Kinetics, mechanism and modeling of the microstructural evolution of a 15Cr-15Ni-
2.2Mo-0.3Ti modified austenitic stainless steel (alloy D9) during dynamic recrystallization (DRX)
have been investigated. The kinetics of DRX has been investigated employing a modified Johnson-
Mehl-Avrami-Kolmogorov (JMAK) model. The microstructural study shows that nucleation of new
grains during DRX takes place on the parent grain boundary by a bulging mechanism. No
significant texture component has been found to develop in the recrystallized matrix. A substantial
amount of twins have been observed in the recrystallized matrix. It is proposed that twins play an
important role during the nucleation and subsequent expansion of DRX in alloy D9, which in turn
moderates the texture in the recrystallized matrix. An artificial neural network model has also been
developed to predict the fraction of DRX and grain size, as a function of processing conditions. A
good correlation between experimental findings and predicted results has been obtained.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.