庾桃,刘孟迪,文辉,王开,罗荣,方飞松,张靖翊

• 1:重庆大学材料科学与工程学院
• 2:重庆建设工业(集团)有限责任公司

摘要(Abstract)：

采用Gleeble-1500热模拟实验机在变形温度为800~1100℃,应变速率为0.1~10 s-1范围内对27MnCr5齿轮钢进行热压缩实验,研究27MnCr5齿轮钢的动态再结晶行为,构建合金的本构关系和动态再结晶模型,研究变形条件对27MnCr5齿轮钢显微组织的影响。结果表明:变形温度越高,27MnCr5齿轮钢的流动应力越低,动态再结晶体积分数越高;当变形温度升高至1100℃时,晶粒粗化现象很明显,平均晶粒尺寸较大;利用Deform软件对构建的动态再结晶模型进行数值模拟,平均晶粒尺寸误差在20%以内,应力-应变本构关系和动态再结晶模型能较好的预测实验结果。

关键词(KeyWords)： 27MnCr5齿轮钢;本构关系;动态再结晶;数值模拟;平均晶粒尺寸

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金面上项目(51774054)

作者(Author): 庾桃,刘孟迪,文辉,王开,罗荣,方飞松,张靖翊

DOI: 10.13289/j.issn.1009-6264.2018-0043

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