Quantitative isothermal phase-field simulations of peritectic phase transformation in FeMn system

Alves, Celso Luiz Moraes; Rezende, João Luiz Lopes; Senk, Dieter; Kundin, Julia

doi:10.1016/j.jmrt.2015.11.007

Cited by 8 publications

(2 citation statements)

References 25 publications

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“…The formation mechanism of microstructure and micro-segregation was analyzed, and the reason for the production of microscopic liquid channels and melting pools was explained by solute diffusion. Alves et al [38][39][40] quantitatively investigated on the peritectic phase transformation during the isothermal solidification of Fe-Mn alloys using the phase field simulations. Feng et al [41] investigated the relation between the rate of peritectic reaction and the curvature of the nucleation site of c phase based on multi-phase field model.…”

Section: Introductionmentioning

confidence: 99%

Multiphase Field Modeling of Dendritic Solidification of Low-Carbon Steel with Peritectic Phase Transition

Yang

Luo

Wang

et al. 2021

Metall Mater Trans B

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In the present study, an improved multiphase field model with taking into consideration the S/L interface anisotropy is proposed to simulate the dendritic growth with peritectic transition of low-carbon steel, and a new random heterogeneous nucleation method is proposed to treat the c phase nucleation during the peritectic solidification process. The c phase growth around the dendrite (the single dendrite and polycrystalline ferrite) and the subsequent peritectic transformation during the peritectic solidification are simulated. The results show that when the temperature reaches the c phase nucleation temperature, c nuclei suddenly nucleate at the d/ L interface, and laterally grow with the movement of L/c/d triple point around the d/L interface of d dendrite. After the d dendrite is fully wrapped by the continuous intervening c phase, the c phase continues to grow with direct phase transformation from both d phase and liquid phase. With the increase of melt undercooling, more d phase and liquid phase are consumed to form c phase, and the intervening c phase between the d dendrite and liquid phase becomes more and more thick, but the d dendrite arm becomes more and more thin. During the dendritic solidification process, the solute would be rejected from dendrite trunk with the dendritic growth and enriched at the dendrite boundary, especially at the dendrite root. The solute enrichment at the dendrite root would inhibit the c phase growth at the dendrite root and thus the thickness of intervening c phase at the dendrite root is thinnest around the dendrite. Moreover, the solute concentration in c phase is among the d phase and liquid phase, because the carbon solubility in c phase is higher than that in d phase, but lower than that in liquid phase.

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Section: Introductionmentioning

confidence: 99%

Multiphase Field Modeling of Dendritic Solidification of Low-Carbon Steel with Peritectic Phase Transition

Yang

Luo

Wang

et al. 2021

Metall Mater Trans B

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“…e.g. Steinbach [2], Souhar et al [3], Alves et al [4] and Takaki et al [5]. The large mechanical deformation description requires finite kinematics, where the overall deformation gradient is decomposed multiplicatively into several intermediate stress-free configurations.…”

Section: Introductionmentioning

confidence: 99%

Micro‐macro modelling of steel solidification: A continuum mechanical, bi‐phasic, two‐scale model including thermal driven phase transition

et al. 2017

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This paper addresses a continuum-mechanical, bi-phasic, two-scale numerical model for casting and processing of metallic alloys. The solid and liquid physical states, which represents the solid and molten alloy, are formulated in the framework of the theory of porous media (TPM) including thermal coupling, finite plasticity superimposed by a secondary power creep law and visco-elasticity associated by Darcy's permeability for the solid and the liquid phase, respectively. In view of phase transition during solidification, a two-scale approach considering the phase-field on the micro-scale is proposed, where a double-well potential with two local minima for completely solid and liquid physical states is utilized. The finite element method based on the standard Gallerkin element formulation and the finite difference method was employed for the macro-scale and the micro-scale, respectively. Finally, the performance of the discussed model is demonstrated by the recalculation and validation of a solidification experiment.

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Review of Peritectic Solidification Mechanisms and Effects in Steel Casting

Azizi

Thomas

Zaeem

2020

Metall Mater Trans B

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Quantitative isothermal phase-field simulations of peritectic phase transformation in FeMn system

Cited by 8 publications

References 25 publications

Multiphase Field Modeling of Dendritic Solidification of Low-Carbon Steel with Peritectic Phase Transition

Multiphase Field Modeling of Dendritic Solidification of Low-Carbon Steel with Peritectic Phase Transition

Micro‐macro modelling of steel solidification: A continuum mechanical, bi‐phasic, two‐scale model including thermal driven phase transition

Review of Peritectic Solidification Mechanisms and Effects in Steel Casting

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