| Attributes | Values |
|---|
| rdf:type
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| Description
| - Low density and comparatively favourite price of the Fe - 40 at. % Al type intermetallic compounds predestine them for various technical applications, but their promising potential is used only in a limited way as yet, mainly due to their high brittleness. Conventional techniques of processing of the coarse-grained structure by hot forming, which are accompanied by the repeated recrystallization and progressive grain refining, are feasible only with great difficulty in the case of this material. With regard to attraction of the given type material, the plastometric research at temperatures 800 °C to 1200 °C was carried out as a basic one, namely using the compression tests on plastometer Gleeble at strain rates 0.05 s-1 to 30 s-1. Cylindrical specimens with diameter 10 mm and height 12 mm were manufactured with great difficulty from laboratory castings of the cross section ca 20 x 33 mm, gained by means of the vacuum induction furnace. The very coarse-grained material contained 25.1 wt. % Al and 0.013 % wt. C. From the obtained stress-strain curves the values of peak stress were determined, which were used for determination of the values of activation energy in hot forming according to the classical equation of the hyperbolic sine type. Enumeration of its coefficients led at the same time to a chance to predict maximum deformation resistance characteristics of the investigated alloy in dependence on temperature and strain rate.
- Low density and comparatively favourite price of the Fe - 40 at. % Al type intermetallic compounds predestine them for various technical applications, but their promising potential is used only in a limited way as yet, mainly due to their high brittleness. Conventional techniques of processing of the coarse-grained structure by hot forming, which are accompanied by the repeated recrystallization and progressive grain refining, are feasible only with great difficulty in the case of this material. With regard to attraction of the given type material, the plastometric research at temperatures 800 °C to 1200 °C was carried out as a basic one, namely using the compression tests on plastometer Gleeble at strain rates 0.05 s-1 to 30 s-1. Cylindrical specimens with diameter 10 mm and height 12 mm were manufactured with great difficulty from laboratory castings of the cross section ca 20 x 33 mm, gained by means of the vacuum induction furnace. The very coarse-grained material contained 25.1 wt. % Al and 0.013 % wt. C. From the obtained stress-strain curves the values of peak stress were determined, which were used for determination of the values of activation energy in hot forming according to the classical equation of the hyperbolic sine type. Enumeration of its coefficients led at the same time to a chance to predict maximum deformation resistance characteristics of the investigated alloy in dependence on temperature and strain rate. (en)
|
| Title
| - Determination of activation energy in hot forming of alloy Fe-40Al type
- Determination of activation energy in hot forming of alloy Fe-40Al type (en)
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| skos:prefLabel
| - Determination of activation energy in hot forming of alloy Fe-40Al type
- Determination of activation energy in hot forming of alloy Fe-40Al type (en)
|
| skos:notation
| - RIV/61989100:27360/11:86081400!RIV12-GA0-27360___
|
| http://linked.open...avai/riv/aktivita
| |
| http://linked.open...avai/riv/aktivity
| - P(ED0040/01/01), P(GAP107/10/0438), Z(MSM6198910015)
|
| http://linked.open...vai/riv/dodaniDat
| |
| http://linked.open...aciTvurceVysledku
| |
| http://linked.open.../riv/druhVysledku
| |
| http://linked.open...iv/duvernostUdaju
| |
| http://linked.open...titaPredkladatele
| |
| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/61989100:27360/11:86081400
|
| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - deformation resistance; activation energy; stress-strain curves; hot compression; iron aluminides (en)
|
| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...ontrolniKodProRIV
| |
| http://linked.open...v/mistoKonaniAkce
| |
| http://linked.open...i/riv/mistoVydani
| |
| http://linked.open...i/riv/nazevZdroje
| - 20th Anniversary International Conference on Metallurgy and Materials: METAL 2011
|
| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...iv/tvurceVysledku
| - Cagala, Michal
- Kulveitová, Hana
- Schindler, Ivo
- Knapiński, Marcin
- Šumšal, Václav
|
| http://linked.open...vavai/riv/typAkce
| |
| http://linked.open.../riv/zahajeniAkce
| |
| http://linked.open...n/vavai/riv/zamer
| |
| number of pages
| |
| http://purl.org/ne...btex#hasPublisher
| |
| https://schema.org/isbn
| |
| http://localhost/t...ganizacniJednotka
| |
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