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11 回火后不同冷却方式实验钢的冲击断口SEM照片

Fig.11 SEM fractographs of Charpy impact samples of tempered experimental steels after cooling with different way (The zones marked by dotted lines are cleavage areas. Figs.11b, d, f, h are magnified images of the zones marked by dotted lines in Figs.11a, c, e, g, respectively)