正火型V-N-Ti和Nb-V-Ti海工钢焊接粗晶热影响组织和韧性研究

师仲然, 赵庆凯, 刘登辉, 王天琪, 柴希阳, 罗小兵, 柴锋

Study on Microstructure and Toughness of Simulated Coarse Grain Heated Zone in Normalized V-N-Ti and Nb-V-Ti Marine Steel

SHI Zhongran, ZHAO Qingkai, LIU Denghui, WANG Tianqi, CHAI Xiyang, LUO Xiaobing, CHAI Feng

表1 实验用钢的化学成分

Table1 Chemical composition of the tested steel (mass fraction, %)

Steels C Si Mn P S Als Ti V Nb N Ceq Pcm Nb-V-Ti 0.16 0.16 1.60 0.012 0.003 0.03 0.008 0.02~0.1 0.02~0.04 0.004 0.44 0.25 V-N-Ti 0.15 0.28 1.55 0.009 0.001 0.04 0.011 0.02~0.1 - 0.004~0.015 0.42 0.24