| 铜双晶体循环变形的晶界强化效应 |
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| 引用本文： | 张哲峰,王中光,李广义.铜双晶体循环变形的晶界强化效应[J].材料研究学报,1998,12(6):587-593. |
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| 作者姓名： | 张哲峰 王中光 李广义 |
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| 作者单位： | 中国科学院金属研究所材料疲劳与断裂国家重点实验室 |
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| 基金项目： | 国家自然科学基金!59701006 |
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| 摘 要： | 用组合双晶体（ＣＢ）及实际双晶体（ＲＢ）研究平行晶界在铜双晶体循环变形过程中的强化作用，结果表明随双晶体变小，其循环应力升高，晶界作用增强，扫描电镜观察发现晶界附近出现以次滑移为主的晶界影响区，结合双晶体的循环应力－应变响应和晶界影响区，讨论了双晶体的晶界强化机制。
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| 关 键 词： | 铜双晶体 循环变形 晶界影响区 晶界强化 |
| 收稿时间： | 1998-12-25 |
| 修稿时间： | 1998-12-25 |
STRENGTHENING EFFECT OF GRAIN BOUNDARV ON COPPER BICRYSTAL UNDER CYCLIC LOADING |
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| ZHANG Zhefeng,WANG Zhongguang,LI Guangyi.STRENGTHENING EFFECT OF GRAIN BOUNDARV ON COPPER BICRYSTAL UNDER CYCLIC LOADING[J].Chinese Journal of Materials Research,1998,12(6):587-593. |
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| Authors: | ZHANG Zhefeng WANG Zhongguang LI Guangyi |
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| Affiliation: | ZHANG Zhefeng,WANG Zhongguang,LI Guangyi(State Key Laboratory for Fatigue and fracture of Materials,Institute of Metal Research,The Chinese Academy of Sciences,Shenyang) |
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| Abstract: | The Strengthening effect of grain boundary (GB) on copper bicrystals was investigated by using combined bicrystals (CB) and real bicrystals (RB) with different sizes. It was found that cyclic stress and strengthening effect of GB increased with decreasing the size of the bicrystal RB. Sudece observation showed that a GB affected zone (GBAZ) with second slip system appeared in the vicinity of the GB. Combining the cyclic stress-strain response and the GBAZ, the mechanism of the GB strengthening effect on the bicrystal was discussed. |
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| Keywords: | copper bicrystal cyclic deformation GB affected zone GB strengthening |
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