Complex flow stress model for a magnesium alloy AZ31 at hot forming

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F11%3A86081437" target="_blank" >RIV/61989100:27360/11:86081437 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1515/HTMP.2011.008" target="_blank" >http://dx.doi.org/10.1515/HTMP.2011.008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/HTMP.2011.008" target="_blank" >10.1515/HTMP.2011.008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Complex flow stress model for a magnesium alloy AZ31 at hot forming

Popis výsledku v původním jazyce

Compression tests of magnesium alloy Mg-3Al-1Zn (AZ31) at different temperatures and strain rate were made on plastometer Gleeble 3800. Deformation behaviour and particularly shape of stress-strain curves of the alloy AZ31 differ significantly at low andhigh values of Zener-Hollomon parameter Z. While the calculated activation energy Q was for both these areas practically identical (157 or 155 kJ mol-1), mathematical description of coordinates of the peak stress differs considerably. Regression and statistical analysis of experimental data have confirmed unequivocally, that it was impossible to describe by a uniform equation the whole set of data (i.e. traditional stress-strain curves, as well as those with atypical initial stage, given by the massivetwinning). That?s why two mathematical models were developed enabling prediction of the flow stress of investigated magnesium alloy in dependence on temperature, strain and strain rate, with inclusion of the influence of dynamic recrysta

Název v anglickém jazyce

Complex flow stress model for a magnesium alloy AZ31 at hot forming

Popis výsledku anglicky

Compression tests of magnesium alloy Mg-3Al-1Zn (AZ31) at different temperatures and strain rate were made on plastometer Gleeble 3800. Deformation behaviour and particularly shape of stress-strain curves of the alloy AZ31 differ significantly at low andhigh values of Zener-Hollomon parameter Z. While the calculated activation energy Q was for both these areas practically identical (157 or 155 kJ mol-1), mathematical description of coordinates of the peak stress differs considerably. Regression and statistical analysis of experimental data have confirmed unequivocally, that it was impossible to describe by a uniform equation the whole set of data (i.e. traditional stress-strain curves, as well as those with atypical initial stage, given by the massivetwinning). That?s why two mathematical models were developed enabling prediction of the flow stress of investigated magnesium alloy in dependence on temperature, strain and strain rate, with inclusion of the influence of dynamic recrysta

Druh

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

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

High temperature materials and processes

ISSN

0334-6455

e-ISSN

—

Svazek periodika

30

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

IL - Stát Izrael

Počet stran výsledku

7

Strana od-do

63-69

Kód UT WoS článku

000294207300009

EID výsledku v databázi Scopus

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