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Statements

Subject Item
n2:RIV%2F00216208%3A11320%2F12%3A10130254%21RIV13-GA0-11320___
rdf:type
n9:Vysledek skos:Concept
rdfs:seeAlso
http://dx.doi.org/10.1007/s10853-012-6538-4
dcterms:description
Commercial MgAlZn alloy AZ31 was processed by hot extrusion and equal channel angular pressing (ECAP) known as EX-ECAP. Microstructure and defect structure evolution with strain due to ECAP were investigated by TEM, positron annihilation spectroscopy (PAS), and X-ray diffraction. Significant grain refinement was obtained by EX-ECAP. In the extruded condition relatively low density of dislocations was determined by PAS. Sharp increase of dislocation density occurred during the first two passes of ECAP, followed by the saturation and even a decline manifesting the dynamic recovery at higher strains. XRD line profile analysis confirmed the results of PAS with slightly higher values of dislocation densities in individual conditions. Detailed analysis of contrast factors allows to determine the type of dislocations and to draw conclusions about slip activation and its variations with strain. The influence of microstructure evolution on mechanical properties is discussed. Commercial MgAlZn alloy AZ31 was processed by hot extrusion and equal channel angular pressing (ECAP) known as EX-ECAP. Microstructure and defect structure evolution with strain due to ECAP were investigated by TEM, positron annihilation spectroscopy (PAS), and X-ray diffraction. Significant grain refinement was obtained by EX-ECAP. In the extruded condition relatively low density of dislocations was determined by PAS. Sharp increase of dislocation density occurred during the first two passes of ECAP, followed by the saturation and even a decline manifesting the dynamic recovery at higher strains. XRD line profile analysis confirmed the results of PAS with slightly higher values of dislocation densities in individual conditions. Detailed analysis of contrast factors allows to determine the type of dislocations and to draw conclusions about slip activation and its variations with strain. The influence of microstructure evolution on mechanical properties is discussed.
dcterms:title
Microstructure and dislocation density evolutions in MgAlZn alloy processed by severe plastic deformation Microstructure and dislocation density evolutions in MgAlZn alloy processed by severe plastic deformation
skos:prefLabel
Microstructure and dislocation density evolutions in MgAlZn alloy processed by severe plastic deformation Microstructure and dislocation density evolutions in MgAlZn alloy processed by severe plastic deformation
skos:notation
RIV/00216208:11320/12:10130254!RIV13-GA0-11320___
n9:predkladatel
n18:orjk%3A11320
n3:aktivita
n14:S n14:P
n3:aktivity
P(GA106/09/0482), P(GAP108/10/0648), S
n3:cisloPeriodika
22
n3:dodaniDat
n4:2013
n3:domaciTvurceVysledku
n7:5345553 n7:9739920 n7:9949097
n3:druhVysledku
n13:J
n3:duvernostUdaju
n19:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
150413
n3:idVysledku
RIV/00216208:11320/12:10130254
n3:jazykVysledku
n5:eng
n3:klicovaSlova
principles; diffraction; az31; ecap; fatigue properties; texture development; grain-refinement; mechanical-properties; mg alloy; magnesium alloy
n3:klicoveSlovo
n12:mechanical-properties n12:ecap n12:principles n12:fatigue%20properties n12:mg%20alloy n12:az31 n12:diffraction n12:texture%20development n12:grain-refinement n12:magnesium%20alloy
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[CC015B3A7C2C]
n3:nazevZdroje
Journal of Materials Science
n3:obor
n21:BM
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
4
n3:projekt
n16:GA106%2F09%2F0482 n16:GAP108%2F10%2F0648
n3:rokUplatneniVysledku
n4:2012
n3:svazekPeriodika
47
n3:tvurceVysledku
Vrátná, Jitka Čížek, Jakub Janeček, Miloš Gubicza, Jeno
n3:wos
000308362600022
s:issn
0022-2461
s:numberOfPages
10
n15:doi
10.1007/s10853-012-6538-4
n10:organizacniJednotka
11320