| 双晶Nb的拉伸和循环变形 |
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| 引用本文： | 吴建生,林栋梁. 双晶Nb的拉伸和循环变形[J]. 金属学报, 1996, 32(5): 527-531 |
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| 作者姓名： | 吴建生 林栋梁 |
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| 作者单位： | 上海交通大学 |
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| 摘 要： | 用Ｙ型籽晶通过悬浮区熔法制备了位向差分别为７，９和１２°的双晶，观察和分析了双晶经拉伸和循环变形后的滑移线，发现位向差分别为７，９和１２°的双晶，其饱和应力依次增加，双晶的形变带不受晶界影响。讨论了晶界在形变过程中所起的作用
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| 关 键 词： | 双晶 循环变形 滑移线 铌 |
| 收稿时间： | 1996-05-18 |
| 修稿时间： | 1996-05-18 |
BEHAVIOUR OF Nb BICRYSTALS UNDER TENSION AND CYCLIC DEFORMATION |
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| WU Jiansheng,LIN Dangling. BEHAVIOUR OF Nb BICRYSTALS UNDER TENSION AND CYCLIC DEFORMATION[J]. Acta Metallurgica Sinica, 1996, 32(5): 527-531 |
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| Authors: | WU Jiansheng LIN Dangling |
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| Abstract: | Using Y shape seeds, Nb bicrystals with misorientations 7, 9 and 12°were grown respectively by floating zone method. The tension and cyclic deformation curves of Nb bicrystals have been obtained and compared with that of Nb single crystal. Slip lines on bicrystal specimens after deformation have been observed. It is found that the grain boundary of bicrystal did not affect the deformation bands. Finally the role of the grain boundary during deformation was discussed. |
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| Keywords: | Nb bicrystal cyclic deformation slip line |
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