Al and Zn impurity diffusion in binary and ternary magnesium solid-solutions

Catherine Kammerer, Nagraj Kulkarni, Robert Warmack, Yongho Sohn

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    5 Scopus citations

    Abstract

    Aluminum and zinc are two of the most common alloying elements in magnesium alloys. The present work examines impurity diffusion coefficients of Al and Zn in Mg(Zn) and Mg(Al) binary solid solutions, respectively. Experimental investigation was carried out with diffusion couples of ternary polycrystalline alloys. Concentration profiles were measured by electron microprobe micro-analysis and the impurity diffusion coefficients were determined by the Hall Method. Consistent with the findings of other researchers, Zn impurities diffuse faster than Al impurities in pure Mg and the Zn impurity diffusion coefficient is only slightly affected by the concentration of Al in Mg(Al) solid solutions. Unique to this study is the investigation of the diffusion behavior of Al impurities in Mg(Zn) solid solutions. The activation energy of Al impurity diffusion is strongly influenced by the solute concentration in Mg(Zn) solid solutions.

    Original languageEnglish
    Title of host publicationMagnesium Technology 2014 - Held During TMS 2014 143rd Annual Meeting and Exhibition
    PublisherMinerals, Metals and Materials Society
    Pages407-411
    Number of pages5
    ISBN (Print)9781118888162
    DOIs
    StatePublished - 2014
    EventMagnesium Technology 2014 - TMS 2014 143rd Annual Meeting and Exhibition - San Diego, CA, United States
    Duration: Feb 16 2014Feb 20 2014

    Publication series

    NameMagnesium Technology
    ISSN (Print)1545-4150

    Conference

    ConferenceMagnesium Technology 2014 - TMS 2014 143rd Annual Meeting and Exhibition
    Country/TerritoryUnited States
    CitySan Diego, CA
    Period02/16/1402/20/14

    Keywords

    • Aluminum
    • Hall method
    • Impurity diffusion
    • Magnesium
    • Zinc

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