|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Phase Transformations in Multi-component Systems: An MPMD Symposium Honoring Gary R. Purdy
||Reversion of Austenite from Martensitic Fe-2Mn-1.5Si-0.3C Alloy during Continuous Heating Process
||Xianguang Zhang, Goro Miyamoto, Tadashi Furuhara
|On-Site Speaker (Planned)
The reversely transformed austenite (γ) structure has a drastic effect on the final transformed structure. Moreover, the alloy partitioning behaviors during the reversion have great effects on the kinetics of subsequent γ decomposition. Two morphologies of γ (acicular and globular) were observed during the austenitization of lath martensite. However, the details for these two kinds of γ formation have not been well understood yet, especially, in term of the alloy partitioning. In this study, the microstructure evolution and partitioning behavior of alloying elements during the reversion were examined both experimentally and theoretically. It was found that the growth of acicular γ is controlled by the diffusion of Mn and Si. The partitioning behavior of Mn and Si is strongly depended on the morphology of γ. Furthermore, the segregation of Mn and Si developed during the reversion can be inherited by the fully transformed γ structures.
||Planned: A print-only volume