强磁场下Fe-0.47C-2.3Si-3.2Mn钢的高温等温相变动力学Kinetics of high temperature isothermal phase transformation of Fe-0.47C-2.3Si-3.2Mn steel under high magnetic field
陈健豪,周晓玲,孟兰,李增
摘要(Abstract):
研究了19.8 T强磁场下Fe-0.47C-2.3Si-3.2Mn中碳硅锰钢在共析点以上较高温度的珠光体等温相变过程。讨论了不同处理条件下所获得的组织形貌特征,并对相变动力学进行了定量、半定量的统计分析。结果表明:相比12 T磁场,19.8 T磁场使得磁诱发珠光体(MIP)相变可以在更高的温度发生;珠光体(P)中两相的形成速度不同,两组成相面积分数的比值处于动态变化中,强磁场下铁素体(F)具有快速生长优势,渗碳体(Cem)的形成速度滞后于铁素体;MIP中,随等温温度的升高,粒状珠光体相对于片状具有更大的增量。
关键词(KeyWords): 强磁场;等温相变;珠光体;动力学
基金项目(Foundation): 国家自然科学基金资助项目(50971067)
作者(Author): 陈健豪,周晓玲,孟兰,李增
DOI: 10.13289/j.issn.1009-6264.2014.05.023
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