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8 回火后不同冷却方式实验钢的EBSD晶界分布

Fig.8 Grain boundary distribution maps of tempered experimental steels after cooling by water (a), oil (b), air (c) and furnace (d) (Boundaries are indicated by three color solid lines, with red line being misorientation of 2~15°, black line 15~50°, and blue line >50° and Green areas in Fig.8c and Fig.8d represent retained austensite)