About: Creep processes in pure aluminium processed by equal-channel angular pressing

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	It is suggested that creep of pure aluminium processed by equal-channel angular pressing (ECAP) occurs by diffusion-controlled movement of intragranular dislocations and by grain boundary sliding. The contribution of grain boundary sliding is increasingly higher with increasing number of ECAP passes. The coexistence of a dislocation process and grain boundary sliding may explain the observed decrease of the creep resistance with increasing number of ECAP passes. This is because high-angle boundaries are necessary in order to achieve grain boundary sliding. Therefore, an increase in the fraction of high-angle boundaries with increasing number of ECAP passes will essentially lead to increasing contribution of grain boundary sliding to the total creep strain, as it was observed experimentally. It is suggested that creep of pure aluminium processed by equal-channel angular pressing (ECAP) occurs by diffusion-controlled movement of intragranular dislocations and by grain boundary sliding. The contribution of grain boundary sliding is increasingly higher with increasing number of ECAP passes. The coexistence of a dislocation process and grain boundary sliding may explain the observed decrease of the creep resistance with increasing number of ECAP passes. This is because high-angle boundaries are necessary in order to achieve grain boundary sliding. Therefore, an increase in the fraction of high-angle boundaries with increasing number of ECAP passes will essentially lead to increasing contribution of grain boundary sliding to the total creep strain, as it was observed experimentally. (en) Lze předpokládat, že creep čistého hliníku tvářeného metodou ECAP je řízen difúzí kontrolovaného pohybu mobilních dislokací uvnitř zrn a pokluzy po hranicích zrn. Příspěvek pokluzů po hranicích zrn je mírně stoupající v závislosti se zvyšujícím se počtem ECAP průchodů. Koexistencí dislokačního procesu a pokluzů po hranicích zrn můžeme vysvětlit pokles creepové odolnosti se vzrůstajícím počtem ECAP průchodů.Je to způsobeno přítomností vysokoúhlových hranic, které umožňují aktivitu pokluzů po hranicích zrn. (cs)
Title	Creep processes in pure aluminium processed by equal-channel angular pressing Creep processes in pure aluminium processed by equal-channel angular pressing (en) Creepové procesy v čistém hliníku připraveném ECAP technikou (cs)
skos:prefLabel	Creep processes in pure aluminium processed by equal-channel angular pressing Creep processes in pure aluminium processed by equal-channel angular pressing (en) Creepové procesy v čistém hliníku připraveném ECAP technikou (cs)
skos:notation	RIV/68081723:_____/05:00025165!RIV06-AV0-68081723
http://linked.open.../vavai/riv/strany	408;412
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA2041301), Z(AV0Z2041904)
http://linked.open...iv/cisloPeriodika	-
http://linked.open...vai/riv/dodaniDat	2006
http://linked.open...aciTvurceVysledku	Stonawská, Zuzana Svoboda, Milan Sklenička, Václav Dvořák, Jiří Král, Petr
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	Ústav fyziky materiálů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	516530
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/05:00025165
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Equal-channel angular pressing (ECAP); Aluminium; Ultrafine grained material; Creep (en)
http://linked.open.../riv/klicoveSlovo	Equal-channel angular pressing (ECAP) Creep Ultrafine grained material Aluminium
http://linked.open...odStatuVydavatele	CH - Švýcarská konfederace
http://linked.open...ontrolniKodProRIV	[9927DA9F7345]
http://linked.open...i/riv/nazevZdroje	Material Science and Engineering A: Structural materials
http://linked.open...in/vavai/riv/obor	JJ
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Creep processes in ultrafine-grained metals and alloys processed by the ECAP
http://linked.open...UplatneniVysledku	2005
http://linked.open...v/svazekPeriodika	410-411
http://linked.open...iv/tvurceVysledku	Dvořák, Jiří Král, Petr Sklenička, Václav Svoboda, Milan Stonawská, Zuzana
http://linked.open...n/vavai/riv/zamer	Behavior and properties of metallic and non-metallic materials in relation to their structure, research on processes leading to degradation of material quality
issn	0921-5093
number of pages	5 (xsd:int)

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