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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Complex flow stress model for a magnesium alloy AZ31 at hot forming
Original language description
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
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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