Effect of Heat Treatment on Microstructural Evolution of 13Cr Martensitic Stainless Steel
13Cr martensitic stainless steels are widely used in gas industry, which are usually manufactured by quenching-tempering treatment.Microstructural study of 13Cr steel through various heat treatments was carried out for determining the optimum parameters for industry manufacture.After quenching treatment at 975 ℃ for 20 min, precipitation-free martensitic structures were formed.During tempering, recovery of martensite through grain boundaries migration and dislocations annihilation was found to soften the steel.In addition, transformation of needle-like Cr7C3 carbides to the irregular shaped Cr23C6 carbides was observed when tempering temperature is above 710 ℃.The phase transformation induced precipitation strengthening is discussed.The optimum heat treatment parameters of 13Cr steel for avoiding over tempering and the precipitation hardening are found.
13Cr steel Heat treatment Microstructure EBSD TEM
Hou-yu Ma Yin-sheng He Kwon-yeong Lee Keesam Shin
Changwon National University, Changwon 51140, Korea SEAH Changwon Integrated Special Steel, Changwon 51708, Korea
国际会议
The 2016 China Functional Materials Technology and Industry Forum (2016中国国际功能材料大会暨第九届中国功能材料及其应用学术会议)
重庆
英文
29-35
2016-07-25（万方平台首次上网日期，不代表论文的发表时间）