High-Temperature Mechanical Behavior of Extruded Mg-Y-Zn Alloy Containing LPSO Phases

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F13%3A00398583" target="_blank" >RIV/68081723:_____/13:00398583 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s11661-013-1628-8" target="_blank" >http://dx.doi.org/10.1007/s11661-013-1628-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11661-013-1628-8" target="_blank" >10.1007/s11661-013-1628-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

High-Temperature Mechanical Behavior of Extruded Mg-Y-Zn Alloy Containing LPSO Phases

Popis výsledku v původním jazyce

The high-temperature mechanical behavior of extruded Mg(97-3x)Y(2x)Zn(x) (at. pct) alloys is evaluated from 473 K to 673 K. The microstructure of the extruded alloys is characterized by Long Period Stacking Ordered structure (LPSO) elongated particles within the magnesium matrix. At low temperature and high strain rates, their creep behavior shows a high stress exponent (n = 11) and high activation energy. Alloys behave as a metal matrix composite where the magnesium matrix transfers part of its load tothe LPSO phase. At high-temperature and/or low stresses, creep is controlled by nonbasal dislocation slip. At intermediate and high strain rates at 673 K and at intermediate strain rates between 623 K and 673 K, the extruded alloys show superplastic deformation with elongations to failure higher than 200 pct. Cracking of coarse LPSO second-phase particles and their subsequent distribution in the magnesium matrix take place during superplastic deformation, preventing magnesium grain grow

Název v anglickém jazyce

High-Temperature Mechanical Behavior of Extruded Mg-Y-Zn Alloy Containing LPSO Phases

Popis výsledku anglicky

The high-temperature mechanical behavior of extruded Mg(97-3x)Y(2x)Zn(x) (at. pct) alloys is evaluated from 473 K to 673 K. The microstructure of the extruded alloys is characterized by Long Period Stacking Ordered structure (LPSO) elongated particles within the magnesium matrix. At low temperature and high strain rates, their creep behavior shows a high stress exponent (n = 11) and high activation energy. Alloys behave as a metal matrix composite where the magnesium matrix transfers part of its load tothe LPSO phase. At high-temperature and/or low stresses, creep is controlled by nonbasal dislocation slip. At intermediate and high strain rates at 673 K and at intermediate strain rates between 623 K and 673 K, the extruded alloys show superplastic deformation with elongations to failure higher than 200 pct. Cracking of coarse LPSO second-phase particles and their subsequent distribution in the magnesium matrix take place during superplastic deformation, preventing magnesium grain grow

Druh

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

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Metallurgical and Materials Transactions A

ISSN

1073-5623

e-ISSN

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Svazek periodika

44A

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

2869-2883

Kód UT WoS článku

000317930200040

EID výsledku v databázi Scopus

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