|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Advanced Real Time Imaging
||Microstructure evolution of TRIP-assisted lean duplex stainless steel UNS S32101 during in-situ tensile
||Jingyuan Li, Xinghai Zhang, Wangzhong Mu
|On-Site Speaker (Planned)
In-situ EBSD technique is a new technique developed in recent years. It can be used to stretch small specimens in scanning electron microscopy and then photograph EBSD, so that the evolution of microstructure during deformation can be analyzed in situ. In our study, the microstructure transformation and plastic deformation behavior of lean duplex stainless steel UNS S32101 during tensile are investigated by in-situ EBSD technique. The results indicate that strain-induced martensite transformation occurs in the metastable austenite during the deformation, following two typical sequences of γ → α′ and γ→ ε → α′. Furthermore, the nucleation site and strain-induced transformation process of martensite can be observed by in-situ EBSD technique. The α′-martensite nucleates preferentially at the large angle grain boundaries between austenite grains as well as the intersection of annealing twin boundaries and grain boundaries, growing rapidly along annealing TBs, GBs and slip bands.
||表征, 铁和钢, 相变