About: Enhanced creep properties of copper and its alloys processed by ECAP

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

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This work describes the effect of ECAP technique on the microstructure and creep properties of pure Cu and its alloys with addition of Zr or Co. The ECAP pressing was performed at room temperature by route Bc up to 12 passes. Ultrafine-grained (UFG) microstructure has been studied by methods of TEM and SEM-EBSD. Tensile creep tests were conducted at temperature 673 K and at different applied stresses on ECAP material and, for comparison purposes, on unpressed coarse-grained (CG) states. It was found that both alloys processed by ECAP exhibited similar character of creep behaviour. Creep resistance was markedly improved after first two ECAP passes in comparison with its unpressed state. The minimum creep rate of ECAP material may be up to two orders of magnitude lower than that of CG material. However, subsequent ECAP passes lead to a decline of creep life and the difference in the minimum creep rate for the ECAP material and CG state consistently decreases with increasing number of ECAP passes. Further, ECAP process led to significant improvements in fracture strain. The link between microstructural processes and creep behaviour of pressed Cu and its selected alloys is examined in detail. This work describes the effect of ECAP technique on the microstructure and creep properties of pure Cu and its alloys with addition of Zr or Co. The ECAP pressing was performed at room temperature by route Bc up to 12 passes. Ultrafine-grained (UFG) microstructure has been studied by methods of TEM and SEM-EBSD. Tensile creep tests were conducted at temperature 673 K and at different applied stresses on ECAP material and, for comparison purposes, on unpressed coarse-grained (CG) states. It was found that both alloys processed by ECAP exhibited similar character of creep behaviour. Creep resistance was markedly improved after first two ECAP passes in comparison with its unpressed state. The minimum creep rate of ECAP material may be up to two orders of magnitude lower than that of CG material. However, subsequent ECAP passes lead to a decline of creep life and the difference in the minimum creep rate for the ECAP material and CG state consistently decreases with increasing number of ECAP passes. Further, ECAP process led to significant improvements in fracture strain. The link between microstructural processes and creep behaviour of pressed Cu and its selected alloys is examined in detail. (en)
Title	Enhanced creep properties of copper and its alloys processed by ECAP Enhanced creep properties of copper and its alloys processed by ECAP (en)
skos:prefLabel	Enhanced creep properties of copper and its alloys processed by ECAP Enhanced creep properties of copper and its alloys processed by ECAP (en)
skos:notation	RIV/68081723:_____/14:00435683!RIV15-GA0-68081723
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(ED1.1.00/02.0068), P(GAP108/11/2260)
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Kvapilová, Marie Svoboda, Milan Sklenička, Václav Dvořák, Jiří Král, Petr
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
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	14663
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/14:00435683
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Copper alloys; Creep; Microstructure; UFG materials (en)
http://linked.open.../riv/klicoveSlovo	UFG materials Creep Copper alloys Microstructure
http://linked.open...ontrolniKodProRIV	[F38B81BB6F56]
http://linked.open...v/mistoKonaniAkce	Metz
http://linked.open...i/riv/mistoVydani	Bristol
http://linked.open...i/riv/nazevZdroje	NANOSPD 6
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	Central european institute of technology The link between microstructure and creep behaviour of precipitate strengthened alloys processed by ECAP
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Dvořák, Jiří Král, Petr Kvapilová, Marie Sklenička, Václav Svoboda, Milan
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open...ain/vavai/riv/wos	000347246200142
http://linked.open.../riv/zahajeniAkce	2014-06-30 (xsd:date)
issn	1757-8981
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.1088/1757-899X/63/1/012141
http://purl.org/ne...btex#hasPublisher	IOP Publishing Ltd

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