Title: Towards understanding anelasticity of the ß(1)' martensitic phase of Cu-Al-Ni
Authors: Kustov, S. ×
Golyandin, S.
Sapozhnikov, K.
Van Humbeeck, Jan
De Batist, R. #
Issue Date: 2000
Publisher: Elsevier Sequoia
Series Title: Journal of Alloys and Compounds vol:310 issue:1-2 pages:306-311
Abstract: The present work continues the series of experimental investigations undertaken in order to elucidate the mechanisms controlling elastic and anelastic properties of the beta(1)' martensitic phase of Cu-based shape memory alloys. The paper reports an attempt to distinguish between 'dislocation' and 'interface' mechanisms of the internal friction in the beta(1)' martensitic phase of Cu-Al-Ni single crystals. Two types of experiments have been performed. First, the ultrasonic strain amplitude-independent and amplitude-dependent internal friction (ADIF) of a monovariant specimen for temperatures 90-300 K is carefully re-examined. Second, in situ measurements of the ADIF and of the influence of ultrasonic oscillations on the plastic deformation (acoustoplastic effect) were carried out during quasistatic deformation of a quenched polyvariant specimen. Experimental results support a dislocation rather than an interface mechanism of anelasticity, at least at ultrasonic frequencies and moderate strain amplitudes. (C) 2000 Elsevier Science S.A. All rights reserved.
ISSN: 0925-8388
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physical Metallurgy and Materials Engineering Section (-)
× corresponding author
# (joint) last author

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