Title:
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Aging behavior in Cu-Al-Be shape memory alloy
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Author:
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Somoza, Alberto; Romero, Ricardo; Mañosa, Lluís; Planes Vila, Antoni
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Other authors:
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Universitat de Barcelona |
Abstract:
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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. |
Subject(s):
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-Transformacions martensítiques -Ciència dels materials -Martensitic transformations -Materials science |
Rights:
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(c) American Institute of Physics, 1999
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Document type:
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Article Article - Published version |
Published by:
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American Institute of Physics
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