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    Atom probe characterization of precipitation in an aged Cu-Ni-P alloy

    Access Status
    Fulltext not available
    Authors
    Arugan, Y.
    Saxey, David
    Marquis, E.
    Cerezo, A.
    Smith, G.
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Arugan, Y. and Saxey, D. and Marquis, E. and Cerezo, A. and Smith, G. 2011. Atom probe characterization of precipitation in an aged Cu-Ni-P alloy. Ultramicroscopy. 111 (6): pp. 725-729.
    Source Title
    Ultramicroscopy
    DOI
    10.1016/j.ultramic.2011.01.003
    ISSN
    0304-3991
    School
    American Institute of Physics
    URI
    http://hdl.handle.net/20.500.11937/22436
    Collection
    • Curtin Research Publications
    Abstract

    A temporal evolution of clusters associated with age hardening behavior in a Cu–Ni–P alloy during ageing at 250 °C for up to 100 ks after solution treatment has been carried out. A three-dimensional atom probe (3DAP) analysis has showed that Ni–P clusters are present in the as-quenched condition, and that the cluster density increases as the ageing time increases. The clusters have a wide range of Ni/P ratios when they are relatively small, whereas larger clusters exhibit a narrow distribution of the Ni/P ratio, approaching a ratio of approximately two. These results would indicate that the clusters with various Ni/P ratios form at the early stage of precipitation and the ratio approaches a value identical to that of the equilibrium phase at 250 °C as the clusters enlarge during ageing.

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