淬火冷却速率对海洋平台用Ni-Cr-Mo-B钢性能的影响

张守清, 胡小锋, 杜瑜宾, 姜海昌, 庞辉勇, 戎利建

Effect of Quenching Cooling Rate on Mechanical Properties of a Ni-Cr-Mo-B Steel for Offshore Platform

ZHANG Shouqing, HU Xiaofeng, DU Yubin, JIANG Haichang, PANG Huiyong, RONG Lijian

图2 不同冷却速率实验钢的低倍SEM照片

Fig.2 Low magnified SEM images of experimental steels by different cooling rates (LM-lath martensite; LB-lath bainite; GB-granular bainite; F- ferrite; PAGB-prior austenite grain boundary). (a) 100℃/s (b) 20℃/s (c) 10℃/s (d) 5℃/s (e) 2℃/s (f) 1℃/s (g) 0.5℃/s (h) 0.2℃/s (i) 0.02℃/s