Next Article in Journal
Corrosion of Cast Aluminum Alloys: A Review
Previous Article in Journal
First Experimental Values for the Light Penetration Depth of Platinum and Iron Gases at 532 nm
Previous Article in Special Issue
Influence of Structural Defects on the Properties of Metamagnetic Shape Memory Alloys
Open AccessArticle

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

1
Institute of Thermomechanics, Czech Academy of Sciences, Dolejškova 5, 182 00 Prague, Czech Republic
2
Institute of Physics, Czech Academy of Sciences, Na Slovance 1999/2, 182 21 Prague, Czech Republic
3
Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague, Czech Republic
*
Author to whom correspondence should be addressed.
Metals 2020, 10(10), 1383; https://doi.org/10.3390/met10101383
Received: 15 September 2020 / Revised: 6 October 2020 / Accepted: 7 October 2020 / Published: 16 October 2020
(This article belongs to the Special Issue Shape Memory Alloys 2020)
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. Subsequently, we apply the RUS method to single crystals of three typical examples of shape memory alloys (Cu-Al-Ni, Ni-Mn-Ga, and NiTi), and discuss the advantages of using the laser-based contactless RUS arrangement for temperature-resolved measurements of elastic constants. View Full-Text
Keywords: shape memory alloys; martensitic transitions; phonon softening; resonant ultrasound spectroscopy; laser-ultrasound; elastic constants shape memory alloys; martensitic transitions; phonon softening; resonant ultrasound spectroscopy; laser-ultrasound; elastic constants
Show Figures

Figure 1

MDPI and ACS Style

Sedlák, P.; Janovská, M.; Bodnárová, L.; Heczko, O.; Seiner, H. Softening of Shear Elastic Coefficients in Shape Memory Alloys Near the Martensitic Transition: A Study by Laser-Based Resonant Ultrasound Spectroscopy. Metals 2020, 10, 1383.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop