Phase-field simulation of peritectic steels solidification with transformation-induced elastic effect

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

doi:10.1016/j.jmrt.2020.02.007

Cited by 11 publications

(3 citation statements)

References 20 publications

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“…These strains can affect the microstructure of the precipitates, such as by altering their grain size, shape, and orientation. The lattice mismatch can be controlled by adjusting the alloy composition and heat treatment conditions, enabling the control of the microstructure of the precipitates [ 6 , 7 ]. In conclusion, dislocations are common crystal defects in metals, and dislocation-induced precipitation plays a significant role in the microstructure and mechanical properties of metal alloys.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Lattice Misfits on the Precipitation at Dislocations: Phase-Field Crystal Simulation

Mao,

Zeng,

Zhang

et al. 2023

Materials

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An atomic-scale approach was employed to simulate the formation of precipitates with different lattice misfits in the early stages of the aging of supersaturated aluminum alloys. The simulation results revealed that the increase in lattice misfits could significantly promote the nucleation rate of precipitates, which results in a larger number and smaller size of the precipitates. The morphologies of the precipitates also vary with the degree of a lattice misfit. Moreover, the higher the lattice misfit, the earlier the nucleation of the second phase occurs, which can substantially inhibit the movement of dislocations. The research on the lattice misfit of precipitation can provide theoretical guidance for the design of high-strength aluminum alloys.

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Section: Introductionmentioning

confidence: 99%

The Effect of Lattice Misfits on the Precipitation at Dislocations: Phase-Field Crystal Simulation

Mao,

Zeng,

Zhang

et al. 2023

Materials

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“…In recent years, the phase-field (PF) approach has proved to be a powerful computational method for modeling and tracking microstructural and morphological evolution in materials at the mesoscale [ 5 , 6 , 7 ]. Materials scientists commonly aim to enhance material properties by an in-depth understanding of the predominant mechanisms driving microstructural transformations.…”

Section: Introductionmentioning

confidence: 99%

Interplay of Fracture and Martensite Transformation in Microstructures: A Coupled Problem

2022

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We are witnessing a tremendous transition towards a society powered by net-zero carbon emission energy, with a corresponding escalating reliance on functional materials (FM). In recent years, the application of FM in multiphysics environments has brought new challenges to the mechanics and materials research communities. The underlying mechanism in FM, which governs several fundamental characteristics, is known as martensitic phase transformation (MPT). When it comes to the application of FM in the multiphysics context, a thorough understanding of the interplay between MPT and fracture plays a crucial role in FM design and application. In the present work, a coupled problem of crack nucleation and propagation and multivariant stress-induced MPT in elastic materials is presented using a finite element method based on Khachaturyan’s microelasticity theory. The problem is established based on a phase-field (PF) approach, which includes the Ginzburg–Landau equations with advanced thermodynamic potential and the variational formulation of Griffith’s theory. Therefore, the model consists of a coupled system of the Ginzburg–Landau equations and the static elasticity equation, and it characterizes evolution of distributions of austenite and two martensitic variants as well as crack growth in terms of corresponding order parameters. The numerical results show that crack growth does not begin until MPT has grown almost completely through the microstructure. Subsequent to the initial formation of the martensite variants, the initial crack propagates in such a way that its path mainly depends on the feature of martensite variant formations, the orientation and direction upon which the martensite plates are aligned, and the stress concentration between martensite plates. In addition, crack propagation behavior and martensite variant evaluations for different lattice orientation angles are presented and discussed in-detail.

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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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Phase-field simulation of peritectic steels solidification with transformation-induced elastic effect

Cited by 11 publications

References 20 publications

The Effect of Lattice Misfits on the Precipitation at Dislocations: Phase-Field Crystal Simulation

The Effect of Lattice Misfits on the Precipitation at Dislocations: Phase-Field Crystal Simulation

Interplay of Fracture and Martensite Transformation in Microstructures: A Coupled Problem

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

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