TEM analysis of the deformation microstructure of polycrystalline cobalt plastically strained in tension

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10370108" target="_blank" >RIV/00216208:11320/17:10370108 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.matchar.2017.09.038" target="_blank" >http://dx.doi.org/10.1016/j.matchar.2017.09.038</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matchar.2017.09.038" target="_blank" >10.1016/j.matchar.2017.09.038</a>

Jazyk výsledku

angličtina

Název v původním jazyce

TEM analysis of the deformation microstructure of polycrystalline cobalt plastically strained in tension

Popis výsledku v původním jazyce

The microstructure evolution of hexagonal close-packed cobalt at different stages of work hardening has been studied. The deformation microstructure of polycrystalline samples upon a tension test was investigated by Transmission Electron Microscopy (TEM). Corresponding straining mechanisms were also identified by acoustic emission measurements. It was shown that dislocation glide is the predominant deformation mechanism during the first stage of plastic deformation, while twinning becomes the prominent strain accommodation mechanism in the later stage. A detailed TEM study using electron diffraction allowed identifying different types of twins activated during tensile testing. Four single twinning modes were identified, from which two types correspond to tensile strain and two types to compressive strain (with respect to the c direction), double twins were also observed. A relative importance of various systems is estimated and it is shown that the vast majority of twins correspond to the {10 (1) over bar2} twinning system.

Název v anglickém jazyce

TEM analysis of the deformation microstructure of polycrystalline cobalt plastically strained in tension

Popis výsledku anglicky

The microstructure evolution of hexagonal close-packed cobalt at different stages of work hardening has been studied. The deformation microstructure of polycrystalline samples upon a tension test was investigated by Transmission Electron Microscopy (TEM). Corresponding straining mechanisms were also identified by acoustic emission measurements. It was shown that dislocation glide is the predominant deformation mechanism during the first stage of plastic deformation, while twinning becomes the prominent strain accommodation mechanism in the later stage. A detailed TEM study using electron diffraction allowed identifying different types of twins activated during tensile testing. Four single twinning modes were identified, from which two types correspond to tensile strain and two types to compressive strain (with respect to the c direction), double twins were also observed. A relative importance of various systems is estimated and it is shown that the vast majority of twins correspond to the {10 (1) over bar2} twinning system.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

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

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Materials Characterization

ISSN

1044-5803

e-ISSN

—

Svazek periodika

134

Číslo periodika v rámci svazku

neuveden

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

76-83

Kód UT WoS článku

000419416400011

EID výsledku v databázi Scopus

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