On the coupling between martensitic transformation and plasticity in NiTi: Experiments and continuum based modelling

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F18%3A00494708" target="_blank" >RIV/61388998:_____/18:00494708 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/18:00493539 RIV/61389005:_____/18:00494430 RIV/68407700:21340/18:00327085

Result on the web

<a href="http://dx.doi.org/10.1016/j.pmatsci.2018.07.003" target="_blank" >http://dx.doi.org/10.1016/j.pmatsci.2018.07.003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.pmatsci.2018.07.003" target="_blank" >10.1016/j.pmatsci.2018.07.003</a>

Result language

angličtina

Original language name

On the coupling between martensitic transformation and plasticity in NiTi: Experiments and continuum based modelling

Original language description

Recent macroscopic experimental and theoretical evidence on the stress-strain-temperature behavior of NiTi beyond the strain recoverability limits (large strain, high stress, high temperature), where reversible martensitic transformation tends to proceed together with irreversible plastic deformation processes, is reviewed. Model predictions on the transformation – plasticity coupling are laid out based on the mathematical theory of martensitic microstructures and the crystal plasticity theory. A particular attention is paid to the strain compatibility at moving phase interfaces that may have a direct impact on the plasticity accompanying the martensitic transformation. It is suggested that strong transformation-plasticity coupling shall be expected during the reverse martensitic transformation. Macroscopic models from the literature capable of simulation of thermomechanical responses of NiTi polycrystals due to coexisting martensitic transformation and plastic deformation are reviewed. Dedicated thermomechanical loading experiments on superelastic and actuator NiTi wires aimed at improving our understanding of the coupling between martensitic transformation and plasticity are presented. Based on the results of in-situ studies during thermomechanical loading experiments (electric resistance, synchrotron X-ray diffraction, surface strain by DIC, relaxations) and characterization microstructures in deformed wires by TEM, it is shown that: (i) microstructures and consequently functional properties of annealed NiTi wires can be purposely manipulated by thermomechanical processing, (ii) shape setting of NiTi can be performed at relatively low temperatures (<300 °C), (iii) strain drift of NiTi actuators can be brought under control utilizing the knowledge derived from the presented experiments.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

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

2018

Confidentiality

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

Name of the periodical

Progress in Materials Science

ISSN

0079-6425

e-ISSN

—

Volume of the periodical

98

Issue of the periodical within the volume

10

Country of publishing house

GB - UNITED KINGDOM

Number of pages

50

Pages from-to

249-298

UT code for WoS article

000445714000005

EID of the result in the Scopus database

2-s2.0-85049882428