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| rdf:type
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| Description
| - TiAl based alloys are very perspective material thanks to its outstanding properties, such as high specific strength, low density, high modulus of elasticity and resistance to creep. They might replace the currently used materials in many applications in aircraft and automotive industries, but also in other industries. The main reason why it happens only in very limited extent is their brittleness and complicated production of these alloys. Fabrication of TiAl alloys is difficult, because titanium and aluminium are reactive materials. That’s why these alloys are usually prepared in an inert atmosphere. One of possibilities of enhancement of problematic properties of these alloys is influencing their micro-structure by alloying by elements, which influence grain size and reduce dispersion of precipitates (e.g. B, C, Si). Yttrium is one of the elements, which similarly influence micro-structure and properties of TiAl alloys. According to the work [1] it is possible by addition of yttrium up to 0.5 at.% to increase ductility, plasticity, formability at high temperatures and resistance to oxidation.TiAl alloys with nominal composition of Ti-47Al atomic percent (at.%) and with various additions of yttrium 0.1, 0.2, 0.3 and 0.4 (at.%) were prepared by different methods, namely by plasma melting and by vacuum induction melting. The applied procedures of preparation of alloys lead to creation of two different types of micro-structures. The samples were used for metallographic observation and for measurement of micro-hardness.
- TiAl based alloys are very perspective material thanks to its outstanding properties, such as high specific strength, low density, high modulus of elasticity and resistance to creep. They might replace the currently used materials in many applications in aircraft and automotive industries, but also in other industries. The main reason why it happens only in very limited extent is their brittleness and complicated production of these alloys. Fabrication of TiAl alloys is difficult, because titanium and aluminium are reactive materials. That’s why these alloys are usually prepared in an inert atmosphere. One of possibilities of enhancement of problematic properties of these alloys is influencing their micro-structure by alloying by elements, which influence grain size and reduce dispersion of precipitates (e.g. B, C, Si). Yttrium is one of the elements, which similarly influence micro-structure and properties of TiAl alloys. According to the work [1] it is possible by addition of yttrium up to 0.5 at.% to increase ductility, plasticity, formability at high temperatures and resistance to oxidation.TiAl alloys with nominal composition of Ti-47Al atomic percent (at.%) and with various additions of yttrium 0.1, 0.2, 0.3 and 0.4 (at.%) were prepared by different methods, namely by plasma melting and by vacuum induction melting. The applied procedures of preparation of alloys lead to creation of two different types of micro-structures. The samples were used for metallographic observation and for measurement of micro-hardness. (en)
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| Title
| - Effect of yttrium addition on microstructure of alloy Ti-47Al, prepared by plasma melting and vacuum induction melting
- Effect of yttrium addition on microstructure of alloy Ti-47Al, prepared by plasma melting and vacuum induction melting (en)
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| skos:prefLabel
| - Effect of yttrium addition on microstructure of alloy Ti-47Al, prepared by plasma melting and vacuum induction melting
- Effect of yttrium addition on microstructure of alloy Ti-47Al, prepared by plasma melting and vacuum induction melting (en)
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| skos:notation
| - RIV/61989100:27360/11:86080870!RIV12-MSM-27360___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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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/61989100:27360/11:86080870
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - micro-hardness; porosity; yttrium; micro-structure; TiAl alloys (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
| - 20th Anniversary International Conference on Metallurgy and Materials: METAL 2011
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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
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Kursa, Miroslav
- Čegan, Tomáš
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
| |
| number of pages
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| http://purl.org/ne...btex#hasPublisher
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| https://schema.org/isbn
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| http://localhost/t...ganizacniJednotka
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