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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F10%3A86075817" target="_blank" >RIV/61989100:27360/10:86075817 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Description of the Atypical Stress-strain Curves at Forming of AZ31 Magnesium Alloy
Original language description
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.
Czech name
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Czech description
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Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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