In situ TEM study of deformation twinning in Ni-Mn-Ga non-modulated martensite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F13%3A00395811" target="_blank" >RIV/68378271:_____/13:00395811 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.actamat.2013.05.020" target="_blank" >http://dx.doi.org/10.1016/j.actamat.2013.05.020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2013.05.020" target="_blank" >10.1016/j.actamat.2013.05.020</a>

Jazyk výsledku

angličtina

Název v původním jazyce

In situ TEM study of deformation twinning in Ni-Mn-Ga non-modulated martensite

Popis výsledku v původním jazyce

The straining of non-modulated (NM) Ni?Mn?Ga martensite was studied by in situ transmission electron microscopy (TEM). Initially, the self-accommodated NM martensitic structure consists of internally twinned domains. During straining, the detwinning process starts within these domains. The internal twin variant more favorably oriented to the stress grows at the expense of the other one. In the detwinned, single-variant domain, a new twin variant can form, gradually replacing the existing variant via thetwinning process. Both processes?detwinning and new twinning?proceed by the same mechanism, namely by the movement of twinning dislocations along the twin boundary. Lattice dislocations are also created in the detwinning process. While the boundaries between the internal twins are coherent and mobile, the boundaries between the internally twinned domains are incoherent, strained and not mobile. Possible reasons for this discrepancy are discussed.

Název v anglickém jazyce

In situ TEM study of deformation twinning in Ni-Mn-Ga non-modulated martensite

Popis výsledku anglicky

The straining of non-modulated (NM) Ni?Mn?Ga martensite was studied by in situ transmission electron microscopy (TEM). Initially, the self-accommodated NM martensitic structure consists of internally twinned domains. During straining, the detwinning process starts within these domains. The internal twin variant more favorably oriented to the stress grows at the expense of the other one. In the detwinned, single-variant domain, a new twin variant can form, gradually replacing the existing variant via thetwinning process. Both processes?detwinning and new twinning?proceed by the same mechanism, namely by the movement of twinning dislocations along the twin boundary. Lattice dislocations are also created in the detwinning process. While the boundaries between the internal twins are coherent and mobile, the boundaries between the internally twinned domains are incoherent, strained and not mobile. Possible reasons for this discrepancy are discussed.

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

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

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Svazek periodika

61

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

5290-5299

Kód UT WoS článku

000322750800016

EID výsledku v databázi Scopus

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