C和W对低合金Cr-Mo钢焊缝金属组织和冲击韧性的影响

朱高文, 吴栋, 陆善平

Effect of C- and W-content on Microstructure and Toughness of Weld Metal for Low Alloy Cr-Mo Steel

ZHU Gaowen, WU Dong, LU Shanping

图16 二次裂纹的SEM图

Fig.16 SEM images of secondary cracks (a) secondary cracks in necklace microstructure, (b) the enlarged view of the secondary crack