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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Nehomogenita mikrostruktury a creep ECAP hliníku
 Sklenička, Václav ; Král, Petr ; Ilucová, Lucia ; Saxl, Ivan ; Dvořák, Jiří ; Svoboda, Milan
High purity (99.99%) pure aluminium processed by equal channel angular pressing (ECAP) was examined in terms of the ECAP microstructure inhomogeneity and its creep behaviour. The results indicate that an inhomogeneity of the ECAP microstructure in mesoscopic scale may influence the creep behaviour of the pressed material.
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Creep Behaviour of Aluminium after Severe Plastic Deformation (ECAP)
 Král, Petr ; Dvořák, Jiří ; Svoboda, Milan ; Sklenička, Václav
In this work the behaviour of ECAP aluminium with different number of passes at the creep tests was studied. The data indicated that an increase fraction of high angle boundaries has a strong effect on the creep properties of ECAP aluminium which can be explained by extensive grain boundary sliding contributing to the total creep deformation. However, the samples of ECAP aluminium with the identical number of ECAP passes showed significant differences of creep properties. The observed scatter in the creep behaviour is probably a direct consequence of different microstructures in the as-pressed state after ECAP.
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