Super-plasticity of Mg alloys after rolling and ECAP

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F08%3A00019584" target="_blank" >RIV/61989100:27360/08:00019584 - 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
Super-plasticity of Mg alloys after rolling and ECAP
Original language description
The paper is focused on investigation of structure and properties of Mg alloys with fine-grained nanostructure. Forming of magnesium alloys with usual grain size 250 to 500 mm is difficult as they are characterised by low plastic properties. Applicationof SPD processes (Severe Plastic Deformation) enables us to achieve in these alloys as well an ultra-fine grains ? nano-grains ? and thus also high mechanical properties. Influence of the accumulation of deformation by the ECAP process on grain size andmechanical properties of the alloys AZ61 and AZ91 was determined experimentally. Application of the ECAP technology generated nano-structure with an average grains size around approx. d ~ 0.7 mkm. After the ECAP deformation eef > 6 these alloys gained super-plastic behaviour. Ductility of the alloy AZ91 was around 420 %. Experiment proved influence of extreme plastic deformations on grain refinement and on final values of mechanical properties.
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
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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