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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/68378271:_____/25:00642566

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Shape Memory and Superelasticity

ISSN

2199-384X

e-ISSN

2199-3858

Svazek periodika

11

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

10

Strana od-do

513-522

Kód UT WoS článku

001556792700001

EID výsledku v databázi Scopus

2-s2.0-105014147922