王丽君,关小军,赵健,禹宝军,曾庆凯,孙琴,刘千千

• 1:山东大学材料液固结构演变与加工教育部重点实验室
• 2:山东大学材料科学与工程学院

摘要(Abstract)：

采用热模拟试验、动态再结晶唯象理论和回归分析,研究了HPS485wf桥梁结构钢在温度为1273～1473 K,变形速率为0.1～10 s-1条件下热压缩变形的动态再结晶行为。分析了流变应力的变化规律和加工硬化率-应变图;判断了该钢发生动态软化的类型;得到了形变激活能和临界参数与温度补偿应变速率因子Z之间的关系;建立了相应的高温变形本构关系方程。

关键词(KeyWords)： HPS485wf钢;奥氏体;动态再结晶;本构方程;变形激活能

Abstract:

Keywords:

基金项目(Foundation): 高等学校博士点专项科研基金(200804220021);; 山东省自然科学基金(Y2007F06);; 山东省国际科技合作计划项目(2006013)

作者(Author): 王丽君,关小军,赵健,禹宝军,曾庆凯,孙琴,刘千千

DOI: 10.13289/j.issn.1009-6264.2010.10.005

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