Numerical simulation and validation of the Peltier pulse marking of solid/liquid interfaces

Corre, S.; Duffar, T.; Bernard, M.; Espezel, M.

doi:10.1016/s0022-0248(97)00257-1

Cited by 26 publications

(10 citation statements)

References 15 publications

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“…This is of importance because the investigation on the interface curvature is made by applying electrical pulses to the sample at regular intervals. In this way, the Joule effect and the Peltier effect generate heat close to the interface which modify the solidification velocity and has an impact on the incorporated solute [35]. This disturbance can be revealed by subsequent cutting, polishing and etching of the sample: the shape of the interface at the moment of the pulse is materialized by a thin line revealed on the polished, etched surface.…”

Section: Semiconductor Alloy Crucible and Cartridge Assemblymentioning

confidence: 99%

Experimental study of the solid–liquid interface dynamics and chemical segregation in concentrated semiconductor alloy Bridgman growth

Duhanian

Duffar²,

Marı́n

et al. 2005

Journal of Crystal Growth

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Section: Semiconductor Alloy Crucible and Cartridge Assemblymentioning

confidence: 99%

Experimental study of the solid–liquid interface dynamics and chemical segregation in concentrated semiconductor alloy Bridgman growth

Duhanian

Duffar²,

Marı́n

et al. 2005

Journal of Crystal Growth

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“…Since the heat diffusion is highly correlated to the current direction as well as the physical property differences between the solid and liquid phase, solidification of two different pure substances (Sn and Bi) is simulated in this study, and parameter values for the simulations can be found in ref. [20]. As shown in fig.…”

Section: Phase-field Modeling and Simulationmentioning

confidence: 90%

Thermoelectric effects induced dendrite branching dynamics in pure substances: An insight from morphological theory

Cao

Gao

et al. 2020

Eur. Phys. J. E

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Insights on the mechanical behavior in materials highly depend upon sufficiently characterizing microstructure details at the relevant length scales. In this study, the side-branching dynamics of dendritic structures formation in pure substances is studied upon the phase-field simulations of crystallization with applied direct currents. The effect of heat diffusion (including thermoelectric effect and undercooling) on the dendritic development is investigated, and the characteristics of the primary arms and side-branches are identified by implementing the image recognition technique. Results indicate that increasing the latent heat release would firstly enhance the side-branching and then cause the side-branches re-melting with large heat extraction form the solid. The side-branching could be tailored by rationally controlling the applied electric filed as well the heat treatment, which could be a potential way to improve the mechanical properties in metallic materials via optimizing the microstructure.

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“…Because of the action of the pulsed current, the solute elements in the liquid phase will not only undergo diffusion, but also a strong convection [18], but a very thin solute diffusion layer will still exist at the solid-liquid interface, denoted by 𝛿 𝑐 , as in figure 2. Assuming that the solute element's diffusion coefficient is a fixed value and is not affected by temperature, and not considering the solute element diffusion in the solid phase, then according to the conservation of solute mass, when the solute diffusion layer reaches a steady state there are:…”

Section: Diffusion Kinetics Of Ti Elements In the Two-phase Region Wi...mentioning

confidence: 99%

Effect of Non-Uniform Concentration Field on TiN Growth in Two-Phase Region with Electropulsing

Liang,

Wei,

Xiao

et al. 2024

J. Phys.: Conf. Ser.

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Ti microalloyed steel has the advantages of high toughness and high strength, but it is easy to form TiN particles with large dimensions at high temperatures, which is harmful to the metal and seriously affects the quality of cast billets. In this paper, by analyzing the kinetic characteristics of Ti element diffusion in the two-phase region with electropulsing, the influence mechanism of pulsed current on the growth of TiN particles in the two-phase region is investigated. The results show that the pulsed current improves the flow rate of Ti and N elements in the molten steel, reduces the concentration of Ti in the liquidoid along the solid-liquid interface, and the more the current intensity, the more obvious the impact; in addition, with the increase of the flow rate, the diffusion flux of Ti elements is also gradually improved. Therefore, the pulsed current promotes the diffusion of Ti elements by improving the concentration field of Ti and other solute elements in the two-phase region, thus inhibiting the growth of TiN.

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Numerical simulation and validation of the Peltier pulse marking of solid/liquid interfaces

Cited by 26 publications

References 15 publications

Experimental study of the solid–liquid interface dynamics and chemical segregation in concentrated semiconductor alloy Bridgman growth

Experimental study of the solid–liquid interface dynamics and chemical segregation in concentrated semiconductor alloy Bridgman growth

Thermoelectric effects induced dendrite branching dynamics in pure substances: An insight from morphological theory

Effect of Non-Uniform Concentration Field on TiN Growth in Two-Phase Region with Electropulsing

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