Softening of Shear Elastic Coefficients in Shape Memory Alloys Near the Martensitic Transition: A Study by Laser-Based Resonant Ultrasound Spectroscopy

0535891 - ÚT 2021 RIV CH eng J - Journal Article
Sedlák, Petr - Janovská, Michaela - Bodnárová, Lucie - Heczko, Oleg - Seiner, Hanuš
Softening of Shear Elastic Coefficients in Shape Memory Alloys Near the Martensitic Transition: A Study by Laser-Based Resonant Ultrasound Spectroscopy.
Metals. Roč. 10, č. 10 (2020), č. článku 1383. E-ISSN 2075-4701
R&D Projects: GA MŠMT(CZ) EF15_003/0000493; GA ČR(CZ) GA20-12624S
Institutional support: RVO:61388998 ; RVO:68378271
Keywords : shape memory alloys * martensitic transitions * phonon softening * resonant ultrasound spectroscopy * laser-ultrasound * elastic constants
OECD category: Acoustics; Condensed matter physics (including formerly solid state physics, supercond.) (FZU-D)
Impact factor: 2.351, year: 2020
Method of publishing: Limited access
https://www.mdpi.com/2075-4701/10/10/1383

We discuss the suitability of laser-based resonant ultrasound spectroscopy (RUS) for the characterization of soft shearing modes in single crystals of shape memory alloys that are close to the transition temperatures. We show, using a numerical simulation, that the RUS method enables the accurate determination of the c‘ shear elastic coefficient, even for very strong anisotropy, and without being sensitive to misorientations of the used single crystal.
Permanent Link: http://hdl.handle.net/11104/0315775