Instability of cyclic superelastic deformation of NiTi investigated by synchrotron X-ray diffraction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00448169" target="_blank" >RIV/68378271:_____/15:00448169 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/15:00235337

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.actamat.2015.04.039" target="_blank" >http://dx.doi.org/10.1016/j.actamat.2015.04.039</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2015.04.039" target="_blank" >10.1016/j.actamat.2015.04.039</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Instability of cyclic superelastic deformation of NiTi investigated by synchrotron X-ray diffraction

Popis výsledku v původním jazyce

Motivated by an assumption that the instability of the cyclic tensile superelastic behavior of NiTi polycrystal is linked to its fatigue performance (number of cycles till failure), the instability was investigated by high resolution in situ synchrotron X-ray diffraction method. NiTi wires were cyclically deformed in tension at room temperature while X-ray diffraction patterns were recorded in three preselected states along the superelastic stress–strain curve, analyzed and interpreted in terms of the gradual evolution of microstructural state during cycling. It is found that the cyclic instability is due to the gradual redistribution of internal stresses originating from the accumulation of incremental plastic strains accompanying the stress induced martensitic transformation in constrained polycrystalline environment.

Název v anglickém jazyce

Instability of cyclic superelastic deformation of NiTi investigated by synchrotron X-ray diffraction

Popis výsledku anglicky

Motivated by an assumption that the instability of the cyclic tensile superelastic behavior of NiTi polycrystal is linked to its fatigue performance (number of cycles till failure), the instability was investigated by high resolution in situ synchrotron X-ray diffraction method. NiTi wires were cyclically deformed in tension at room temperature while X-ray diffraction patterns were recorded in three preselected states along the superelastic stress–strain curve, analyzed and interpreted in terms of the gradual evolution of microstructural state during cycling. It is found that the cyclic instability is due to the gradual redistribution of internal stresses originating from the accumulation of incremental plastic strains accompanying the stress induced martensitic transformation in constrained polycrystalline environment.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Acta Materialia

ISSN

1359-6454

e-ISSN

—

Svazek periodika

94

Číslo periodika v rámci svazku

Aug

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

257-270

Kód UT WoS článku

000357143500024

EID výsledku v databázi Scopus

2-s2.0-84929623552