谢鲲,孙金全,夏鹏成,曹梅青,岳丽杰

• 1:山东科技大学材料科学与工程学院

摘要(Abstract)：

将电火花线切割316奥氏体不锈钢试样在450℃下进行气体渗氮8 h。分析原始面和线切割面渗氮后的显微组织、渗层相结构及元素分布,并对其硬度、耐磨性和耐蚀性进行测试。结果表明,线切割面渗氮后得到了更厚的渗层,渗层由S相(扩展奥氏体相)组成,渗氮后硬度和耐磨性大幅提高,而耐蚀性基本不变。线切割促进渗氮的原因在于电火花加工过程中快速冷却形成表层马氏体,促进活性氮原子的快速扩散。

关键词(KeyWords)： 316不锈钢;气体渗氮;电火花加工;奥氏体;马氏体

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51208288);; 山东省高校科技计划项目(J12LA53);; 山东省优秀中青年科学家科研奖励基金(BS2011CL032);; 山东省泰山学者建设工程专项经费资助项目

作者(Author): 谢鲲,孙金全,夏鹏成,曹梅青,岳丽杰

DOI: 10.13289/j.issn.1009-6264.2013.12.026

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