Rupture behavior and fracture mode for Inconel 625–9% Cr steel dissimilar welded joints at high temperature

P92 steel and inconel 617 alloy welds joint produced using ERNiCr-3 filler with GTAW process: Solidification mechanism, microstructure, mechanical properties and residual stresses

“…failure from ICHAZ was diffusion controlled which led to the localized strain at the small grain boundaries and weakening of the grain boundaries. Wu et al [ 30 ] reported that the evolution of Laves phase and coarsening of the M 23 C 6 phases during creep exposure contributed to the softening of the matrix and facilitated the crack initiation that caused the failure of the DWJ of Inconel 625–9% Cr steel from the HAZ of steel. The residual stress measurement across the welded joint of P92/IN625 alloy using the deep hole drilling (DHD) and newton diffraction (ND) methods.…”