In situ Observation of Elastic Instability of Stress-Induced B19′ Martensite in Thin NiTi Wires

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F25%3A00642566" target="_blank" >RIV/61388998:_____/25:00642566 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/25:00642566
Result on the web
<a href="https://link.springer.com/article/10.1007/s40830-025-00565-6" target="_blank" >https://link.springer.com/article/10.1007/s40830-025-00565-6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s40830-025-00565-6" target="_blank" >10.1007/s40830-025-00565-6</a>

Result language
angličtina
Original language name
In situ Observation of Elastic Instability of Stress-Induced B19′ Martensite in Thin NiTi Wires
Original language description
A laser-ultrasonic approach was used to measure elastic properties of a superelastic nickel-titanium wire withnthe aim to evaluate their evolution with stress and temperature in stress-induced martensite. It was observed that this evolution can be well described by a single smooth surface in the stress–temperature space, with the values of Young’s modulus ranging from 30 to 50 GPa. The evolution of the modulus was then monitored in situ with further heating under fixed strain, that is, during the shape setting. The results revealed that the martensite phase experienced further softening during this process, reaching Young’s modulus of nearly 10 GPa at high temperatures and high stresses. In addition, the measurement enabled a direct detection of the initiation and termination temperatures of the shape setting from the elasticity data, which was used to show that it occurs in the same temperature interval for tension-inducednand torsion-induced martensite.n
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
—
OECD FORD branch
20501 - Materials engineering

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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