党朋,许晓嫦,刘志义,于文斌,宁爱林,曾苏民

• 1:中南大学材料科学与工程学院
• 2:中南大学材料科学与工程学院
• 3:中南大学材料科学与工程学院
• 4:中南大学材料科学与工程学院

摘要(Abstract)：

利用透射电镜(TEM)研究了等径角挤压(ECAP)和多向压缩(MAC)两种强塑性变形方式对Al-Cu合金中θ′相变形过程中演变。结果表明,随着应变量的增加,析出相先是与基体失去位向关系,随后破碎、回溶。在相同应变量下,MAC变形使析出相回溶的速度明显高于ECAP变形。应变引起析出相回溶受界面反应型回溶机理和界面弯曲效应机理共同作用。

关键词(KeyWords)： 等径角挤压(ECAP);多向压缩(MAC);Al-Cu合金;析出相;回溶

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(50571069);; 湖南省自然科学基金资助项目(05JJ40005)

作者(Author): 党朋,许晓嫦,刘志义,于文斌,宁爱林,曾苏民

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