TiAl基合金与GH3039合金摩擦-扩散双重焊焊合区过渡相的形成、结构与原位开裂

杜随更, 王松林, 胡弘毅

Formation, Structure, and In Situ Cracking of Intermediate Phases in the Friction-Diffusion Double Welding Zone Between TiAl-Based Alloy and GH3039 Alloy

DU Suigeng, WANG Songlin, HU Hongyi

图1 TiAl基合金与GH3039合金双重焊接不同阶段焊合区微观组织

Fig.1 Microstructures of the weld zone in different stages of the double welding of TiAl-based alloy and GH3039 alloy (SS—solid solution) (a) friction time 3 s (b) friction time 5 s (c) friction time 8 s (d) friction time 10 s (e) friction time 12 s + upset (friction welding) (f) friction welding + post weld heat treatment (g) friction welding + post weld heat treatment + diffusion welding (full process of the double welding)