Simulation of phase field method for solidification microstructure of Fe-C alloy by lateral constraint

Journal of Lanzhou University of Technology ›› 2020, Vol. 46 ›› Issue (5): 13-20.

• Materials Science and Engineering • Previous Articles Next Articles

Simulation of phase field method for solidification microstructure of Fe-C alloy by lateral constraint

FENG Li^1,2, WANG Jun¹, ZHU Chang-sheng¹, ZHONG Jun-he¹, AN Guo-sheng¹

1. College of Materials Science and Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China;
2. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou Univ. of Tech., Lanzhou 730050, China

Received:2019-09-01 Online:2020-10-28 Published:2020-11-06

Abstract

Abstract: Taking Fe-C binary alloy as an example, the evolution process of dendrite and eutectoid microstructure under transverse restraint was simulated in this study by adopting the multiphase field method. The influence of length and thickness of transverse restraint on growth morphology of dendrite and that of eutectoid microstructure was discussed in terms of simulated microstructures. All results coming from our simulation indicate:The normal growth of dendrite and eutectoid is limited by the existence of transverse constraint, and the morphology of microstructure above the transverse constraint changes obviously; With the increase of the length of transverse constraint, the dendrite spacing above the transverse constraint decreases obviously, and the layer spacing of the eutectoid structure becomes larger as a result;With the increase of transverse constraint thickness, the growth rate of new dendrites above transverse constraints decreases, and the deflection of Fe₃C phase in eutectoid structure increases, resulting in larger interlayer spacing.

Key words: phase field simulation, Fe-C alloy, lateral constraint, dendritic morphology, eutectoid structure

CLC Number:

TG244
TG248

FENG Li, WANG Jun, ZHU Chang-sheng, ZHONG Jun-he, AN Guo-sheng. Simulation of phase field method for solidification microstructure of Fe-C alloy by lateral constraint[J]. Journal of Lanzhou University of Technology, 2020, 46(5): 13-20.

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Simulation of phase field method for solidification microstructure of Fe-C alloy by lateral constraint

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