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材料研究学报  2006, Vol. 20 Issue (5): 449-453    
  论文 本期目录 | 过刊浏览 |
驻留滑移带与晶界和孪晶界的交互作用
段启强  张辉  莫春立  张哲峰
引用本文:

段启强; 张辉; 莫春立; 张哲峰 . 驻留滑移带与晶界和孪晶界的交互作用[J]. 材料研究学报, 2006, 20(5): 449-453.

全文: PDF(1113 KB)  
摘要: 对含有退火孪晶的多晶铜进行了不同塑性应变幅下的应变疲劳实验,利用扫描电镜及其电子通道衬度技术(SEM-ECC)观察了表面滑移形貌、疲劳裂纹和位错组态,研究了驻留滑移带与晶界和孪晶界的交互作用.结果表明,在晶界附近和远离晶界处观察到位错组态分布的不均匀现象.这种不均匀性导致多晶铜中疲劳裂纹首先沿着普通大角晶界开裂,在孪晶界处由于应变相容性较好而难以产生疲劳裂纹.
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收稿日期: 1900-01-01     
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