|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Computational Thermodynamics and Kinetics
||Manganese Influence on Equilibrium Partition Coefficient and Phase Transformation in Peritectic Steel
||Huabiao Chen, Mujun Long, Wenjie He, Dengfu Chen, Huamei Duan, Yunwei Huang
|On-Site Speaker (Planned)
The equilibrium partition coefficient (k) which affected by chemical component, phase consumption constitution and temperature is a key parameter related to solutes distribution during steel solidification. In this study, the effect of Mn on the equilibrium partition coefficients and phase transformation were quantitatively analysed. A technique according the relative amount of δ-Fe and γ-Fe to determine the equilibrium partition coefficients of solutes in L, δ-Fe, and γ-Fe three-phase coexistence zone was proposed. Results showed that Mn promotes the generation of γ-Fe and its effect on peretectic reation zone is significant. The equilibrium partition coefficients were determined based on the phase change and the relative amount of δ-Fe and γ-Fe according to the solidification paths which undergo difference phase coexistence zone. All of k_C^δ, k_Si^δ, k_Si^(δ+γ), k_P^δ, k_P^(δ+γ), k_S^δ, and k_S^(δ+γ) decrease with Mn increasing, while k_C^(δ+γ) increases due to solute Mn promote the generation of γ-Fe from peritectic reaction.
||Planned: Supplemental Proceedings volume