Microstructure and high temperature deformation of an ultra-fine grained ECAP AA7075 aluminium alloy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10193130" target="_blank" >RIV/00216208:11320/13:10193130 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.3139/146.110833" target="_blank" >http://dx.doi.org/10.3139/146.110833</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3139/146.110833" target="_blank" >10.3139/146.110833</a>
Alternative languages
Result language
angličtina
Original language name
Microstructure and high temperature deformation of an ultra-fine grained ECAP AA7075 aluminium alloy
Original language description
An AA 7075 aluminium alloy with an ultra-fine grained structure was prepared through equal channel angular pressing (ECAP) at pressing temperatures T-ECAP of 120, 170, and 220 degrees C. A decrease in T-ECAP from 220 to 120 degrees C was found to lead toa more pronounced refinement of the microstructure and to worse stability of the microstructure -the onset of grain coarsening was displaced to lower temperatures. The material pressed with the highest T-ECAP exhibited superplastic behaviour at temperatures close to 400 C and grain boundary sliding was identified as the dominant operating deformation mechanism. The materials prepared with both of the lower T-ECAP exhibited only enhanced ductility of about 200%, however this behaviour was observed at temperatures as low as 200 degrees C. It was found that this "low temperature superplasticity" resulted from a combined operation of grain boundary sliding at selected grain boundaries and glide of lattice dislocations.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA106%2F07%2F0303" target="_blank" >GA106/07/0303: The role of grain boundaries in high-temperature plastic deformation of fine-grained materials</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Materials Research
ISSN
1862-5282
e-ISSN
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Volume of the periodical
104
Issue of the periodical within the volume
1
Country of publishing house
DE - GERMANY
Number of pages
8
Pages from-to
1-8
UT code for WoS article
000313923600001
EID of the result in the Scopus database
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