440 MPa级高强钢焊缝金属的断裂韧性

曾道平, 安同邦, 郑韶先, 代海洋, 曹志龙, 马成勇

Fracture Toughness of Weld Metal of 440 MPa Grade High-strength Steel

ZENG Daoping, AN Tongbang, ZHENG Shaoxian, DAI Haiyang, CAO Zhilong, MA Chengyong

图5 焊缝金属中的M-A组元及其显微硬度照片

Fig.5 Photos of M-A constituent and microhardness in weld metal (a) columnar crystal, (b) interpass, (c) microhardness