Microstructure and properties of ultrafine - scale bainite steels
An ultra - fine bainitic steel was investigated in present study.The steel was heated t0 850℃ and austenized for 10 min followed by cooling t0 300℃ for isothermal different time for bainitic transformation.The specimens were examined using optical and transmission electron microscope.The experimental results show that the microstructure consists of ultra - fine bainite,martensite and retained austenite.Tensile test results show that the both high strength and good elongation are obtained after isothermal treatment for 90 min and 120 min at 300℃.The better comprehensive property of tested steel is attributed the ultra - fine mixture microstructure of bainite,martensite and retained austenite.The results propose the thermal processing route for a new promising high strength steel.
ultra - fine bainite microstructure property heat treatment
XU Guang LIU Feng ZUROB S Hatem EMBURY David WANG Xiang
Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan Unive Department of Materials Science & Engineering,McMaster University,Hamilton,L8 S 4L7,Canada
国内会议
上海
英文
1-4
2013-06-01（万方平台首次上网日期，不代表论文的发表时间）