Evolution of elastic constants of the NiTi shape memory alloy during a stress-induced martensitic transformation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F21%3A00542094" target="_blank" >RIV/61388998:_____/21:00542094 - isvavai.cz</a>
Alternative codes found
RIV/61389005:_____/21:00542094 RIV/68407700:21340/21:00350097
Result on the web
<a href="https://doi.org/10.1016/j.actamat.2021.116718" target="_blank" >https://doi.org/10.1016/j.actamat.2021.116718</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.actamat.2021.116718" target="_blank" >10.1016/j.actamat.2021.116718</a>

Result language
angličtina
Original language name
Evolution of elastic constants of the NiTi shape memory alloy during a stress-induced martensitic transformation
Original language description
We carried out an in situ ultrasonic characterization of a NiTi shape memory alloy polycrystal subjected to pseudoplastic straining. The measurement leads to a full elastic tensor of the transversely isotropic polycrystal during the stress-induced austenite -> R-phase -> B19' martensite transformation. The results reveal a strong anisotropy of the R-phase already in the low-strain state, which is then retained in character throughout the R-phase -> martensite transition and even in the stress-free oriented martensite after the unloading. By using a micromechanical model based on homogenization approaches, we show that this strong anisotropy is probably related to twin boundaries both in the R-phase and in martensite rather than to the anisotropy of the unit cell and the crystallographic texture.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10307 - Acoustics

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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