| Superplasticity and diffusion bonding of magnesium alloy ZK60 |
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| 作者姓名： | 于彦东 蒋海燕 李强 翟春泉 丁文江 |
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| 作者单位： | School of Materials Science and Engineering Harbin University of Science and Technology Harbin 150040 China，Light Alloy Net Forming National Engineering Research Center Shanghai Jiaotong University Shanghai 200030 China，Light Alloy Net Forming National Engineering Research Center Shanghai Jiaotong University Shanghai 200030 China，Light Alloy Net Forming National Engineering Research Center Shanghai Jiaotong University Shanghai 200030 China，Light Alloy Net Forming National Engineering Research Center Shanghai Jiaotong University Shanghai 200030 China，Light Alloy Net Forming National Engineering Research Center Shanghai Jiaotong University Shanghai 200030 China |
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| 基金项目： | Project （E3080） supported by Natural Science Foundation of Heilong, jiang Province; Project（10541046） supported by Scientific Item of Education 0ffice of Heilongjiang Province |
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| 摘 要： | 1 INTRODUCTIONRecently , the use of magnesium alloys asstructural materials has significantlyincreased,forits good damping capacity , di mension stability ,machinability and lowcasting costs . But magnesi-umalloys normally exhibit lowductility near roomtemperature because of their HCP structure .Therefore ,it is necessary to i mprove the ductilityof these alloys for their use as structural compo-nents1 3].In manufacturing,superplastic forming is of-ten combined with diffusion bonding, w…
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| 关 键 词： | 镁合金 超塑性 扩散焊 比强度 ZK60合金 |
| 文章编号： | 1003-6326（2005）06-1253-05 |
| 收稿时间： | 2005-06-26 |
| 修稿时间： | 2005-09-19 |
Superplasticity and diffusion bonding of magnesium alloy ZK60 |
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| YU Yan-dong,JIANG Hai-yan,LI Qiang,ZAI Chun-quan,DING Wen-jiang.Superplasticity and diffusion bonding of magnesium alloy ZK60[J].Transactions of Nonferrous Metals Society of China,2005,15(6):1253-1257. |
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| Authors: | YU Yan-dong JIANG Hai-yan LI Qiang ZAI Chun-quan DING Wen-jiang |
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| Abstract: | Superplasticity of as-rolled ZK60 magnesium alloy sheets, with the average grain size of 8.2μm, was investigated at a strain rate of 5.56×10-4-5.56×10-2 s-1 at 573-673K. The microstructure evolution during the superplastic deformation shows that the alloy deforms in a superplastic manner at the temperature from 573K to 673K. Diffusion bonding tests were carried out on the Gleeble-1500 testing machine and the specimens were successfully diffusion bonded at the superplastic temperature. The maximum specific strength is 0.82 at a bonding pressure of 10MPa for holding time 1h at 673K. The microstructures of the joints were observed through OM and SEM. There is no bond line visible in the original interfaces of sound joint with high specific strength. |
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| Keywords: | ZK60 magnesium alloy lap bonding superplasticity specific strength |
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