摘要
采用热膨胀相变仪并结合金相分析和硬度试验,研究了奥氏体化温度和保温时间对3Cr13不锈钢淬火后的显微组织和硬度的影响。结果表明:在980~1030℃奥氏体化,溶入奥氏体中的碳化物较少,奥氏体化时间对钢淬火后的硬度有显著影响,奥氏体化8 min淬火的钢的硬度较奥氏体化3 min淬火的硬度提高了2.4 HRC;在1030~1080℃较高温度奥氏体化,溶入奥氏体中的碳化物较多,在该温度奥氏体化8 min淬火的钢硬度达57 HRC。
Effects of austenitizing temperatures and times at temperature on mirostructure and hardness of 30Cr13 steel after quenching was investigated by the aid of thermal expansion phase transformation instrument in combination with both metallographic examination and hardness test.The results showed that(a)when the steel was austenitized at temperature of 980 to 1030℃,less carbides were dissolved into austenite,time at these temperatures had so a significant influence on hardness of the steel after quenching that hardness of the steel austenitized for 8 min was 2.4 HRC higher than that of the steel austenitized for 3 min;(b)when the steel was austenitized at a higher temperature of 1030 to 1080℃,more carbides were dissolved into austenite,and the steel austenitized at these temperatures for 8 min exhibited as hardness as 57 HRC after quenching.
作者
乔晓燕
赖承班
陈卓
闵永安
QIAO Xiaoyan;LAI Chengban;CHEN Zhuo;MIN Yong’an(School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;Zwilling J.A. Henckels Shanghai Ltd, Shanghai 201112, China)
出处
《上海金属》
CAS
2021年第5期33-37,44,共6页
Shanghai Metals
基金
国家重点研发计划(No.2016YFB0300400,No.2016YFB0300404)。
关键词
马氏体不锈钢
马氏体转变
淬火工艺
碳化物
硬度
martensitic stainless steel
martensitic transformation
quenching process
carbide
hardness
