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Applied Physics Letters / Volume 95 / Issue 23 / STRUCTURAL, MECHANICAL, THERMODYNAMIC, AND OPTICAL PROPERTIES OF CONDENSED MATTER

Appl. Phys. Lett. 95, 231908 (2009); http://dx.doi.org/10.1063/1.3269578 (3 pages)

Jerky elasticity: Avalanches and the martensitic transition in Cu74.08Al23.13Be2.79 shape-memory alloy

Ekhard K. H. Salje1, Johannes Koppensteiner2, Marius Reinecker2, Wilfried Schranz2, and Antoni Planes3

1Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, United Kingdom
2Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria
3Departament d’Estructura i Constituents de la Matèria, Facultat de Física, Universitat de Barcelona, Diagonal 647, E-08028 Barcelona, Catalonia, Spain

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(Received 5 October 2009; accepted 6 November 2009; published online 9 December 2009)

Jerky elasticity was observed by dynamical mechanical analyzer measurements in a single crystal of the shape memory alloy Cu74.08Al23.13Be2.79. Jerks appear as spikes in the dissipation of the elastic response function and relate to the formation of avalanches during the transformation between the austenite and the martensite phase. The statistics of the avalanches follows the predictions of avalanche criticality P(E)∝E−ε where P(E) is the probability of finding an avalanche with the energy E. This result reproduces, within experimental uncertainties, previous findings by acoustic emission techniques.

© 2009 American Institute of Physics

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KEYWORDS and PACS

Keywords

aluminium alloys, beryllium alloys, copper alloys, elasticity, martensitic transformations, shape memory effects

PACS

  • 81.40.Jj

    Elasticity and anelasticity, stress-strain relations

  • 64.70.kd

    Metals and alloys

  • 62.20.fg

    Shape-memory effect; yield stress; superelasticity

  • 81.40.Lm

    Deformation, plasticity, and creep

  • 81.30.Kf

    Martensitic transformations

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3269578

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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    L. Goncalves-Ferreira, S. A. T. Redfern, E. Atacho E, and E. K. H. Salje, Appl. Phys. Lett. 94, 081903 (2009)APPLAB000094000008081903000001
    W. Schranz, P. Sondergeld, A. V. Kityk, and E. K. H. Salje, Phys. Rev. B 80, 094110 (2009).

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    E. K. H. Salje, H. Zhang, H. Idrissi, D. Schryvers, M. A. Carpenter, X. Moya, and A. Planes, Phys. Rev. B 80, 134114 (2009).

    E. Bonnot, L. Mañosa, A. Planes, D. Soto-Parra, E. Vives, B. Ludwig, C. Strothkaemper, T. Fukuda, and T. Kakeshita, Phys. Rev. B 78, 184103 (2008).


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