About: Microstructure and dislocation density evolutions in MgAlZn alloy processed by severe plastic deformation

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About: Microstructure and dislocation density evolutions in MgAlZn alloy processed by severe plastic deformation Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1007/s10853-012-6538-4
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. (en)
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 (en)
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 (en)
skos:notation	RIV/00216208:11320/12:10130254!RIV13-GA0-11320___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(GA106/09/0482), P(GAP108/10/0648), S
http://linked.open...iv/cisloPeriodika	22
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Janeček, Miloš Čížek, Jakub Vrátná, Jitka
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	150413
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/12:10130254
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	principles; diffraction; az31; ecap; fatigue properties; texture development; grain-refinement; mechanical-properties; mg alloy; magnesium alloy (en)
http://linked.open.../riv/klicoveSlovo	mechanical-properties ecap magnesium alloy principles az31 grain-refinement mg alloy texture development fatigue properties diffraction
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[CC015B3A7C2C]
http://linked.open...i/riv/nazevZdroje	Journal of Materials Science
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Mechanical properties and microstructure development of ultrafine-grained magnesium alloys prepared by various processing routes Investigation of defects in icosahedral phases in Mg-alloys
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	47
http://linked.open...iv/tvurceVysledku	Janeček, Miloš Čížek, Jakub Vrátná, Jitka Gubicza, Jeno
http://linked.open...ain/vavai/riv/wos	000308362600022
issn	0022-2461
number of pages	10 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s10853-012-6538-4
http://localhost/t...ganizacniJednotka	11320

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