| Flow stress of 2197 Al-Li alloy during hot compression deformation |
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| 作者姓名： | 魏修宇 郑子樵 付欣 陈秋妮 |
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| 作者单位： | School of Materials Science and Engineering, Central South University, Changsha 410083, China |
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| 基金项目： | Project（MKPT-2004-19ZD） supported by the National Defense Science, Technology and Industry Committee of China |
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| 摘 要： | The flow stress behavior of 2197 Al-Li alloy during hot compression deformation was studied in the strain rate range from 0.01 to 10 s^-1 and the temperature range from 360 to 510℃ by isothermal compression test on a Gleeble-1500 thermal-mechanical simulator. The results show that the flow stress of 2197 Al-Li alloy decreases with the increase of deformation temperature and increases with the increase of strain rate. The peak flow stress during high temperature deformation can be represented by Z parameter in a hyperbolic sine function. The analytical expression of peak flow stress was fitted with the hot deformation activation energy of 260.6 kJ/mol.
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| 关 键 词： | 铝 锂 合金 热成型技术 压缩技术 |
| 收稿时间： | 2007-07-15 |
| 修稿时间： | 2007-09-10 |
Flow stress of 2197 Al-Li alloy during hot compression deformation |
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| WEI Xiu-yu, ZHENG Zi-qiao, FU Xin, CHEN Qiu-ni.Flow stress of 2197 Al-Li alloy during hot compression deformation[J].Transactions of Nonferrous Metals Society of China,2007,17(A01):280-284. |
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| Authors: | WEI Xiu-yu ZHENG Zi-qiao FU Xin CHEN Qiu-ni |
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| Abstract: | |
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| Keywords: | 2197 Al-Li alloy hot compression deformation flow stress Z parameter |
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