Experimental Observations and Modeling of Localization in Superelastic NiTi Polycrystalline Alloys: State of the Art
M. Frosta, b, P. Sedláka, b, T. Ben Zinebd, e
aNuclear Physics Institute of the CAS, Řež 130, Řež, CZ-25068, Czechia
bInstitute of Thermomechanics of the CAS, Dolejškova 5, Praha, CZ-18200, Czechia
cUniversité de Lorraine, CNRS, Arts et Métiers ParisTech, LEM3, F-54000 Nancy, France
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We briefly review the recent experimental and theoretical research on the modeling of localized deformation in NiTi shape memory alloys. These alloys exhibit a remarkable response to mechanical loading with a relatively large reversible strains called superelasticity. We point up factors affecting formation, topology and propagation of localization patterns. These factors bring considerable difficulties to the development of constitutive models and superimpose with theoretical and practical issues related to the modeling of material instability. Some of the models are briefly introduced with a particular attention paid to characteristics of underlying theoretical frameworks.

DOI:10.12693/APhysPolA.134.847
PACS numbers: 62.20.fg, 46.32.+x