About: High Temperature Deformation of an ECAP Al.Mn Based Alloy

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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)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://www.metal2013.com/files/proceedings/02/reports/172.pdf
Description	The equal-channel angular pressing (ECAP) is one of the most efficient methods of grain refinement. The fine grain size can enhance the plasticity of materials at high temperatures and many ECAP alloys exhibit even superplastic behaviour in the case that the fine-grained structure remains stable at high temperatures. An Al-Mn-based alloy modified by the addition of Sc and Zr was produced using ECAP. The microstructure investigation using TEM and EBSD methods revealed a mixture of well defined grains with the submicrometer size, and severely deformed regions in the as-prepared state. Annealing at elevated temperatures resulted in a recovery of the severely deformed microstructure. The submicrocrystalline microstructure is retained after annealing up to 400 °C, a slight grain growth is observed at higher temperatures. A relatively large fraction of low-angle boundaries is typical for the investigated material even after annealing at the highest temperatures. Special tensile tests performed at temperatures above 400 °C revealed the maximum values of the strain rate sensitivity parameter m > 0.3 at strain rates of the order of 10-2s-1. The maximum ductility of 350 % was found at 500 °C. This behaviour can be interpreted as the high strain rate superplasticity. The equal-channel angular pressing (ECAP) is one of the most efficient methods of grain refinement. The fine grain size can enhance the plasticity of materials at high temperatures and many ECAP alloys exhibit even superplastic behaviour in the case that the fine-grained structure remains stable at high temperatures. An Al-Mn-based alloy modified by the addition of Sc and Zr was produced using ECAP. The microstructure investigation using TEM and EBSD methods revealed a mixture of well defined grains with the submicrometer size, and severely deformed regions in the as-prepared state. Annealing at elevated temperatures resulted in a recovery of the severely deformed microstructure. The submicrocrystalline microstructure is retained after annealing up to 400 °C, a slight grain growth is observed at higher temperatures. A relatively large fraction of low-angle boundaries is typical for the investigated material even after annealing at the highest temperatures. Special tensile tests performed at temperatures above 400 °C revealed the maximum values of the strain rate sensitivity parameter m > 0.3 at strain rates of the order of 10-2s-1. The maximum ductility of 350 % was found at 500 °C. This behaviour can be interpreted as the high strain rate superplasticity. (en)
Title	High Temperature Deformation of an ECAP Al.Mn Based Alloy High Temperature Deformation of an ECAP Al.Mn Based Alloy (en)
skos:prefLabel	High Temperature Deformation of an ECAP Al.Mn Based Alloy High Temperature Deformation of an ECAP Al.Mn Based Alloy (en)
skos:notation	RIV/26316919:_____/12:#0000322!RIV13-MPO-26316919
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(FR-TI1/473)
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Sláma, Peter
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	COMTES FHT a.s.
http://linked.open...dnocenehoVysledku	138974
http://linked.open...ai/riv/idVysledku	RIV/26316919:_____/12:#0000322
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Al-Mn-based alloy, ECAP, microstructure, strength, superplasticity (en)
http://linked.open.../riv/klicoveSlovo	strength superplasticity microstructure Al-Mn-based alloy ECAP
http://linked.open...ontrolniKodProRIV	[0925979B7912]
http://linked.open...v/mistoKonaniAkce	Brno
http://linked.open...i/riv/mistoVydani	Ostrava, CZ
http://linked.open...i/riv/nazevZdroje	METAL 2012
http://linked.open...in/vavai/riv/obor	JG
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	*Industrial research and development of technology of production of the bars made from and copper alloys
http://linked.open...UplatneniVysledku	2012
http://linked.open...iv/tvurceVysledku	Sláma, Peter
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2012-05-23 (xsd:date)
number of pages	6 (xsd:int)
http://purl.org/ne...btex#hasPublisher	TANGER, Ltd.
https://schema.org/isbn	978-80-87294-31-4

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