Phase-field simulation of structure evolution at high growth velocities during directional solidification of Ti55Al45 alloy

Guo, Jingjie; Li, Xinzhong; Su, Yanqing; Wu, Shoujun; Li, Bangsheng; Fu, Hengzhi

doi:10.1016/j.intermet.2004.07.018

Cited by 16 publications

(7 citation statements)

References 13 publications

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“…Guo et al [11] have used a KKS model [12] to simulate directional solidification of a Ti 55 Al 45 alloy with the free energy derived from Calphad thermodynamic modeling. Wen et al [13] introduced a three-dimensional phase-field model for the a 0 2 ?…”

Section: Introductionmentioning

confidence: 99%

Phase-field simulations of α→γ precipitations and transition to massive transformation in the Ti–Al alloy

Singer

Jacot

2009

Acta Materialia

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A phase-field model for the solid-solid a ? c transition of Ti-Al binary alloys is presented based on analytical Gibbs free energies and couplings to the thermodynamical database ThermoCalc. The equilibrium values recover the a + c phase boundaries. Morphological transitions from diffusive to massive (partitionless) growth are observed on increasing the initial mole fraction of aluminum. Temporal evolution of the interface shows a ffi ffi t p behavior for diffusive and a linear behavior for massive growth, which is in accordance with theoretical predictions. An estimate of the interfacial mobility of Ti-Al based on the Burke-Turnbull equation is calculated. The expression of the mobility follows an Arrhenius law. Using the derived interfacial mobility, the calculated interfacial velocities of the massive transformation are in quantitative agreement with those observed in experiments.

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Section: Introductionmentioning

confidence: 99%

Phase-field simulations of α→γ precipitations and transition to massive transformation in the Ti–Al alloy

Singer

Jacot

2009

Acta Materialia

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“…The PF model has been widely used to simulate the microstructure evolution both in liquid and solid [4,[14][15][16][17][18][19][20]. In the formulation of the PF model, a transition system of microstructure state variable is described by a partial differential equation using a single phase field variable (x, t), which is defined as a continuous function in space and time.…”

Section: Phase Field Modelmentioning

confidence: 99%

Progress in mesoscopic modeling of microstructure evolution in steels

Xiao

Chen

et al. 2011

Sci. China Technol. Sci.

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The mesoscopic modeling developed rapidly in the past three decades is a promising tool for predicting and understanding the microstructure evolution at grain scale. In this paper, the recent development of mesoscopic modeling and its application to microstructure evolution in steels is reviewed. Firstly, some representative computational models are briefly introduced, e.g., the phase field model, the cellular automaton model and the Monte Carlo model. Then, the emphasis is put on the application of mesoscopic modeling of the complex features of microstructure evolution, including solidification, solid-state phase transformation, recrystallization and grain growth. Finally, some issues in the present mesoscopic modeling and its perspective are discussed. microstructure evolution, steel, phase field, cellular automaton, Monte Carlo Citation:Xiao N M, Chen Y, Li D Z, et al. Progress in mesoscopic modeling of microstructure evolution in steels.

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“…[12][13][14][15] For example, Park et al investigated the evolution of the Cu 3 Sn and Cu 6 Sn 5 intermetallic phases under electro-migration conditions, using a multiphase-field model. [16] Villanueva et al studied the growth of the intermetallic phase by incorporating fluid flow, phase change, and solute diffusion in the phase-field model.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Investigations on the Growth of the Intermetallic Mg₂Si Phase in Mg Infiltrated Si‐Foams

et al. 2017

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The present work explores the growing behavior of the intermetallic layer in the Mg-Si system. Following achievements have been obtained in our investigation: (i) A complete wetting concept is proposed for the lateral spreading of the intermetallic layer. (ii) In contrast to the stoichiometric property for the intermetallic phase in the phase diagram, the authors show that concentration gradients are able to be established in the kinetic process. (iii) Contrary to the reported growth behavior, d / t 0.25-0.5 in other intermetallics, the authors find a transition from d / ffiffi t p to d / t with an increase of the temperature, where d is the thickness of the intermetallic layer and t is the time.

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Phase-field simulation of structure evolution at high growth velocities during directional solidification of Ti55Al45 alloy

Cited by 16 publications

References 13 publications

Phase-field simulations of α→γ precipitations and transition to massive transformation in the Ti–Al alloy

Phase-field simulations of α→γ precipitations and transition to massive transformation in the Ti–Al alloy

Progress in mesoscopic modeling of microstructure evolution in steels

Numerical and Experimental Investigations on the Growth of the Intermetallic Mg₂Si Phase in Mg Infiltrated Si‐Foams

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Phase-field simulation of structure evolution at high growth velocities during directional solidification of Ti55Al45 alloy

Cited by 16 publications

References 13 publications

Phase-field simulations of α→γ precipitations and transition to massive transformation in the Ti–Al alloy

Phase-field simulations of α→γ precipitations and transition to massive transformation in the Ti–Al alloy

Progress in mesoscopic modeling of microstructure evolution in steels

Numerical and Experimental Investigations on the Growth of the Intermetallic Mg2Si Phase in Mg Infiltrated Si‐Foams

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Numerical and Experimental Investigations on the Growth of the Intermetallic Mg₂Si Phase in Mg Infiltrated Si‐Foams