Aging behavior in Cu-Al-Be shape memory alloy

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Título:	Aging behavior in Cu-Al-Be shape memory alloy
Autor/a:	Somoza, Alberto; Romero, Ricardo; Mañosa, Lluís; Planes Vila, Antoni
Otros autores:	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.
Materia(s):	-Transformacions martensítiques -Ciència dels materials -Martensitic transformations -Materials science
Derechos:	(c) American Institute of Physics, 1999
Tipo de documento:	Artículo Artículo - Versión publicada
Editor:	American Institute of Physics
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Bonnot, Erell; Romero, Ricardo; Illa i Tortós, Xavier; Mañosa, Lluís; Planes Vila, Antoni; Vives i Santa-Eulàlia, Eduard

Lashley, J. C.; Drymiotis, F. R.; Safarik, D. J.; Smith, J. L.; Romero, Ricardo; Fisher, R. A.; Planes Vila, Antoni; Mañosa, Lluís

Bonnot, Erell; Romero, Ricardo; Mañosa, Lluís; Planes Vila, Antoni; Vives i Santa-Eulàlia, Eduard

Stipcich, Marcelo; Marcos, Jordi; Planes Vila, Antoni; Romero, Ricardo

Gonzàlez Comas, Alfons; Obradó Llauradó, Eduard; Mañosa, Lluís; Planes Vila, Antoni; Chernenko, V. A.; Hattink, Bart Jan; Labarta, Amílcar

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