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Aging behavior in Cu-Al-Be shape memory alloy

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  • Additional Information
    • Publication Information:
      American Institute of Physics
    • Publication Date:
      1999
    • Collection:
      Dipòsit Digital de la Universitat de Barcelona
    • Abstract:
      This article reports positron annihilation spectroscopy and calorimetric measurements of the aging behavior in a Cu¿Al¿Be shape memory alloy. An excess of single vacancies is retained in the alloy as a result of a quench. All vacancies in excess disappear after long aging time, and a migration energy EM = 1.0±0.1 eV for this process has been found to be larger than in other Cu-based shape memory alloys. The good correlation found for the concentration of vacancies and the shift in the martensitic transition temperature demonstrates that, in Cu¿Al¿Be, changes in the transition after a quench are deeply related to the excess of vacancies.
    • File Description:
      4 p.; application/pdf
    • ISSN:
      0021-8979
    • Relation:
      Reproducció del document publicat a: http://dx.doi.org/10.1063/1.369431; Journal of Applied Physics, 1999, vol. 85, núm. 1, p. 130-133; http://dx.doi.org/10.1063/1.369431; http://hdl.handle.net/2445/24158; 147487
    • Online Access:
      http://hdl.handle.net/2445/24158
    • Rights:
      (c) American Institute of Physics, 1999 ; info:eu-repo/semantics/openAccess
    • Accession Number:
      edsbas.32093A49