About: Microstructure and high temperature deformation of an ultra-fine grained ECAP AA7075 aluminium alloy

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About: Microstructure and high temperature deformation of an ultra-fine grained ECAP AA7075 aluminium alloy 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/10.3139/146.110833
Description	An AA 7075 aluminium alloy with an ultra-fine grained structure was prepared through equal channel angular pressing (ECAP) at pressing temperatures T-ECAP of 120, 170, and 220 degrees C. A decrease in T-ECAP from 220 to 120 degrees C was found to lead to a more pronounced refinement of the microstructure and to worse stability of the microstructure -the onset of grain coarsening was displaced to lower temperatures. The material pressed with the highest T-ECAP exhibited superplastic behaviour at temperatures close to 400 C and grain boundary sliding was identified as the dominant operating deformation mechanism. The materials prepared with both of the lower T-ECAP exhibited only enhanced ductility of about 200%, however this behaviour was observed at temperatures as low as 200 degrees C. It was found that this %22low temperature superplasticity%22 resulted from a combined operation of grain boundary sliding at selected grain boundaries and glide of lattice dislocations. An AA 7075 aluminium alloy with an ultra-fine grained structure was prepared through equal channel angular pressing (ECAP) at pressing temperatures T-ECAP of 120, 170, and 220 degrees C. A decrease in T-ECAP from 220 to 120 degrees C was found to lead to a more pronounced refinement of the microstructure and to worse stability of the microstructure -the onset of grain coarsening was displaced to lower temperatures. The material pressed with the highest T-ECAP exhibited superplastic behaviour at temperatures close to 400 C and grain boundary sliding was identified as the dominant operating deformation mechanism. The materials prepared with both of the lower T-ECAP exhibited only enhanced ductility of about 200%, however this behaviour was observed at temperatures as low as 200 degrees C. It was found that this %22low temperature superplasticity%22 resulted from a combined operation of grain boundary sliding at selected grain boundaries and glide of lattice dislocations. (en)
Title	Microstructure and high temperature deformation of an ultra-fine grained ECAP AA7075 aluminium alloy Microstructure and high temperature deformation of an ultra-fine grained ECAP AA7075 aluminium alloy (en)
skos:prefLabel	Microstructure and high temperature deformation of an ultra-fine grained ECAP AA7075 aluminium alloy Microstructure and high temperature deformation of an ultra-fine grained ECAP AA7075 aluminium alloy (en)
skos:notation	RIV/00216208:11320/13:10193130!RIV14-GA0-11320___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA106/07/0303), Z(MSM0021620834)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Turba, Kryštof Harcuba, Petr Cieslar, Miroslav Málek, Přemysl
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	88239
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/13:10193130
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Deformation mechanism; Superplasticity; Microstructure; ECAP; Aluminium alloy (en)
http://linked.open.../riv/klicoveSlovo	Aluminium alloy Deformation mechanism ECAP Microstructure Superplasticity
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[455F6167FBD5]
http://linked.open...i/riv/nazevZdroje	International Journal of Materials Research
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	The role of grain boundaries in high-temperature plastic deformation of fine-grained materials
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	104
http://linked.open...iv/tvurceVysledku	Cieslar, Miroslav Harcuba, Petr Málek, Přemysl Turba, Kryštof
http://linked.open...ain/vavai/riv/wos	000313923600001
http://linked.open...n/vavai/riv/zamer	Condensed Matter Physics – New Materials and Technologies
issn	1862-5282
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.3139/146.110833
http://localhost/t...ganizacniJednotka	11320

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