Deformation of the Shape Memory and Surface Microrelief of Ni–Fe–Ga–Co and Cu–Al–Ni Alloy Single Crystals


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We present the results of experimental studies of the return of Ni–Fe–Ga–Co and Cu–Al–Ni single crystals to the initial form at the macro- and microlevels after their deformation by compression and subsequent restorative heating. It is found that the geometric dimensions of the sample are reproduced with high accuracy (up to 20 μm). The microrelief appearing on the initially polished surface during crystal compression (the arithmetic mean profile deviation Ra ≈ 0.25–0.75 μm, the average spacing of local protrusions of the profile S ≈ 0.027–0.11 mm) is not removed by subsequent heating and remains with further multiple repetition of deformation–restoration cycles.

Sobre autores

Yu. Nosov

Ioffe Physical Technical Institute

Autor responsável pela correspondência
Email: Yu.nosov@mail.ioffe.ru
Rússia, St. Petersburg, 194021

A. Soldatov

Ioffe Physical Technical Institute

Email: Yu.nosov@mail.ioffe.ru
Rússia, St. Petersburg, 194021

V. Krymov

Ioffe Physical Technical Institute

Email: Yu.nosov@mail.ioffe.ru
Rússia, St. Petersburg, 194021

S. Pul’nev

Ioffe Physical Technical Institute

Email: Yu.nosov@mail.ioffe.ru
Rússia, St. Petersburg, 194021

V. Nikolaev

Ioffe Physical Technical Institute; St. Petersburg National Research University of Information Technologies, Mechanics, and Optics (ITMO University)

Email: Yu.nosov@mail.ioffe.ru
Rússia, St. Petersburg, 194021; St. Petersburg, 197101

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