陈立佳,尹淑英,车欣

• 1:沈阳工业大学材料科学与工程学院

摘要(Abstract)：

为了明确固溶、时效、以及固溶+时效处理对挤压变形Al-4%Mg-1.0%Ce合金循环变形行为的影响,针对不同处理状态的挤压变形Al-4%Mg-1.0%Ce合金进行了总应变幅控制下的低周疲劳实验。结果表明,挤压变形Al-4%Mg-1.0%Ce合金经过热处理后,循环变形抗力降低;不同处理状态的挤压变形Al-4%Mg-1.0%Ce合金均可呈现出循环硬化和循环稳定;在较高的外加总应变幅下,不同处理状态的挤压变形Al-4%Mg-1.0%Ce合金均会发生动态应变时效;固溶处理可以显著降低挤压变形Al-4%Mg-1.0%Ce合金的应变疲劳参数K'和n',时效处理能够明显提高合金的K'和n',而固溶+时效处理对合金的K'和n'影响不大。

关键词(KeyWords)： 铝合金;挤压;热处理;循环变形;动态应变时效

Abstract:

Keywords:

基金项目(Foundation): 辽宁省高等学校优秀人才支持计划(LR201030)

作者(Author): 陈立佳,尹淑英,车欣

DOI: 10.13289/j.issn.1009-6264.2012.06.008

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