Grain boundary segregation: equilibrium and non-equilibrium conditions

    Authors

    B. W. Kempshall; B. I. Prenitzer;L. A. Giannuzzi

    Comments

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    Abbreviated Journal Title

    Scr. Mater.

    Keywords

    grain boundary; segregation; kinetics; copper; bismuth; CU(BI) ALLOYS; BI; COPPER; CU; BISMUTH; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering

    Abstract

    The segregation of Bi to Cu grain boundaries can be characterized as either equilibrium or non-equilibrium segregation. The experimental conditions of the segregation process determine the type of segregation behavior that is achieved. Classical McLean equilibrium segregation can be achieved through Bi grain boundary segregation from a constant vapor source with long anneal times. The Chang dislocation-pipe diffusion model of Bi segregation more accurately describes the onset of Bi segregation from an instantaneous source for short anneal times. A discussion on the conditions defining Bi segregation behavior is presented. (C) 2002 Acta Materialia, Inc. Published by Elsevier Science Ltd. All rights reserved.

    Journal Title

    Scripta Materialia

    Volume

    47

    Issue/Number

    7

    Publication Date

    1-1-2002

    Document Type

    Article

    Language

    English

    First Page

    447

    Last Page

    451

    WOS Identifier

    WOS:000178447000003

    ISSN

    1359-6462

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