Activation energy of the aluminium alloy Mg-3Al-1Zn in hot forming

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F09%3A00022050" target="_blank" >RIV/61989100:27360/09:00022050 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Activation energy of the aluminium alloy Mg-3Al-1Zn in hot forming

Popis výsledku v původním jazyce

Compression tests of specimens from the aluminium alloy Mg-3Al-1Zn (AZ31) at temperature T = 250 to 450 °C and strain rate gama=0.01 to 10 s-1 were performed. From the peaks of the obtained stress-strain curves, the values of the activation energy Q andother material constants, usable for the description of the maximum stress and the kinetics of the dynamic recrystallization in dependence on the Zener-Hollomon parameter Z were expressed numerically. The deformation behaviour and especially the shape ofthe stress-strain curves differ significantly at the low and high values of the parameter Z. The boundary between these areas was determined mathematically as Z = 2.9E+13 s-1. While the specified activation energy Q was for these both areas nearly identical (157 or 155 kJ/mol, respectively), the mathematical description of the coordinates of the stress peak is markedly different. The changes in the deformation behaviour consist in a strong effect of twinning in the initial stages of for

Název v anglickém jazyce

Activation energy of the aluminium alloy Mg-3Al-1Zn in hot forming

Popis výsledku anglicky

Compression tests of specimens from the aluminium alloy Mg-3Al-1Zn (AZ31) at temperature T = 250 to 450 °C and strain rate gama=0.01 to 10 s-1 were performed. From the peaks of the obtained stress-strain curves, the values of the activation energy Q andother material constants, usable for the description of the maximum stress and the kinetics of the dynamic recrystallization in dependence on the Zener-Hollomon parameter Z were expressed numerically. The deformation behaviour and especially the shape ofthe stress-strain curves differ significantly at the low and high values of the parameter Z. The boundary between these areas was determined mathematically as Z = 2.9E+13 s-1. While the specified activation energy Q was for these both areas nearly identical (157 or 155 kJ/mol, respectively), the mathematical description of the coordinates of the stress peak is markedly different. The changes in the deformation behaviour consist in a strong effect of twinning in the initial stages of for

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

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Hutnické listy

ISSN

0018-8069

e-ISSN

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Svazek periodika

62

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

4

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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