含氮耐蚀塑料模具钢的组织与性能
Microstructure and Properties of Corrosion Resistant Plastic Die Steel Containing Nitrogen
摘 要
采用光学显微镜、扫描电镜、硬度计和冲击试验机等研究了不同氮含量耐蚀4Cr16Mo塑料模具钢在不同热处理后的显微组织、硬度和冲击性能。结果表明: 添加氮后试验钢的淬火峰值硬度比4Cr16Mo钢的高出2 HRC, 其最佳淬火温度为1 040~1 050 ℃; 添加氮提高了4Cr16Mo钢在不同温度回火后的硬度, 且在450 ℃出现二次硬化峰, 其值比4Cr16Mo钢二次硬化峰的硬度高6 HRC; 4Cr16Mo钢中析出的碳化物呈链状、棒状分布, 加入氮后钢中碳化物呈球状分布。
氮含量
硬度
二次硬化
4Cr16Mo plastic die steel
nitrogen content
hardness
secondary hardening
Abstract
The microstructure, hardness and impact property of the 4Cr16Mo corrosion resistant plastic die steel with different nitrogen contents after different heat treatments were studied by OM, SEM, sclerometer, impact testing machine and so on. The results show that quenching peak hardness of the steel adding nitrogen was 2 HRC higher than the 4Cr16Mo steel, and the optimal quenching temperature was 1 040-1 050 ℃. Adding nitrogen increased the hardness of the 4Cr16Mo steel tempered after different temperatures, and the secondary hardening peak appeared at 450 ℃, which was 6 HRC higher than 4Cr16Mo steel. The carbides precipitated from 4Cr16Mo steel showed chain and bar distribution, and showed globular distribution after adding nitrogen.
中图分类号 TG142.1 TG142.45
所属栏目
基金项目 国家“十一五”科技支撑计划项目(2007BAE51B04); 上海市重点学科建设项目(S30107)
收稿日期 2010/7/4
修改稿日期 2011/2/25
网络出版日期
作者单位点击查看
备注袁森(1985-), 男, 陕西西安人, 硕士研究生。
引用该论文: YUAN Sen,WU Xiao-chun. Microstructure and Properties of Corrosion Resistant Plastic Die Steel Containing Nitrogen[J]. Materials for mechancial engineering, 2011, 35(7): 61～64
袁森,吴晓春. 含氮耐蚀塑料模具钢的组织与性能[J]. 机械工程材料, 2011, 35(7): 61～64
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参考文献
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【2】金永华.5Cr15MoV马氏体不锈钢的热处理[J].技术与工艺, 2005(4): 31-35.
【3】赵亮, 马党参, 刘建华, 等.淬回火工艺对马氏体不锈钢3Cr17Mo组织和力学性能的影响[J].特殊钢, 2006, 27(2): 58-60.
【4】SCHNEIDER R, SAMMT K, RABITSCH R, et al. Heat treatment and properties of nitrogen alloyed, martensitic, co-rrosion-resistant steels[C]//Transactions of Materials and Heat Treatment Proceedings of the 14th IFHTSE Congress A. Melbourn: [s.n.], 2004: 582-587.
【5】PERKO J, REDL C, LEITNER H. Influence of heat treatment on the microstructure and toughness of BHLER M333 isoplast steel[J].Lametallurgia Italiana, 2009, 4: 1-5.
【6】LEDA H. Nitrogen in martensitic stainless steels[J].Journal of Materials Processing Technology, 1995, 53: 263-272.
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