边迪,彭兴东,张红梅,姜正义

• 1:辽宁科技大学材料与冶金学院
• 2:澳大利亚伍伦贡大学机械材料和机电一体化学院

摘要(Abstract)：

采用DT-C539微冲压机、光学显微镜、扫描电镜、透射电镜和拉伸实验机等研究了晶粒尺寸效应对纯铜微冲压杯形件变形行为的影响。结果表明:随着晶粒尺寸的增大,杯形件褶皱和凹坑数量增加;从厚度分布来看,随着晶粒尺寸增大,最薄区的厚度与平均厚度的差值从10μm增加到14μm,越容易出现危险区;通过冲压力和位移的曲线可以得出:当晶粒尺寸从10μm增加到35μm时,最大冲压力从37.7 N降低到32.6 N;当晶粒尺寸从35μm增加到68μm时,最大冲压力从32.6 N增加到了33.4 N。

关键词(KeyWords)： 晶粒尺寸效应;微冲压;表面形貌;厚度分布;冲压力

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51474127)

作者(Author): 边迪,彭兴东,张红梅,姜正义

DOI: 10.13289/j.issn.1009-6264.2018-0355

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