Pseudoelastic deformation and size effects during in situ transmission electron microscopy tensile testing of NiTi

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F12%3A00387724" target="_blank" >RIV/68081723:_____/12:00387724 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.actamat.2012.01.043" target="_blank" >http://dx.doi.org/10.1016/j.actamat.2012.01.043</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2012.01.043" target="_blank" >10.1016/j.actamat.2012.01.043</a>

Result language

angličtina

Original language name

Pseudoelastic deformation and size effects during in situ transmission electron microscopy tensile testing of NiTi

Original language description

The stress-induced B2-B19' transformation in aged 51 at.% NiTi was investigated using in situ straining transmission electron microscopy (TEM). Increased applied strain along [1 1 0](B2) transforms B2 into plates containing B19' variants that are relatedby a (1 1 0)(B2) compound twin plane. This atypical twin plane is explained by relaxing the invariant plane constraint in the crystallographic theory of martensite (CTM) to an invariant line constraint. The relaxation is rationalized from the thin foilgeometry. The relaxed CTM approach, coupled with conditions to maximize transformation strain along the loading axis and minimize elastic energy, predicts the observed twin interface, diffraction patterns, and interface with the B2 austenite. These results demonstrate subtleties in interpreting thin foil TEM results regarding martensitic transformations, and translating those results to bulk response. (C) 2012 Published by Elsevier Ltd. on behalf of Acta Materialia Inc.

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

JG - Metallurgy, metal materials

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2012

Confidentiality

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

Name of the periodical

Acta Materialia

ISSN

1359-6454

e-ISSN

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Volume of the periodical

60

Issue of the periodical within the volume

6-7

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

2770-2777

UT code for WoS article

000303952000030

EID of the result in the Scopus database

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