贺连芳,李辉平,赵国群

• 1:山东大学材料液固结构演变与加工教育部重点实验室

摘要(Abstract)：

为了找到淬火过程中零件产生不规则扭曲变形的原因,选择了H型截面零件为研究对象,建立了相应的有限元分析模型,利用自开发的淬火过程有限元模拟软件对温度、组织和应力/应变进行了耦合分析。通过有限元模拟,得到了温度变化、相变及相变塑性对残余应力及淬火变形的影响,给出了零件内部弹性区及塑性区的演变过程。分析结果表明:零件在淬火过程中经历"弹性-塑性-弹性-塑性-弹性"的演变过程;在淬火过程中,相变塑性导致零件发生不均匀、无规律的扭曲变形。

关键词(KeyWords)： 淬火;残余应力;变形;有限元

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(50875154);; 教育部“长江学者和创新团队发展计划”(IRT0931);; 山东大学自主创新基金(2010TS035)

作者(Author): 贺连芳,李辉平,赵国群

DOI: 10.13289/j.issn.1009-6264.2011.01.024

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