Evaluation of creep properties of steel P92 and its welded joint

摘要

This work is focused on testing and evaluation of creep properties of P92 base material (BM) and welded joints (WJ)as well. Up to date results of creep rupture test of P92 base metal and welds are presented in this article. Creeprupture strength (CRS) of WJ initially reaches values close to the BM, with longer times to fracture and especially athigher temperatures, creep strength of WJ decreases and the data is closer to the lower 40 % tolerance band.