlled at 5min, and temperature is controlled at 760 ℃; Leave standstill cooling after the end, make flux and inclusion sedimentation, the time is controlled at 30min; At last under 660 ℃ of temperature condition, and at CO
2Pour into a mould in the protective atmosphere.
Claims (1)
1, a kind of wrought magnesium alloys, the weight percent that it is characterized in that component is: Mn:1.3～2.3%, Ce:0.4～1.2%, Sr:0.1～0.5%, Si :≤0.05, Fe: Cu≤0.004%: Ni≤0.025% :≤0.001%, and surplus is Mg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100231646A CN100457943C (en) | 2007-06-07 | 2007-06-07 | High performance deformed magnesium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100231646A CN100457943C (en) | 2007-06-07 | 2007-06-07 | High performance deformed magnesium alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101067177A CN101067177A (en) | 2007-11-07 |
| CN100457943C true CN100457943C (en) | 2009-02-04 |
Family
ID=38879870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100231646A Active CN100457943C (en) | 2007-06-07 | 2007-06-07 | High performance deformed magnesium alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100457943C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102899543B (en) * | 2012-11-13 | 2015-07-08 | 河南誉金技术服务有限公司 | Magnesium alloy for bicycle frame |
| CN103602866A (en) * | 2013-11-01 | 2014-02-26 | 尚进 | Soluble metal alloy material |
| CN103602865B (en) * | 2013-12-02 | 2015-06-17 | 四川大学 | Copper-containing heat-resistant magnesium-tin alloy and preparation method thereof |
| CN106319314A (en) * | 2016-11-07 | 2017-01-11 | 天津东义镁制品股份有限公司 | High-speed extrusion high-strength deforming magnesium alloy and preparation method thereof |
| CN108677073A (en) * | 2018-09-03 | 2018-10-19 | 重庆大学 | A kind of high-strength wrought magnesium alloys and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB616412A (en) * | 1946-09-05 | 1949-01-20 | Rupert Martin Bradbury | A new magnesium base alloy |
| CN1609249A (en) * | 2004-09-17 | 2005-04-27 | 中国科学院上海微系统与信息技术研究所 | High corrosion resistant casting magnesium aluminium alloy and producing process thereof |
| JP2005187896A (en) * | 2003-12-26 | 2005-07-14 | Mitsubishi Alum Co Ltd | Heat resistant magnesium alloy casting |
-
2007
- 2007-06-07 CN CNB2007100231646A patent/CN100457943C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB616412A (en) * | 1946-09-05 | 1949-01-20 | Rupert Martin Bradbury | A new magnesium base alloy |
| JP2005187896A (en) * | 2003-12-26 | 2005-07-14 | Mitsubishi Alum Co Ltd | Heat resistant magnesium alloy casting |
| CN1609249A (en) * | 2004-09-17 | 2005-04-27 | 中国科学院上海微系统与信息技术研究所 | High corrosion resistant casting magnesium aluminium alloy and producing process thereof |
Non-Patent Citations (2)
| Title |
|---|
| 变形镁合金的研究、开发及应用. 余琨等.中国有色金属学报，第13卷第2期. 2003 |
| 变形镁合金的研究、开发及应用. 余琨等.中国有色金属学报，第13卷第2期. 2003 * |
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| Publication number | Publication date |
|---|---|
| CN101067177A (en) | 2007-11-07 |
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Effective date of registration: 20170104 Address after: 211224 Jiangsu Province, Nanjing city Lishui District Jing Town Cloud sea Patentee after: NANJING YUNKAI ALLOY CO.,LTD. Address before: Lishui County, Nanjing City, Jiangsu province 211221 Honglan town Pu Village Patentee before: NANJING YUNHAI SPECIAL METALS Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221125 Address after: 211211 No. 11, Kaiping Road, Industrial Market Center, Dongping Street, Lishui District, Nanjing, Jiangsu Patentee after: NANJING YUNHAI SPECIAL METALS Co.,Ltd. Address before: 211224 Yun Hai Road, crystal bridge, Lishui District, Nanjing, Jiangsu Patentee before: NANJING YUNKAI ALLOY CO.,LTD. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 211212 No. 11 Kaiping Road, Dongping Street, Lishui District, Nanjing City, Jiangsu Province Patentee after: Baowu Magnesium Industry Technology Co.,Ltd. Address before: 211211 No. 11, Kaiping Road, Industrial Market Center, Dongping Street, Lishui District, Nanjing, Jiangsu Patentee before: NANJING YUNHAI SPECIAL METALS Co.,Ltd. |