Transformation Volume Effects on Shape Memory Alloys

Metals

Volodymyr A. Chernenko⁴  Victor A. L’vov²  Eduard Cesari³  Anna Kosogor¹ 

[1] Institute of Magnetism, 36-b Vernadsky Blvd, Kyiv 03142, Ukraine; E-Mail:;Department of Radiophysics, Taras Shevchenko University, Glushkov Str. 2, build. 5, Kyiv 01601, Ukraine; E-Mail:;Department of Physics, University of Balearic Islands, Ctra. de Valldemossa, km 7.5, Palma de Mallorca 07122, Spain; E-Mail:;BCMaterials, University of the Basque Country (UPV/EHU), Bilbao 48080, Spain; E-Mail:

关键词: shape memory alloy;    volume change;    elastic modulus;    crystal defects;    martensite stabilization;    entropy change;   

DOI  :  10.3390/met3030237

来源: mdpi

【 摘 要 】

It is generally accepted that the martensitic transformations (MTs) in the shape memory alloys (SMAs) are mainly characterized by the shear deformation of the crystal lattice that arises in the course of MT, while a comparatively small volume change during MT is considered as the secondary effect, which can be disregarded when the basic characteristics of MTs and functional properties of SMAs are analyzed. This point of view is a subject to change nowadays due to the new experimental and theoretical findings. The present article elucidates (i) the newly observed physical phenomena in different SMAs in their relation to the volume effect of MT; (ii) the theoretical analysis of the aforementioned volume-related phenomena.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.