The role of adaptive martensite in magnetic shape memory alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00387010" target="_blank" >RIV/68378271:_____/12:00387010 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/adem.201200058" target="_blank" >http://dx.doi.org/10.1002/adem.201200058</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adem.201200058" target="_blank" >10.1002/adem.201200058</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The role of adaptive martensite in magnetic shape memory alloys

Popis výsledku v původním jazyce

Magnetic shape memory materials require a high twin boundary mobility and low hysteresis for applications mainly as actuators, sensors, and magnetocaloric cooling elements. Usually, outstanding properties are found only in samples with a modulated martensitic structure. Here, we analyze the question why a modulated structure is beneficial and show evidence that the modulated martensite is not an equilibrium phase but a nanoscale microstructure of non-modulated (NM) martensite. In this review, we combineresults from continuum and atomistic theory, as well as local and integral measurements on the model system Ni?Mn?Ga. Following the concept of adaptive martensite the modulated phase forms to minimize elastic energy near the phase boundary by introducing low-energy twin boundaries between lamellae of the NM martensite that have widths of a few unit cells.

Název v anglickém jazyce

The role of adaptive martensite in magnetic shape memory alloys

Popis výsledku anglicky

Magnetic shape memory materials require a high twin boundary mobility and low hysteresis for applications mainly as actuators, sensors, and magnetocaloric cooling elements. Usually, outstanding properties are found only in samples with a modulated martensitic structure. Here, we analyze the question why a modulated structure is beneficial and show evidence that the modulated martensite is not an equilibrium phase but a nanoscale microstructure of non-modulated (NM) martensite. In this review, we combineresults from continuum and atomistic theory, as well as local and integral measurements on the model system Ni?Mn?Ga. Following the concept of adaptive martensite the modulated phase forms to minimize elastic energy near the phase boundary by introducing low-energy twin boundaries between lamellae of the NM martensite that have widths of a few unit cells.

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

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Advanced Engineering Materials

ISSN

1438-1656

e-ISSN

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Svazek periodika

14

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

19

Strana od-do

562-581

Kód UT WoS článku

000307162100007

EID výsledku v databázi Scopus

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