Title
Towards understanding anelasticity of the <tex>$\beta'_{1}$</tex> martensitic phase of Cu-Al-Ni
Author
Faculty/Department
Faculty of Applied Economics
Publication type
article
Publication
Amsterdam ,
Subject
Physics
Chemistry
Engineering sciences. Technology
Source (journal)
Journal of alloys and compounds. - Amsterdam
Source (book)
12th International Conference on Internal Friction and Ultrasonic, Attenuation in Solids (ICIFUAS-12), JUL 19-23, 1999, BUENOS AIRES, ARGENTINA
Volume/pages
310(2000) , p. 306-311
ISSN
0925-8388
ISI
000089480800064
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
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.
E-info
https://repository.uantwerpen.be/docman/iruaauth/ee25cd/90b4208.pdf
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