临界退火工艺对500 MPa级风电用钢焊接接头断裂韧性的优化

高崇, 熊理晞, 陈子豪, 梁治智, 麻衡, 何康, 何金珊, 庞建超, 张哲峰

Optimization of Fracture Toughness of Welded Joints of Q500 Steel Plates by Intercritical Annealing

GAO Chong, XIONG Lixi, CHEN Zihao, LIANG Zhizhi, MA Heng, HE Kang, HE Jinshan, PANG Jianchao, ZHANG Zhefeng

图3 各焊接接头的显微硬度分布

Fig.3 Microhardness distributing curves of the welded joints (a) OR-WM, (b) 720-WM, (c) 750-WM, (d) 800-WM