About: Constitutive description of creep behavior of Mg–4Al

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Creep behavior of an advanced magnesium alloy AX41 (4 wt.% Al, 1 wt.% Ca, Mg balanced) was investigated in temperature interval from 343 to 673 K and stresses from 2 to 200 MPa. Compressive creep experiments with stepwise loading were used in order to obtain stress dependence of the creep rate. All stress dependences can be well described by the Garofalo sinh relationship with natural exponent n = 5. An analysis of the parameters of this relationship has shown that lattice diffusion controls creep at all experimental conditions. While climb-controlled creep mechanism is decisive at lower stresses and higher temperatures, glide-controlled mechanisms act at higher stresses and lower temperatures. A typical power-law breakdown is observed at intermediate stresses and temperatures. Creep behavior of an advanced magnesium alloy AX41 (4 wt.% Al, 1 wt.% Ca, Mg balanced) was investigated in temperature interval from 343 to 673 K and stresses from 2 to 200 MPa. Compressive creep experiments with stepwise loading were used in order to obtain stress dependence of the creep rate. All stress dependences can be well described by the Garofalo sinh relationship with natural exponent n = 5. An analysis of the parameters of this relationship has shown that lattice diffusion controls creep at all experimental conditions. While climb-controlled creep mechanism is decisive at lower stresses and higher temperatures, glide-controlled mechanisms act at higher stresses and lower temperatures. A typical power-law breakdown is observed at intermediate stresses and temperatures. (en) Creepové chování moderní hořčíkové slitiny AX41 bylo studováno v intervalu teplot 343 až 673 K a napětí 2 až 200 MPa. Tlakové creepové zkoušky se stupňovitým zatěžováním byly použity pro získání napěťové závislosti rychlosti creepu. Všechny napěťové závislosti mohou být popsány Garofalovým sinh vztahem s exponentem n=5. Analýza parametrů tohoto vztahu ukázala, že mřížková difúze kontroluje creep při všech experimentálních podmínkách. Zatímco creep kontrolovaný šplhem dislokací je rozhodujícím při nízkých napětích a vysokých teplotách, skluzem kontrolované mechanismy působí při vysokých napětích a nízkých teplotách. (cs)
Title	Constitutive description of creep behavior of Mg–4Al–1Ca alloy Constitutive description of creep behavior of Mg–4Al–1Ca alloy (en) Konstitutivní popis creepového chování slitiny Mg-4Al-1Ca (cs)
skos:prefLabel	Constitutive description of creep behavior of Mg–4Al–1Ca alloy Constitutive description of creep behavior of Mg–4Al–1Ca alloy (en) Konstitutivní popis creepového chování slitiny Mg-4Al-1Ca (cs)
skos:notation	RIV/68081723:_____/08:00310262!RIV09-AV0-68081723
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA106/06/1354), Z(AV0Z20410507)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2009
http://linked.open...aciTvurceVysledku	Dobeš, Ferdinand Milička, Karel
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	361068
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/08:00310262
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	magnesium alloys; constitutive equation of creep; creep mechanisms (en)
http://linked.open.../riv/klicoveSlovo	creep mechanisms constitutive equation of creep magnesium alloys
http://linked.open...odStatuVydavatele	UA - Ukrajina
http://linked.open...ontrolniKodProRIV	[51273FE97125]
http://linked.open...i/riv/nazevZdroje	Problemy pročnosti (Strength of Materials)
http://linked.open...in/vavai/riv/obor	JI
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Effect of reinforcement-matrix interface on the strength and thermal properties of Mg-Al-Ca alloy matrix composites
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	-
http://linked.open...iv/tvurceVysledku	Dobeš, Ferdinand Milička, Karel
http://linked.open...n/vavai/riv/zamer	Physical properties of advanced materials in relation to their microstructure and processing
issn	0556-171X
number of pages	4 (xsd:int)

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