徐文帅,王春旭,厉勇,项金钟,黄顺喆,韩顺

• 1:云南大学物理科学技术学院
• 2:钢铁研究总院特殊钢研究所

摘要(Abstract)：

利用金相实验方法,基于实验数据,应用Beck、Hillert、Sellars数学模型研究了40CrNi2MoE钢在加热温度850~1200℃和保温时间30~480 min下的奥氏体晶粒长大规律。结果表明,随加热温度升高和保温时间延长,40CrNi2MoE钢奥氏体晶粒逐渐长大,当加热温度超过1050℃或保温时间超过120 min时,试验钢奥氏体晶粒开始粗化。通过对Beck、Hillert和Sellars 3种晶粒长大数学模型对比分析,Sellars模型对40CrNi2MoE钢的奥氏体晶粒尺寸预测具有较高的精度,其奥氏体晶粒长大模型方程为:当温度为850℃≤T≤1050℃时,D5.49Sellars=7.64×1021texp(-390081/(RT));当温度为1050℃≤T≤1200℃时,D8.13Sellars=8.04×1041texp(-771322/(RT))。

关键词(KeyWords)： 40CrNi2MoE钢;奥氏体;晶粒长大;Sellars模型

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 徐文帅,王春旭,厉勇,项金钟,黄顺喆,韩顺

DOI: 10.13289/j.issn.1009-6264.2014.08.040

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