超快冷对厚规格X80管线钢组织性能的影响

牛涛, 吴新朗, 安成钢, 姜永文, 张彩霞, 于晨, 代晓莉

Effect of Ultra-Fast Cooling on Microstructure and Performance of Thick X80 Pipeline Steel

NIU Tao, WU Xinlang, AN Chenggang, JIANG Yongwen, ZHANG Caixia, YU Chen, DAI Xiaoli

表1 试验用X80管线钢的成分(质量分数, %)

Table 1 Chemical composition of X80 pipeline steel (mas fraction, %)

C Mn Nb Mo Others Ceq Pcm ≤0.06 1.75 0.06~0.09 0.15~0.25 Cu、Ni、Cr 0.44 0.18