|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Advanced High-Strength Steels
||Effect of Interfacial Mn Partitioning on Carbon Partitioning and Interface Migration during Quenching and Partitioning
||Zongbiao Dai, Jianguo He, Zhigang Yang, Chi Zhang, Hao Chen
|On-Site Speaker (Planned)
Fundamentals of carbon partitioning and austenite-martensite interface migration during the Quenching and Partitioning (Q&P) process is essential for tailoring the microstructure of Q&P steels. A physical model, in which the interfacial partitioning of substitutional alloying element is taken into account, has been proposed to investigate the effect of Mn on the kinetics of austenite-martensite interface migration and carbon partitioning during the Q&P process in Fe-C-Mn-Si alloys. It is predicted that interfacial partitioning of Mn plays a significant role in carbon partitioning and interface migration. Furthermore, the physical Q&P model has also been integrated with a 2D phase field model (PFM) to simulate the microstructure evolution during the Q&P process. The PFM simulations show carbon concentration in individual austenite and interface migration are strongly dependent on austenite and martensite morphologies. The effect of size distribution of martensite and austenite on the Q&P process has also been discussed.
||Planned: Supplemental Proceedings volume