Phase-field modelling of solute trapping during rapid solidification of a Si-As alloy

Details Phase-field modelling of solute trapping during rapid solidification of a Si-As alloy Phase-field modelling of solute trapping during rapid solidification of a Si-As alloy

2006-03-07

arxiv.org/abs/cond-mat/0603170v2

Acta Materialia, 54(18) 4659-4664 (2006)

Physics

Condensed Matter

Materials Science

revised version published in Acta Mater

Scientific paper

10.1016/j.actamat.2006.05.045

The effect of nonequilibrium solute trapping by a growing solid under rapid solidification conditions is studied using a phase-field model. Considering a continuous steady-state concentration profile across the diffuse solid-liquid interface, a new definition of the nonequilibrium partition coefficient in the phase-field context is introduced. This definition leads, in particular for high growth velocities, to a better description of the available experimental data in comparison with other diffuse interface and sharp-interface predictions.

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