中国物理B ›› 2021, Vol. 30 ›› Issue (1): 18201-.doi: 10.1088/1674-1056/abc54b

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  • 收稿日期:2020-09-14 修回日期:2020-10-16 接受日期:2020-10-28 出版日期:2020-12-17 发布日期:2020-12-30

Multi-phase-field simulation of austenite peritectic solidification based on a ferrite grain

Chao Yang(杨超)1,2, Jing Wang(王静)1,2, Junsheng Wang(王俊升)1,2, Yu Liu(刘瑜)3, Guomin Han(韩国民)4, Haifeng Song(宋海峰)3,4, and Houbing Huang(黄厚兵)1,2,†   

  1. 1 School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; 2 Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing 100081, China; 3 Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China; 4 Software Center for High Performance Numerical Simulation, China Academy of Engineering Physics, Beijing 100088, China
  • Received:2020-09-14 Revised:2020-10-16 Accepted:2020-10-28 Online:2020-12-17 Published:2020-12-30
  • Contact: †Corresponding author. E-mail: hbhuang@bit.edu.cn
  • Supported by:
    Project supported by the Science Challenge Project, China (Grant No. TZZT2019-D1-03), the National Natural Science Foundation of China (Grant No. 51972028), and the National Key Research and Development Program of China (Grant No. 2019YFA0307900).

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Abstract: A multi-phase-field model is implemented to investigate the peritectic solidification of Fe-C alloy. The nucleation mode of austenite is based on the local driving force, and two different thicknesses of the primary austenite on the surface of the ferrite equiaxed crystal grain are used as the initial conditions. The simulation shows the multiple interactions of ferrite, austenite, and liquid phases, and the effects of carbon diffusion, which presents the non-equilibrium dynamic process during Fe-C peritectic solidification at the mesoscopic scale. This work not only reveals the influence of the austenite nucleation position, but also clarifies the formation mechanism of liquid phase channels and molten pools. Therefore, the present study contributes to the understanding of the micro-morphology and micro-segregation evolution mechanisms of Fe-C alloy during peritectic solidification.

Key words: multi-phase-field simulation, morphology evolution, peritectic solidification, carbon diffusion, Fe-C alloy

中图分类号:  (Computational modeling; simulation)

  • 82.20.Wt
81.10.Aj (Theory and models of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation) 81.30.Fb (Solidification) 81.05.Bx (Metals, semimetals, and alloys)