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Statements

Subject Item
n2:RIV%2F00216208%3A11320%2F09%3A00206970%21RIV10-GA0-11320___
rdf:type
n18:Vysledek skos:Concept
dcterms:description
An AA 7075 aluminum alloy with Zr and Sc additions was subjected to 6-8 ECAP passes at 120, 170, and 220 °C in order to examine the effect of the pressing conditions on the microstructural characteristics and the consequences for high-temperature mechanical properties. Using the method of EBSD, a decrease in pressing temperature was found to lead to a more pronounced refinement of the microstructure and a higher fraction of high-angle grain boundaries, but at the same time compromised the ability of the Al3 (Zr, Sc) phase to stabilize the ultra-fine-grained microstructure at elevated temperatures. Optimum superplastic properties were therefore achieved after pressing at the intermediate temperature of 170 °C. The material exhibited high strain-rate superplasticity with a ductility of 650 % at an initial strain rate of 1 x 10-1 s-1. An AA 7075 aluminum alloy with Zr and Sc additions was subjected to 6-8 ECAP passes at 120, 170, and 220 °C in order to examine the effect of the pressing conditions on the microstructural characteristics and the consequences for high-temperature mechanical properties. Using the method of EBSD, a decrease in pressing temperature was found to lead to a more pronounced refinement of the microstructure and a higher fraction of high-angle grain boundaries, but at the same time compromised the ability of the Al3 (Zr, Sc) phase to stabilize the ultra-fine-grained microstructure at elevated temperatures. Optimum superplastic properties were therefore achieved after pressing at the intermediate temperature of 170 °C. The material exhibited high strain-rate superplasticity with a ductility of 650 % at an initial strain rate of 1 x 10-1 s-1.
dcterms:title
The optimization of ECAP conditions to achieve high strain-rate superplasticity in a Zr- and Sc-modified AA 7075 aluminum alloy The optimization of ECAP conditions to achieve high strain-rate superplasticity in a Zr- and Sc-modified AA 7075 aluminum alloy
skos:prefLabel
The optimization of ECAP conditions to achieve high strain-rate superplasticity in a Zr- and Sc-modified AA 7075 aluminum alloy The optimization of ECAP conditions to achieve high strain-rate superplasticity in a Zr- and Sc-modified AA 7075 aluminum alloy
skos:notation
RIV/00216208:11320/09:00206970!RIV10-GA0-11320___
n3:aktivita
n14:P n14:Z
n3:aktivity
P(GA106/07/0303), Z(MSM0021620834)
n3:cisloPeriodika
6
n3:dodaniDat
n12:2010
n3:domaciTvurceVysledku
n5:4103017 n5:9857915 n5:1309315
n3:druhVysledku
n15:J
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
332009
n3:idVysledku
RIV/00216208:11320/09:00206970
n3:jazykVysledku
n7:eng
n3:klicovaSlova
optimization; conditions; achieve; strain-rate; superplasticity; Sc-modified; aluminum; alloy
n3:klicoveSlovo
n9:optimization n9:aluminum n9:Sc-modified n9:strain-rate n9:superplasticity n9:alloy n9:conditions n9:achieve
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[C64DBCDB6D86]
n3:nazevZdroje
International Journal of Materials Research
n3:obor
n8:BM
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
5
n3:projekt
n10:GA106%2F07%2F0303
n3:rokUplatneniVysledku
n12:2009
n3:svazekPeriodika
100
n3:tvurceVysledku
Málek, Přemysl Turba, Kryštof Rauch, E. F. Cieslar, Miroslav Robaut, F.
n3:wos
000267933300024
n3:zamer
n13:MSM0021620834
s:issn
1862-5282
s:numberOfPages
7
n17:organizacniJednotka
11320