张秀妹,彭开萍

• 1:福州大学材料科学与工程学院

摘要(Abstract)：

对具有不同层错能的材料:Q235钢、纯铜和H62黄铜分别进行模压形变试验,并对其模压形变后的显微组织和力学性能进行研究。结果表明:模压形变可以有效地细化材料的晶粒尺寸;金属材料的层错能越低,晶粒细化效果越好;随着模压道次的增加材料的显微硬度升高;层错能低的H62黄铜,随形变道次增大硬度增加幅度更高。中高层错能的纯铜和Q235钢主要以位错机制细化晶粒,低层错能的H62黄铜主要以位错机制和孪生方式共同作用使晶粒细化。

关键词(KeyWords)： 模压形变;大塑性变形;晶粒细化;Q235钢;纯铜;H62黄铜;层错能

Abstract:

Keywords:

基金项目(Foundation): 福建省自然科学基金资助项目(2011J01290)

作者(Author): 张秀妹,彭开萍

DOI: 10.13289/j.issn.1009-6264.2014.10.015

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