Microstructure and Fatigue Crack Growth Behavior of Heat Affected Zone in P92 Steel Weldment
Fatigue strength and life of weldment at high temperature is very important for high temperature materials used in power plants. In this study, fatigue crack growth tests were performed at high temperature to examine the effect of microstructure on the crack growth resistance in P92 steel weldment. Microhardness of the weldment was also investigated for better analysis. CT specimens were made from a welded plate with notches at different distances from the fusion line. High fatigue crack growth rates were found along the fusion line and fusion line+2mm line into the heat affected zone.
Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka
B. J. Kim and B. S. Lim, "Microstructure and Fatigue Crack Growth Behavior of Heat Affected Zone in P92 Steel Weldment", Key Engineering Materials, Vols. 261-263, pp. 1185-1190, 2004