摘要
采用显微组织表征和硬度测试研究了0Cr16Ni5Mo1马氏体不锈钢连续冷却转变动力学和显微组织演化规律。结果表明:0Cr16Ni5Mo1马氏体不锈钢在1100℃×60 min奥氏体化条件下,以0.5~100℃/s的速度冷却时仅发生马氏体转变,马氏体相变的开始温度(Ms)约为212℃,结束温度(Mf)约为25.3℃,组织均为板条马氏体,硬度约为371 HV。冷却速率的变化对相变温度、室温组织和硬度无显著影响。采用K-M方程描述马氏体相变过程,其相变动力学参数α约为0.0317。
Based on the dilatometric curves and combined with microstructure characterization and hardness test,the continuous cooling transformation kinetics and microstructure evoluation of the 0Cr16Ni5Mo1 martensitic stainless steel was investigated.The results show that after austenitizing at 1100℃for 60 min,only the martensitic transformation occurs when cooled at 0.5-100℃/s,the Ms and Mf temperature are about 212℃and 25.3℃respectively,the microstructure is lath martensite,and the hardness is about 371 HV,which means the cooling rate has no obvious effect on them.The Koistinen-Marburger equation can be used to describe the martensitic transformation,and the transformation kinetic parameterαis about 0.0317.
作者
宋逸思
李传维
陈益华
李克
胡海鹏
顾剑锋
Song Yisi;Li Chuanwei;Chen Yihua;Li Ke;Hu Haipeng;Gu Jianfeng(School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;AEEC South Industry Company Limited,Zhuzhou Hunan 412002,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2021年第10期12-17,共6页
Heat Treatment of Metals
基金
国家自然科学基金(51081126)
中国航发南方工业有限公司科技专项课题(K19131)。
