✦ LIBER ✦

A general method for calculating deviation from local equilibrium at phase interfaces

✍ Scribed by J. Odqvist; B. Sundman; J. Ågren

Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 105 KB
Volume: 51
Category: Article
ISSN: 1359-6454
DOI: 10.1016/s1359-6454(02)00507-4

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✦ Synopsis

A general method to calculate the deviation from local equilibrium at phase interfaces in multicomponent systems is suggested. The deviation is caused by solute drag and finite interfacial mobility. In the limit of low transformation rates the new method degenerates to the well-known local equilibrium condition. The phase interface is divided into three zones, each with a finite thickness. In each zone a variation in thermodynamic properties and diffusional mobilities is assumed.