陈睿恺,顾剑锋,韩利战,潘健生

• 1:上海市激光制造与材料改性重点实验室
• 2:上海交通大学材料科学与工程学院

摘要(Abstract)：

研究了30Cr2Ni4MoV低压转子用钢加热过程中的连续相变动力学与等温相变动力学。在测定该钢在0.008～20 K/s加热速率下奥氏体化膨胀曲线的基础上,运用Kissinger方法对实验数据进行基于非等温相变Johnson-Mehl-Avrami(J-M-A)模型的动力学分析,确定了模型中的参数:奥氏体化相变激活能Q约为2.367×106J/mol,J-M-A指数n约为0.2448,指前因子lnk0约为270.5。根据这些参数和J-M-A方程可进而获得等温奥氏体化相变动力学曲线。结果表明,非等温连续相变动力学曲线中包含等温相变动力学信息。对由于孕育期极短而难以准确测定的等温相变动力学曲线,从连续转变动力学数据抽取得到是一种可行而有效的方法。

关键词(KeyWords)： 30Cr2Ni4MoV钢;奥氏体化动力学;热膨胀分析;J-M-A方程

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展(973)计划(2011CB012904);; “高档数控机床与基础制造装备”重大专项(2011ZX04014-052,2012ZX04012011)

作者(Author): 陈睿恺,顾剑锋,韩利战,潘健生

DOI: 10.13289/j.issn.1009-6264.2013.01.029

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