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Diffusion Under Temperature Gradient: A Phase-field Model Study

Published

Author(s)

Rashmi R. Mohanty, Jonathan E. Guyer, Yong Ho Sohn

Abstract

A diffuse interface model was devised and employed to investigate the effect of thermotransport (a.k.a., thermomigration) process in single-phase and multi-phase alloys of a binary system. Simulation results show that an applied temperature gradient can cause significant redistribution of constituent elements and phases in the alloy. The magnitude and the direction of the redistribution depend on the initial composition, the atomic mobility and the heat of transport of the respective elements. In multi-phase alloys, the thermomigration effect can cause the formation of single-element rich phases at the cold and hot ends of the alloy (i.e., demixing).
Citation
Journal of Applied Physics
Volume
106

Keywords

Thermomigration, Soret, Phase field, FiPy

Citation

Mohanty, R. , Guyer, J. and Sohn, Y. (2009), Diffusion Under Temperature Gradient: A Phase-field Model Study, Journal of Applied Physics (Accessed June 19, 2024)

Issues

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Created August 10, 2009, Updated October 12, 2021