焊前预处理对钛合金厚板焊接残余应力的影响

周牧, 王倩, 王延绪, 翟梓融, 何伦华, 李昺, 马英杰, 雷家峰, 杨锐

Effect of Prewelding Pretreatment on Welding Residual Stress of Titanium Alloy Thick Plate

ZHOU Mu, WANG Qian, WANG Yanxu, ZHAI Zirong, HE Lunhua, LI Bing, MA Yingjie, LEI Jiafeng, YANG Rui

图5 未预热和预热钛合金焊接接头距熔合线不同距离处热影响区(HAZ)的SEM像

Fig.5 SEM images of HAZ at different distances from the fusion line of unpreheated (a-c) and preheated (d-h) titanium alloy welded joint (Insets show the corresponding high magnified images) (a) 0 mm (Near-FZ) (b) 2 mm (Mid-HAZ) (c) 4 mm (Near-BM) (d) 0 mm (Near-FZ) (e) 2 mm (Near-FZ) (f) 4 mm (Near-FZ) (g) 5 mm (Mid-HAZ) (h) 8 mm (Near-BM)