The temperature effect on the plastic deformation of the Mg88Zn7Y5 alloy with LPSO phase studied by in-situ synchrotron radiation diffraction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F21%3A00545943" target="_blank" >RIV/61389005:_____/21:00545943 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/21:10437608

Výsledek na webu

<a href="https://doi.org/10.1016/j.intermet.2021.107321" target="_blank" >https://doi.org/10.1016/j.intermet.2021.107321</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.intermet.2021.107321" target="_blank" >10.1016/j.intermet.2021.107321</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The temperature effect on the plastic deformation of the Mg88Zn7Y5 alloy with LPSO phase studied by in-situ synchrotron radiation diffraction

Popis výsledku v původním jazyce

The temperature dependence of the compressive deformation behavior of the Mg88Zn7Y5 alloy with a high volume fraction (similar to 85%) of the long-period stacking-ordered (LPSO) phase was studied by in-situ synchrotron radiation diffraction. The as-extruded microstructure exhibits a fully recrystallized alpha-Mg phase with a nearly random texture. The LPSO phase, identified as the 18R polytype, is represented by wavy lamellae elongated along the extrusion direction and has an intensive basal texture. The alloy compressed along the extrusion direction at room temperature shows a superior yield strength of 480 MPa. With increasing deformation temperature, the yield strength is reduced by 15% at 200 degrees C and by 46% at 300 degrees C, respectively. At all tested temperatures, the basal slip is activated in the alpha-Mg matrix far below the yield strength. The macroscopic yielding of the alloy is controlled by the activation of deformation kinking in the LPSO phase. The synchrotron radiation diffraction data indicate the stress localization at kinks with respect to the grains having the same orientation.

Název v anglickém jazyce

The temperature effect on the plastic deformation of the Mg88Zn7Y5 alloy with LPSO phase studied by in-situ synchrotron radiation diffraction

Popis výsledku anglicky

The temperature dependence of the compressive deformation behavior of the Mg88Zn7Y5 alloy with a high volume fraction (similar to 85%) of the long-period stacking-ordered (LPSO) phase was studied by in-situ synchrotron radiation diffraction. The as-extruded microstructure exhibits a fully recrystallized alpha-Mg phase with a nearly random texture. The LPSO phase, identified as the 18R polytype, is represented by wavy lamellae elongated along the extrusion direction and has an intensive basal texture. The alloy compressed along the extrusion direction at room temperature shows a superior yield strength of 480 MPa. With increasing deformation temperature, the yield strength is reduced by 15% at 200 degrees C and by 46% at 300 degrees C, respectively. At all tested temperatures, the basal slip is activated in the alpha-Mg matrix far below the yield strength. The macroscopic yielding of the alloy is controlled by the activation of deformation kinking in the LPSO phase. The synchrotron radiation diffraction data indicate the stress localization at kinks with respect to the grains having the same orientation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Intermetallics

ISSN

0966-9795

e-ISSN

1879-0216

Svazek periodika

138

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

107321

Kód UT WoS článku

000696934900003

EID výsledku v databázi Scopus

2-s2.0-85112536551