The effect of solid solution temperature on the precipitation phase and properties of plasma arc welded joints of Inconel625 high temperature alloy

Abstract The effect of solid solution temperature on microstructure and mechanical properties plasma welded nickel-based high alloy Incone l625 was investigated by treatment (The range is 950 °C to 1150 the intergroup interval 50 °C). results show that after at °C, chain carbides are precipitated austenite grain boundary base material. With increasing, carbon chains dissolve gradually boundary. When higher than 1050 completely melt back into matrix. At weld, dendritic crystal Laves phase with increase temperature. 1100 weld matrix transform cellular crystals. increased grows further weld. comprehensive joint best.