Description of the Atypical Stress-strain Curves at Forming of AZ31 Magnesium Alloy

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Description of the Atypical Stress-strain Curves at Forming of AZ31 Magnesium Alloy

Popis výsledku v původním jazyce

The axially symmetric specimens from the alloy of type AZ31 underwent the hot pressure tests on simulator Gleeble 3800. The experiments were implemented at temperatures T = 250 to 450 oC with the various strain rate = 0.01 to 10 s-1. As resulted from evaluation of the previous experiments, the deformation behaviour and especially the shape of stress curves of the alloy AZ31 are significantly different at low and high values of Zener-Hollomon parameter Z. The shape of the resulting stress-strain curves,which were recalculated from the data measured during the forming, is of a double type. The first type is a conventional one, where the changing flow stress showed the usual phases of strengthening, the subsequent decrease in strength due to the dynamicrecrystallization and the steady-state. The second type of the stress curve is atypical by its concave start-up phase in the area of strengthening.

Název v anglickém jazyce

Description of the Atypical Stress-strain Curves at Forming of AZ31 Magnesium Alloy

Popis výsledku anglicky

The axially symmetric specimens from the alloy of type AZ31 underwent the hot pressure tests on simulator Gleeble 3800. The experiments were implemented at temperatures T = 250 to 450 oC with the various strain rate = 0.01 to 10 s-1. As resulted from evaluation of the previous experiments, the deformation behaviour and especially the shape of stress curves of the alloy AZ31 are significantly different at low and high values of Zener-Hollomon parameter Z. The shape of the resulting stress-strain curves,which were recalculated from the data measured during the forming, is of a double type. The first type is a conventional one, where the changing flow stress showed the usual phases of strengthening, the subsequent decrease in strength due to the dynamicrecrystallization and the steady-state. The second type of the stress curve is atypical by its concave start-up phase in the area of strengthening.

Druh

D - Stať ve sborníku

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

2010

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2010

ISBN

978-80-87294-17-8

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

715-719

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Rožnov pod Radhoštěm

Datum konání akce

18. 5. 2010

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000286658700121