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    Improved Corrosion Resistance on Selective Laser Melting Produced Ti-5Cu Alloy after Heat Treatment

    Access Status
    Fulltext not available
    Authors
    Qin, P.
    Liu, Y.
    Sercombe, T.
    Li, Y.
    Zhang, C.
    Cao, C.
    Sun, Hongqi
    Zhang, L.
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Qin, P. and Liu, Y. and Sercombe, T. and Li, Y. and Zhang, C. and Cao, C. and Sun, H. et al. 2018. Improved Corrosion Resistance on Selective Laser Melting Produced Ti-5Cu Alloy after Heat Treatment. ACS Biomaterials Science and Engineering. 4 (7): pp. 2633-2642.
    Source Title
    ACS Biomaterials Science and Engineering
    DOI
    10.1021/acsbiomaterials.8b00319
    ISSN
    2373-9878
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/71006
    Collection
    • Curtin Research Publications
    Abstract

    A Ti-5Cu alloy produced by selective laser melting exhibits a nonuniform Ti2Cu phase structure, which contains a small amount of a' phase in melt pool boundaries thereby resulting in reduced corrosion resistance. The heat-treatment process proposed in this work eliminates the deleterious effect of a' phase and the Ti2Cu phase is refined using different cooling rates, which improves the corrosion resistance. The electrochemical results indicate that the heat-treated Ti-5Cu samples have similar corrosion behavior to pure CP-Ti. A slower cooling rate produces a larger spacing between the Ti2Cu phases in the microstructure of the sample, resulting in higher corrosion resistance. The corrosion behavior of SLM-produced Ti-5Cu and heat-treated counterparts with different microstructure are detailed discussed.

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