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2 不同工艺X80管线钢的力学性能

Table 2 Mechanical properties of X80 pipeline steel produced with different cooling technology

Rt0.5/MPa Rm/MPa Y/T A50.8/% Cvn /J (-20℃) DWTT /% (-15℃) 1#--Laminar cooling 556 698 0.80 22.2 387 100 2#--Super fast cooling+laminar cooling 585 712 0.82 22.4 363 100