计云萍,刘宗昌,李文学,段宝玉,任慧平

• 1:内蒙古科技大学材料与冶金学院

摘要(Abstract)：

将12CrMo、20CrMo、35CrMo和9CrMo钢在不同温度奥氏体化后,经中温等温转变,采用金相显微镜和QUANTA-400环境扫描电子显微镜观察了贝氏体的组织形貌,分析了其形成机理。结果表明,在低碳铬钼钢中形成无碳贝氏体;中碳铬钼钢的上贝氏体也是无碳贝氏体,下贝氏体中则有碳化物析出;而在高碳铬钼钢中,形成羽毛状的上贝氏体和竹叶状的下贝氏体。这表明含碳量对贝氏体的组织形貌有重要的影响。当贝氏体铁素体片条之间不能合并时,形成无碳贝氏体,随着含碳量的增加,当有碳化物析出时,就会形成羽毛状的上贝氏体或竹叶状的下贝氏体。

关键词(KeyWords)： 贝氏体;等温淬火;碳化物

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 计云萍,刘宗昌,李文学,段宝玉,任慧平

DOI: 10.13289/j.issn.1009-6264.2010.09.012

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