|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Computational Thermodynamics and Kinetics
||B-16: Kinetics of the α/γ Interface Migration in Fe-Mn and Fe-Ni Alloys
||Jianing Zhu, Hao Chen, Chi Zhang, Zhigang Yang, Haiwen Luo
|On-Site Speaker (Planned)
The austenite (γ)→ferrite(α) and ferrite(α)→austenite (γ) transformation in Fe-based alloys have received particular concern in the past decades due to their both theoretical and practical importance. In this work, kinetics of the α→γ and γ→α transformation in a series of Fe-xMn and Fe-xNi (x=1w.t.% to 12w.t.%) has been experimentally investigated. A so-called GEB model, in which chemical driving force at the migrating interfaces is assumed to be balanced by Gibbs energy dissipation due to alloying elements diffusion inside the interface and interface friction, has been applied to modeling the kinetics of the α→γ and γ→α transformation. A kinetic transition from partitioning to partitionless mode is predicted to occur during the α→γ and γ→α transformation, which is in good agreement with experimental results. Value of the intrinsic α/γ interface mobility is also derived from experiments.
||Planned: Supplemental Proceedings volume