贾冲,张喜燕,周世杰

• 1:西南交通大学材料科学与工程学院
• 2:重庆大学材料科学与工程学院
• 3:广西大学物理科学与工程技术学院

摘要(Abstract)：

在室温条件下对纳米金属镍进行了不同程度的冷轧变形,利用X射线衍射分析和高分辨透射电镜的观察对纳米金属镍的微观结构演变以及塑性变形机制进行了研究。结果表明:形变量ε<20%时,晶粒旋转为主要的变形方式;当20%<ε<30%时,位错活动与晶粒旋转共同协调变形;ε>30%时,晶界发射的不全位错,形成变形孪晶与层错,主导变形。

关键词(KeyWords)： 镍;纳米晶体;晶粒旋转;位错;孪晶

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(5046100);; 广西自然科学基金技术攻关项目(0575-18;0639003);; 广西大学重点基金(2005Z)

作者(Author): 贾冲,张喜燕,周世杰

DOI: 10.13289/j.issn.1009-6264.2010.03.007

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