Journal of Materials Science

, Volume 41, Issue 17, pp 5455–5461 | Cite as

Study of γ2 precipitation in Cu–Al–Be shape memory alloys

  • M. T. Ochoa-Lara
  • H. Flores-ZúñigaEmail author
  • D. Rios-Jara


Thermal aging between 250 and 500 °C of ordered β phase in a polycrystalline Cu–Al–Be shape memory alloy were performed, and the formation of phase γ2 was studied with optical and transmission electron microscopies and XRD techniques. The growth of γ2 phase shows a polynomial behavior, and Avrami curves as well as a Time–Temperature–Transformation diagram were constructed from these results. In addition, the formation of stable γ2 precipitates was studied in aged Cu–Al–Be ribbons. The presence of α regions surrounding γ2 precipitates for longer aging times at higher temperatures was observed, giving a consistent precipitation scheme.


Shape Memory Alloy Aging Temperature Martensitic Transformation Temperature Longe Aging Time Polynomial Behavior 



The authors wish to thank Armando Reyes for his invaluable help with X-ray characterizations. The authors also thank CONACYT—Mexico for the financial support given to this project.


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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  • M. T. Ochoa-Lara
    • 1
  • H. Flores-Zúñiga
    • 1
    Email author
  • D. Rios-Jara
    • 1
    • 2
  1. 1.Centro de Investigación en Materiales Avanzados, CIMAVChihuahua, Chih.Mexico
  2. 2.Instituto de Investigaciones en Materiales, UNAMCiudad UniversitariaMexico D.F.Mexico

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