Type and density of dislocations in a plastically deformed long-period stacking ordered magnesium alloy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10407032" target="_blank" >RIV/00216208:11320/19:10407032 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=vUzMFHwp7~" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=vUzMFHwp7~</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2018.08.313" target="_blank" >10.1016/j.jallcom.2018.08.313</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Type and density of dislocations in a plastically deformed long-period stacking ordered magnesium alloy

Popis výsledku v původním jazyce

The density and type of dislocations were studied in a plastically deformed long-period stacking ordered (LPSO) phase of a Mg89Y7Zn4 (at.%) alloy. The volume fraction of the LPSO phase was as high as similar to 85%. The plastic deformation was carried out by uniaxial compression up to the strain of similar to 25% in both as-cast and extruded states. The order of magnitude of the dislocation density was similar to 10(14) m(-2) after compression to the strain of similar to 25% for both as-cast and extruded materials. It was also found that most of the dislocations formed in the LPSO phase during extrusion and compression were of &apos;a&apos;-type. The as-cast sample did not exhibit a strong crystallographic texture, but extrusion caused a texture in which the normal vector of the basal plane was perpendicular to the extrusion axis. The texture developed during extrusion yielded an anisotropic evolution of the dislocation density during subsequent compression. Namely, the density of dislocations developed during compression was lower when the deformation was carried out parallel to the extrusion axis. (c) 2018 Elsevier B.V. All rights reserved.

Název v anglickém jazyce

Type and density of dislocations in a plastically deformed long-period stacking ordered magnesium alloy

Popis výsledku anglicky

The density and type of dislocations were studied in a plastically deformed long-period stacking ordered (LPSO) phase of a Mg89Y7Zn4 (at.%) alloy. The volume fraction of the LPSO phase was as high as similar to 85%. The plastic deformation was carried out by uniaxial compression up to the strain of similar to 25% in both as-cast and extruded states. The order of magnitude of the dislocation density was similar to 10(14) m(-2) after compression to the strain of similar to 25% for both as-cast and extruded materials. It was also found that most of the dislocations formed in the LPSO phase during extrusion and compression were of &apos;a&apos;-type. The as-cast sample did not exhibit a strong crystallographic texture, but extrusion caused a texture in which the normal vector of the basal plane was perpendicular to the extrusion axis. The texture developed during extrusion yielded an anisotropic evolution of the dislocation density during subsequent compression. Namely, the density of dislocations developed during compression was lower when the deformation was carried out parallel to the extrusion axis. (c) 2018 Elsevier B.V. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

<a href="/cs/project/GA16-12075S" target="_blank" >GA16-12075S: Optimalizace mechanických vlastností pokročilých hořčíkových slitin s vysokou pevností</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

—

Svazek periodika

771

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

7

Strana od-do

629-635

Kód UT WoS článku

000449621500080

EID výsledku v databázi Scopus

2-s2.0-85052964168