About: Flow mechanisms in creep of a short-fibre AZ91 alloy-based composite

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	A comparison between the creep characteristics of an AZ91 magnesium alloy reinforced with 20 vol.% Al2O3 short fibres and an unreinforced AZ91 matrix alloy shows that the creep resistance of the reinforced material is considerably improved compared to the matrix alloy. It is suggested that the creep strengthening in the composite arises mainly from the existence of a threshold stress and the load transfer effect. The values of the threshold stress in the creep of the composite at temperatures in the range from 373 to 673 K were estimated using standard methods. It is proposed that the threshold stress arises from an attractive interaction between mobile dislocations and Mg17(Al, Zn)12 precipitates. A comparison between the creep characteristics of an AZ91 magnesium alloy reinforced with 20 vol.% Al2O3 short fibres and an unreinforced AZ91 matrix alloy shows that the creep resistance of the reinforced material is considerably improved compared to the matrix alloy. It is suggested that the creep strengthening in the composite arises mainly from the existence of a threshold stress and the load transfer effect. The values of the threshold stress in the creep of the composite at temperatures in the range from 373 to 673 K were estimated using standard methods. It is proposed that the threshold stress arises from an attractive interaction between mobile dislocations and Mg17(Al, Zn)12 precipitates. (en) Porovnání creepových charakteristik hořčíkové slitiny AZ91 zpevněné 20 obj. % Al2O3 s matriční slitinou AZ91 ukazuje zvýšenou creepovou odolnost zpevněné slitiny. Předpokládá se, že vyšší creepová odolnost kompozitu je výsledkem existence prahového napětí a účinku přenosu zatížení. Hodnota prahového napětí při creepu kompozitu v teplotní oblasti 373 – 673 K byla určena standardními metodami. Prahové napětí vzniká z interakce mezi pohyblivými dislokacemi a precipitáty Mg17(Al,Zn)12. (cs)
Title	Flow mechanisms in creep of a short-fibre AZ91 alloy-based composite Deformační mechanismy při creepu kompozitní slitiny AZ91 zpevněné krátkými vlákny (cs) Flow mechanisms in creep of a short-fibre AZ91 alloy-based composite (en)
skos:prefLabel	Flow mechanisms in creep of a short-fibre AZ91 alloy-based composite Deformační mechanismy při creepu kompozitní slitiny AZ91 zpevněné krátkými vlákny (cs) Flow mechanisms in creep of a short-fibre AZ91 alloy-based composite (en)
skos:notation	RIV/68081723:_____/05:00024700!RIV06-AV0-68081723
http://linked.open.../vavai/riv/strany	34;44
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA106/03/0901), Z(AV0Z20410507)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2006
http://linked.open...aciTvurceVysledku	Pahutová, Marie Svoboda, Milan Kuchařová, Květa Sklenička, Václav
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	521828
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/05:00024700
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	AZ91 magnesium alloy; metal matrix composite; short fibre reinforcement (en)
http://linked.open.../riv/klicoveSlovo	AZ91 magnesium alloy metal matrix composite short fibre reinforcement
http://linked.open...odStatuVydavatele	SK - Slovenská republika
http://linked.open...ontrolniKodProRIV	[4A21FDFD37A1]
http://linked.open...i/riv/nazevZdroje	Kovové materiály
http://linked.open...in/vavai/riv/obor	JG
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	The role of reinforcemens in magnesium composites
http://linked.open...UplatneniVysledku	2005
http://linked.open...v/svazekPeriodika	43 2005
http://linked.open...iv/tvurceVysledku	Kuchařová, Květa Langdon, T. G. Sklenička, Václav Svoboda, Milan Pahutová, Marie
http://linked.open...n/vavai/riv/zamer	Physical properties of advanced materials in relation to their microstructure and processing
issn	0023-432X
number of pages	11 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Flow mechanisms in creep of a short-fibre AZ91 alloy-based composite

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