In this study, the creep strength of welded joints of Grade 91 Type 1 and Type 2 steels was evaluated. It was determined that impurity elements in the Type 1 steel reduced its creep strength. This reduction was attributed to an increase in the amount of residual carbides in the fine-grain heat-affected zone during welding.

carbon steel, chromium-molybdenum steel, creep strength, heat-affected zone, microstructure, residual carbides, welded joints, welded joints, welding
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2024
ASM International
Topics
Microstructure Heat-affected zone Carbon steel Chromium steel Welding Creep strength