Monitoring tensile fatigue of superelastic NiTi Wire in liquids by electrochemical potential

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00449564" target="_blank" >RIV/68378271:_____/15:00449564 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s40830-015-0020-5" target="_blank" >http://dx.doi.org/10.1007/s40830-015-0020-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s40830-015-0020-5" target="_blank" >10.1007/s40830-015-0020-5</a>

Result language

angličtina

Original language name

Monitoring tensile fatigue of superelastic NiTi Wire in liquids by electrochemical potential

Original language description

Fatigue of superelastic NiTi wires was investigated by cyclic tension in simulated biofluid. The state of the surface of the fatigued NiTi wire was monitored by following the evolution of the electrochemical open circuit potential (OCP) together with macroscopic stresses and strains. The ceramic TiO2 oxide layer on the NiTi wire surface cannot withstand the large transformation strain and fractures in the first cycle. Based on the analysis of the results of in situ OCP experiments and SEM observation ofcracks, it is claimed that the cycled wire surface develops mechanochemical reactions at the NiTi/liquid interface leading to cumulative generation of hydrogen, uptake of the hydrogen by the NiTi matrix, local loss of the matrix strength, crack transferinto the NiTi matrix, accelerated crack growth, and ultimately to the brittle fracture of the wire.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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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

2015

Confidentiality

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

Name of the periodical

Shape Memory and Superelasticity

ISSN

2199-384X

e-ISSN

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Volume of the periodical

1

Issue of the periodical within the volume

2

Country of publishing house

DE - GERMANY

Number of pages

27

Pages from-to

204-230

UT code for WoS article

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EID of the result in the Scopus database

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