Non-linear elastic behavior of Ni-Fe-Ga(Co) shape memory alloy and Landau-energy landscape reconstruction

0559107 - ÚT 2023 RIV GB eng J - Journal Article
Zoubková, K. - Seiner, Hanuš - Sedlák, Petr - Villa, E. - Tahara, M. - Hosoda, H. - Chernenko, V.A.
Non-linear elastic behavior of Ni-Fe-Ga(Co) shape memory alloy and Landau-energy landscape reconstruction.
Acta Materialia. Roč. 224, February (2022), č. článku 117530. ISSN 1359-6454. E-ISSN 1873-2453
R&D Projects: GA ČR(CZ) GA21-06613S
Institutional support: RVO:61388998
Keywords : ultrasonic characterization * non-linear behavior * austenite-to-martensite phase transformation * energy landscape * martensitic phase transformation
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 9.4, year: 2022
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S1359645421009083?via%3Dihub

We study the elastic behavior of single crystals of the Ni-Fe-Ga(Co) ferromagnetic shape memory alloy in a broad temperature range. Using tensile stress-strain measurements and ultrasonic characterization, we show that austenite and martensite phases of the given alloy exhibit strongly non-linear elastic responses, and we utilize the non-linear stress-strain data for constructing an energy function describing the observed behavior within the framework of the 4th-order Landau theory.
Permanent Link: https://hdl.handle.net/11104/0332619