Effect of microstructure on creep behaviour of cast Mg97Y2Zn1 (at.%) alloy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F12%3A00385500" target="_blank" >RIV/68081723:_____/12:00385500 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.msea.2012.01.023" target="_blank" >http://dx.doi.org/10.1016/j.msea.2012.01.023</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2012.01.023" target="_blank" >10.1016/j.msea.2012.01.023</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of microstructure on creep behaviour of cast Mg97Y2Zn1 (at.%) alloy

Popis výsledku v původním jazyce

The creep resistance of the Mg97Y2Zn1 (at.%) alloy in the as-cast condition and after a isochronal thermal treatment up to 560 C is evaluated from 200 C to 350 C. The as-cast alloy shows a microstructure characterized bymagnesiumdendrites and a Long-Period Stacking Ordered Structure in the interdendritic regions. The heat treated alloy shows a fully lamellar structure within magnesium grains. In both cases, the stress dependence of the creep rate presents two different regions. For low temperature and/or high strain rates, the creep behaviour shows a high stress exponent (n = 11) and high activation energy. The alloy behaves as a metal matrix composite where the magnesium matrix transfers part of its load to the LPSO-phase. Moreover, the lamellar structure within the magnesium grains in the thermal treated alloy results in an additional barrier against creep deformation. At high temperature and/or low strain rates, creep is controlled by non-basal dislocation slip. The cast alloy showe

Název v anglickém jazyce

Effect of microstructure on creep behaviour of cast Mg97Y2Zn1 (at.%) alloy

Popis výsledku anglicky

The creep resistance of the Mg97Y2Zn1 (at.%) alloy in the as-cast condition and after a isochronal thermal treatment up to 560 C is evaluated from 200 C to 350 C. The as-cast alloy shows a microstructure characterized bymagnesiumdendrites and a Long-Period Stacking Ordered Structure in the interdendritic regions. The heat treated alloy shows a fully lamellar structure within magnesium grains. In both cases, the stress dependence of the creep rate presents two different regions. For low temperature and/or high strain rates, the creep behaviour shows a high stress exponent (n = 11) and high activation energy. The alloy behaves as a metal matrix composite where the magnesium matrix transfers part of its load to the LPSO-phase. Moreover, the lamellar structure within the magnesium grains in the thermal treated alloy results in an additional barrier against creep deformation. At high temperature and/or low strain rates, creep is controlled by non-basal dislocation slip. The cast alloy showe

Druh

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

CEP obor

JI - Kompositní materiály

OECD FORD obor

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Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Materials Science and Engineering A-Structural materials

ISSN

0921-5093

e-ISSN

—

Svazek periodika

539

Číslo periodika v rámci svazku

MARCH

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

48-55

Kód UT WoS článku

000302047300008

EID výsledku v databázi Scopus

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