Abstract
<jats:p>Deformation-induced martensite phase (α&apos;) undergoes reverse transformation recrystallization to austenite phase (γ) of α&apos;→γ in the cold-rolled TRIP-aided 19Cr economical duplex stainless steel (EDSS) plate during tempering recrystallization process at 950 °C, which takes precedence over the recrystallization of dislocation-type ferrite (α) and retained dislocation dominated austenite (γ). The difference in sequential order of recrystallization among multiple phases (induced α&apos; phase, dislocation dominated α and retained γ phase to recrystallized α and γ phase) and grain growth rates of recrystallized α and γ phase result in the heterogeneous grains size distribution characteristic in the material during tempering recrystallization process. Recrystallized ferrite undergoes plastic deformation preferentially over the recrystallized austenitein the recrystallized 19Cr EDSS during tensile deformation at room temperature. Nevertheless, the equivalent strain of the recrystallized austenite is larger than that of the ferrite phase during tensile deformation process. Initial cracks preferentially form in the austenite phase and then propagate to phase interface as strain incompatibility effect of recrystallized α/γ phase leading to the final cracking.</jats:p>