魏铁石,王晶,黄宝旭,马杰,赵性川,王长征

• 1:聊城大学材料科学与工程学院
• 2:海军飞行学院

摘要(Abstract)：

基于差示扫描量热法(DSC)实验数据,采用John-Mehl-Avrami(JMA)方程研究了球墨铸铁非等温奥氏体化动力学。结果表明:球墨铸铁的最佳奥氏体化温度在1173 K左右,奥氏体化过程主要受铁原子的扩散控制;奥氏体固态相变的动力学参数n随加热速率的增加而减小,但生长速率因子系数k_0基本上为一常数,约为6.1×10~9。在此基础上研究了球墨铸铁奥氏体等温转变动力学曲线,并且通过金相观察法对奥氏体转变曲线进行了验证,与计算结果符合较好。

关键词(KeyWords)： 球墨铸铁;奥氏体化;差示扫描量热法(DSC);转变动力学

Abstract:

Keywords:

基金项目(Foundation): 山东省自然基金(ZR2012EMM007);; 山东省科技发展计划项目(2014GGX102016);; 聊城大学大学生科技文化创新基金(26312171922)

作者(Author): 魏铁石,王晶,黄宝旭,马杰,赵性川,王长征

DOI: 10.13289/j.issn.1009-6264.2017-0387

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