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Unified treatment of Kirkendall shift and migration of phase interfaces
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Physical Metallurgy.ORCID iD: 0000-0001-8797-4585
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
2006 (English)In: Acta Materialia, ISSN 1359-6454, E-ISSN 1873-2453, Vol. 54, no 4, 945-951 p.Article in journal (Refereed) Published
Abstract [en]

A recent treatment of diffusion in a lattice-fixed frame of reference, which can predict the Kirkendall shift, is modified to be applicable also to the migration of phase interfaces. The net flux across a reference point in the lattice, yielding the Kirkendall shift, as well as the net flux across a phase interface, yielding its migration, are obtained from the same flux equation. Numerical calculations are presented and demonstrate that the method gives expected results. The strength of the method is that it is not based on the assumption of local equilibrium and it is capable of automatically yielding close to local equilibrium conditions except at high supersaturations. There it describes an increasing deviation from local equilibrium as the initial alloy composition is moved inside the one-phase field for the new phase. The interaction of a migrating phase interface and Kirkendall markers is also illustrated.

Place, publisher, year, edition, pages
2006. Vol. 54, no 4, 945-951 p.
Keyword [en]
phase transformation, diffusion, flux equation, Kirkendall shift, mobility, massive transformation, diffusion
Identifiers
URN: urn:nbn:se:kth:diva-15430DOI: 10.1016/j.actamat.2005.10.022ISI: 000235421300009Scopus ID: 2-s2.0-31044437391OAI: oai:DiVA.org:kth-15430DiVA: diva2:333471
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Larsson, Henrik

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