| Strain rate sensitivity of tensile properties in high Nb containing TiAl alloys |
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| 引用本文： | Jianfeng Gao Xiangjun Xu Junpin Lin Xiping Song Yanli Wang Guoliang Chen. Strain rate sensitivity of tensile properties in high Nb containing TiAl alloys[J]. 北京科技大学学报(英文版), 2005, 12(6): 535-539 |
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| 作者姓名： | Jianfeng Gao Xiangjun Xu Junpin Lin Xiping Song Yanli Wang Guoliang Chen |
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| 作者单位： | State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China |
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| 基金项目： | This work was financially supported by the National Natural Science Foundation of China （No.50274005） and the State Key Project for Fundamental Research Developing Plan （No. G2000067206-2）. |
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| 摘 要： |
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| 关 键 词： | 钛铝合金 应变率 拉伸性能 热激发 铌 |
| 收稿时间： | 2005-01-28 |
Strain rate sensitivity of tensile properties in high Nb containing TiAl alloys |
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| Jianfeng Gao,Xiangjun Xu,Junpin Lin,Xiping Song,Yanli Wang,Guoliang Chen. Strain rate sensitivity of tensile properties in high Nb containing TiAl alloys[J]. Journal of University of Science and Technology Beijing, 2005, 12(6): 535-539 |
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| Authors: | Jianfeng Gao Xiangjun Xu Junpin Lin Xiping Song Yanli Wang Guoliang Chen |
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| Abstract: | The effect of strain rate on the yield strength of high Nb containing TiAl alloy was studied. The results show that the strain rate sensitivity varies with the test temperature, and the yield strength is not sensitive to the strain rate at room temperature but significantly sensitive to the strain rate at high temperature. An increase of the strain rate or a decrease of the temperature results in an obvious change of fracture mode. It is found that the strain rate sensitivity of this alloy varying with temperature is due to the dislocation climb generated at high temperature. |
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| Keywords: | TiAl alloys strain rate tensile properties thermal activation |
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