Effect of Heat Treatment on Reversed Austenite in Cr15 Super Martensitic Stainless Steel

• Published in: Journal of iron and steel research, international Vol. 20; no. 5; pp. 61 - 65
• Main Authors: JIANG, Wen, ZHAO, Kun-yu, YE, Dong, LI, Jun, LI, Zhi-dong, SU, Jie
• Format: Journal Article
• Language: English
• Published: Singapore Elsevier Ltd 01.05.2013; Springer Singapore
• Subjects: Applied and Technical Physics; Austenite; Cr15; Engineering; Heat treatment; Iron and steel industry; Machines; Manufacturing; martensite; Martensitic stainless steels; Materials Engineering; Materials Science; Metallic Materials; Physical Chemistry; Processes; reversed austenite; Steels; super martensitic stainless steel; Tempered martensite; Tempering; Volume fraction; 体积分数; 回火温度; 回火马氏体; 显微组织; 热处理; 电子显微镜; 逆转奥氏体; 马氏体不锈钢; Cr15; heat treatment; reversed austenite; super martensitic stainless steel; martensite
• ISSN: 1006-706X; 2210-3988
• DOI: 10.1016/S1006-706X(13)60099-0

The effect of different heat treatments on the reversed austenite in Cr15 super martensitic stainless steel was investigated. The experimental results indicate that the microstructure of the steel is composed of tempered martensite and diffused reversed austenite after quenching at 1050 °C and tempering from 550 to 750 °C. The volume fraction and size of reversed austenite increase with increasing tempering temperature and both of them reach the maximum value at 700 °C. The volume fraction and size of reversed austenite decrease when the temperature is above 700 °C. The transmission electron microscope (TEM) results indicate that the orientation relationship between tempered martensite and reversed austenite belongs to Kurdjmov-Sach (K-S) relationship.