Microstructure and Mechanical Properties of the 25Si2MnCrMo Martensite Microalloyed Steel
来源期刊：材料热处理学报2004年第5期
论文作者：GU Nan-ju LIU Jian MA Xiao-li SONG Xiao-yan PENG Hui-fen WANG Wen-shui
关键词：25Si2MnCrMo; microalloyed steel; martensite;
摘 要：A martensitic microalloyed steel, 25Si2MnCrMo, was developed to meet the demands of the high-strength bars.Microstructure and mechanical properties of the steel were evaluated by using optical metallography, scanning electron microscopy, transmission electron microscopy, dilatometry and tensometry. Those measurements suggested that the steel consisted of martensite and retained austenite, which existed between the martensitic laths in a stable thin film, and that the steel showed very high tensile strength of 1400 MPa and good ductility of 15% in elongation after 300℃ tempering.
GU Nan-ju1，LIU Jian2，MA Xiao-li1，SONG Xiao-yan3，PENG Hui-fen1，WANG Wen-shui1
(1.School of Material Science & Engineering, Hebei University of Technology, Tianjin, China;
2.School of Mechanical Engineering, Hebei University of Technology, Tianjin, China;
3.The College of Material Science & Engineering, Beijing University of Technology, Beijing, China)
摘要:A martensitic microalloyed steel, 25Si2MnCrMo, was developed to meet the demands of the high-strength bars.Microstructure and mechanical properties of the steel were evaluated by using optical metallography, scanning electron microscopy, transmission electron microscopy, dilatometry and tensometry. Those measurements suggested that the steel consisted of martensite and retained austenite, which existed between the martensitic laths in a stable thin film, and that the steel showed very high tensile strength of 1400 MPa and good ductility of 15% in elongation after 300℃ tempering.
关键词:25Si2MnCrMo; microalloyed steel; martensite;
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