Journal ArticleDOI
Phase-field simulation of the columnar-to-equiaxed transition in alloy solidification
TLDR
In this paper, the columnar-to-equiaxed transition (CET) in directional solidification of alloys is simulated using the phase-field method, which relies on the solution of a solute conservation equation and an equation for the propagation of the phase field on the scale of developing microstructure.About:
This article is published in Acta Materialia.The article was published on 2006-05-01. It has received 143 citations till now. The article focuses on the topics: Directional solidification & Equiaxed crystals.read more
Citations
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Solidification microstructures and solid-state parallels: Recent developments, future directions
Mark Asta,Christoph Beckermann,Alain Karma,Wilfried Kurz,Ralph E. Napolitano,Mathis Plapp,Gary R. Purdy,Michel Rappaz,Rohit Trivedi +8 more
TL;DR: In this paper, the authors review the most important findings in this technologically important area that impact Our quantitative understanding of: (i) key anisotropic properties of the solid liquid interface that govern solidification pattern evolution, including the solid-liquid interface free energy and the kinetic coefficient; (ii) dendritic solidification at small and large growth rates.
Journal ArticleDOI
Prediction of microstructure in laser powder bed fusion process
TL;DR: In this article, computational fluid dynamics analysis is used to predict melt pool characteristics and phase field modeling is employed to simulate microstructure evolution in the as-deposited state for laser powder bed fusion (LPBF) process.
Journal ArticleDOI
Modulating laser intensity profile ellipticity for microstructural control during metal additive manufacturing
Tien T. Roehling,Tien T. Roehling,Sheldon Wu,Saad A. Khairallah,John D. Roehling,S. Stefan Soezeri,Michael F. Crumb,Manyalibo J. Matthews +7 more
TL;DR: In this paper, the effects of laser intensity profile ellipticity on melt track macrostructures and microstructures were studied in 316L stainless steel, and the results were supported by temperature gradients and melt velocities simulated using the ALE3D multi-physics code.
Journal ArticleDOI
Quantitative phase-field modeling for dilute alloy solidification involving diffusion in the solid
Munekazu Ohno,Kiyotaka Matsuura +1 more
TL;DR: An antitrapping current scheme for quantitative phase-field model is extended to solidification process in a dilute binary alloy system involving diffusion in the solid, demonstrating an excellent performance of the present model.
Journal ArticleDOI
A phase-field model with antitrapping current for multicomponent alloys with arbitrary thermodynamic properties
TL;DR: In this article, the authors extended the antitrapping PFM to multicomponent systems with arbitrary thermodynamic properties and derived the relationship between the phase-field mobility and the real interface mobility at the thin interface limit.
References
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Book
Fundamentals of Solidification
W. Kurz,D. J. Fisher +1 more
TL;DR: In this article, Atom Transfer at the Solid/Liquid Interface Morphological Instability of a Solid/ Liquid Interface Solidification Microstructure: Cells and Dendrites SolidificationMicrostructure, Eutectic and Peritectic Solute Redistribution Rapid Solidization Microstructures Summary Appendices Symbols Index
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Stability of a Planar Interface During Solidification of a Dilute Binary Alloy
W. W. Mullins,R. F. Sekerka +1 more
TL;DR: In this article, the stability of a moving planar liquid-solid interface during unidirectional freezing of a dilute binary alloy is theoretically investigated by calculating the time dependence of the amplitude of a sinusoidal perturbation of infinitesimal amplitude introduced into the planar shape.
Journal ArticleDOI
Phase-Field Simulation of Solidification
TL;DR: An overview of the phase-field method for modeling solidification is presented, together with several example results as mentioned in this paper, which has been applied to a wide variety of problems including dendritic, eutectic, and peritectic growth in alloys; and solute trapping during rapid solidification.
Journal ArticleDOI
Quantitative phase-field modeling of dendritic growth in two and three dimensions
Alain Karma,Wouter-Jan Rappel +1 more
TL;DR: In this article, the results of quantitative phase-field simulations of the dendritic crystallization of a pure melt in two and three dimensions were reported, and they were used to test the accuracy of phase field computations performed within the thin interface limit of the phase field model.
Journal ArticleDOI
Steady state columnar and equiaxed growth of dendrites and eutectic
TL;DR: In this article, an analysis for the growth of equiaxed grains ahead of the columnar front during directional solidification is presented, and the model considers both single-phase and eutectic growth.