李帅,周荣锋,张玲,蒋业华,周荣

• 1:昆明理工大学材料科学与工程学院
• 2:昆明理工大学分析测试研究中心

摘要(Abstract)：

对过共晶高铬铸铁奥氏体化过程中进行脉冲电流处理,采用光学显微镜观察并研究了脉冲电流对碳化物形态和尺寸的影响。结果表明,过共晶高铬铸铁高温保温过程中施加脉冲电流能够促进初生碳化物和共晶碳化物细化和粒化。脉冲电流促使碳化物的细化和粒化速度与碳化物的初始尺寸有关,尺寸较小的碳化物细化和粒化速度较快,尺寸较大的碳化物细化和粒化的速度较慢。

关键词(KeyWords)： 过共晶高铬铸铁;脉冲电流;碳化物;细化和粒化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51261011);; 云南省科技计划项目(2010DH025);; 云南省人才培养基金资助项目(2009CI024)

作者(Author): 李帅,周荣锋,张玲,蒋业华,周荣

DOI: 10.13289/j.issn.1009-6264.2013.12.014

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