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| rdf:type
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| Description
| - One of the methods used for preparation of materials with very fine structure is Equal-Channel Angular Pressing (ECAP) which is based on the severe plastic deformation. The material is pressed through a die and deformed by shear at the intersection of two internal channels of the same cross section. Aluminium alloys processed by this technique may reach the grain size of hundreds of nanometers. Compared to their coarse grained equivalents these materials exhibit enhanced properties e.g. yield strength, ultimate tensile strength or elongation to failure. The aim of this work was to describe structural development of alloys based on Al-Mg-Sc during the ECAP processing and following uniaxial tensile testing at various temperatures and strain rates. The attention was paid especially to the grain size and their orientation during heat treatment and/or plastic deformation, size and distribution of intermediary phases and also crystallography. The transmission electron microscopy was used. The results show that the most significant grain refinement is reached for the Al-Mg-Sc alloy after four passes of ECAP. Higher number of passes does not result in further refinement. Examination of the binary Al-Sc alloy proved the presence of Al3Sc phase in the structure and its dependence on the structural stability at increased temperatures. During tensile tests superplastic behaviour of Al-Mg-Sc was observed and the maximum achieved elongation was 1310% at 623 K and strain rate of 10-2 s-1.
- One of the methods used for preparation of materials with very fine structure is Equal-Channel Angular Pressing (ECAP) which is based on the severe plastic deformation. The material is pressed through a die and deformed by shear at the intersection of two internal channels of the same cross section. Aluminium alloys processed by this technique may reach the grain size of hundreds of nanometers. Compared to their coarse grained equivalents these materials exhibit enhanced properties e.g. yield strength, ultimate tensile strength or elongation to failure. The aim of this work was to describe structural development of alloys based on Al-Mg-Sc during the ECAP processing and following uniaxial tensile testing at various temperatures and strain rates. The attention was paid especially to the grain size and their orientation during heat treatment and/or plastic deformation, size and distribution of intermediary phases and also crystallography. The transmission electron microscopy was used. The results show that the most significant grain refinement is reached for the Al-Mg-Sc alloy after four passes of ECAP. Higher number of passes does not result in further refinement. Examination of the binary Al-Sc alloy proved the presence of Al3Sc phase in the structure and its dependence on the structural stability at increased temperatures. During tensile tests superplastic behaviour of Al-Mg-Sc was observed and the maximum achieved elongation was 1310% at 623 K and strain rate of 10-2 s-1. (en)
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| Title
| - Structure of ultrafine-grained aluminium alloys prepared by ECAP
- Structure of ultrafine-grained aluminium alloys prepared by ECAP (en)
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| skos:prefLabel
| - Structure of ultrafine-grained aluminium alloys prepared by ECAP
- Structure of ultrafine-grained aluminium alloys prepared by ECAP (en)
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| skos:notation
| - RIV/60461373:22310/11:43892565!RIV12-MSM-22310___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(KAN300100801), S, Z(MSM6046137302)
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/60461373:22310/11:43892565
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - grain refinement; , aluminium alloys; ECA (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - Conference proceedings, 20th International Conference on Metallurgy and Materials
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Jäger, Aleš
- Lejček, Pavel
- Dám, Karel
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| http://linked.open...n/vavai/riv/zamer
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
| |
| https://schema.org/isbn
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| http://localhost/t...ganizacniJednotka
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