Abstract：The unqualified specimens of Q345R medium and heavy plate were analyzed by metallographic microscope， electron probe and energy dispersive spectrometer. The results showed that there was segregation in the center of the plate，and the bainite structure and inclusions at the segregation were the cause of disqualification. Inclusions and the central bainite could be decreased by optimizing the steel making process and improving the cooling process.
王宝君，臧涛，蔺晓亮. Q345R中厚板探伤不合格原因分析[J]. 物理测试, 2019, 37(6): 55-58.
WANG Bao-jun，ZANG Tao，LIN Xiao-liang. Causes analysis of disqualification of Q345R medium and heavy plate in inspection. PHYSICS EXAMINATION AND TESTING, 2019, 37(6): 55-58.
2019, Vol. 37 
