Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Determination of martensite structures of the Au7Cu5Al4 and Au7Cu5.7Al3.3 shape-memory alloys

    Access Status
    Fulltext not available
    Authors
    Elcombe, M.
    Kealley, Cat
    Bhatia, V.
    Thorogood, G.
    Carter, Damien
    Avdeev, M.
    Cortie, M.
    Date
    2014
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Elcombe, M. and Kealley, C. and Bhatia, V. and Thorogood, G. and Carter, D. and Avdeev, M. and Cortie, M. 2014. Determination of martensite structures of the Au7Cu5Al4 and Au7Cu5.7Al3.3 shape-memory alloys. Acta Materialia. 79: pp. 234-240.
    Source Title
    Acta Materialia
    DOI
    10.1016/j.actamat.2014.07.039
    ISSN
    1359-6454
    School
    Department of Imaging and Applied Physics
    URI
    http://hdl.handle.net/20.500.11937/2938
    Collection
    • Curtin Research Publications
    Abstract

    The β-phase of Au7Cu5Al4 undergoes a reversible shape-memory phase transformation for which several conflicting martensite phases have been reported. Here we show the significance of the cooling temperature used to obtain the martensite. If Au7Cu5Al4 is cooled from the parent phase condition to cryogenic temperatures, e.g. below 200 K, the martensitic phase is orthorhombic (space group Pcmn, a = 4.4841 Å, b = 5.8996 Å, c = 17.8130 Å); however, when this composition is cooled to only ~260 K it will in general consist of a mixture of orthorhombic and monoclinic phase (the latter has space group P21/m, a = 4.4742 Å, b = 5.9265 Å, c = 13.3370 Å, β = 91.425°). In contrast, a sample with decreased Al content (Au7Cu5.7Al3.3) transforms fully to monoclinic phase if cooled to ~260 K.

    Related items

    Showing items related by title, author, creator and subject.

    • Stability of retained austenite in high carbon steel under compressive stress: An investigation from macro to nano scale
      Hossain, R.; Pahlevani, F.; Quadir, Md Zakaria; Sahajwalla, V. (2016)
      Although high carbon martensitic steels are well known for their industrial utility in high abrasion and extreme operating environments, due to their hardness and strength, the compressive stability of their retained ...
    • Martensite destabilization in Au7Cu5Al4 shape-memory alloy
      Bhatia, V.; Kealley, Cat; Prior, M.; Cortie, M. (2011)
      Aging-induced changes in the austenite peak (AP) temperature of Au7Cu5Al4 shape-memory alloy are investigated. Whereas heat treating the parent phase at temperatures >140 degrees C or aging the martensite for long times ...
    • Strain rate effect on the mechanical response of duplex stainless steel
      Ameri, A.; Escobedo-Diaz, J.; Quadir, Md Zakaria; Ashraf, M.; Hutchison, W. (2018)
      © 2018 Author(s). The effect of strain rate on the mechanical response and microstructural evolution of Lean Duplex Stainless Steel 2101 (LDSS 2101) has been investigated. The compressive response of LDSS 2101 at different ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.