MICROSTRUCTURE EVOLUTION AND MECHANICAL PROPERTIES OF GRADE E690 OFFSHORE PLATFORM STEEL
The E690 grade offshore platform steel was obtained by top and bottom blowing converter,curved spray continuous casting machine and thermo-mechanical control processing(TMCP).The static continuous cooling transformation curves(CCT curves)of the rolled plate were drawn by adopting thermal expansion method and metallographic analysis.The microstructures at different cooling rates were observed by optical microscope(OM)and scanning electron microscope(SEM).Results showed that the super-cooled austenite in tested steel was relatively stable and there was little high temperature microstructure transformation at the cooling rate of 0.1℃/s.The regression model of phase transformation temperature and cooling rates were obtained.According to the results of orthogonal experiment,the most optimal heat treatment process was firstly heated at 890℃,wind cooling and then tempered at 630℃ for 60 min.
Offshore Platform Steel Static CCT Curves Regression Model Orthogonal
Shuai QIN Renbo SONG Wenming XIONG Zhijun LIU Zhonghong WANG Ke GUO
School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing,100 School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing,100 Mining Design & Research Institute of Anshan Iron & Steel Groups Corporation Anshan,Anshan 114002,Ch Mining Design & Research Institute of Anshan Iron & Steel Groups Corporation Anshan,Anshan 114002,Ch
国内会议
杭州
英文
1117-1123
2015-11-11（万方平台首次上网日期，不代表论文的发表时间）