About: Microstructural analysis and mechanical properties of polycrystalline Ni-rich Ni3Al alloy prepared by directional solidification

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Microstructure and mechanical properties of polycrystalline Ni78Al22 alloy prepared by directional solidification (DS) at three growth rates of 18, 60 and 108 mm/h were studied. After DS the microstructure consisted of coarse columnar γ´(Ni3Al) grains which solidified directly from the melt, fine γ´ grains formed from primary γ-phase (Ni-based solid solution) and γ´ nano-particles formed in the γ channels surrounding fine and coarse γ´ grains. Volume fraction of the γ´-phase increased from 70 to 75 vol.% with decreasing growth rate from 108 to 18 mm/h. The highest room temperature tensile ductility was measured in the specimens with the highest volume fraction of the γ´-phase, which was prepared at the lowest growth rate of 18 mm/h. After fracture the proportion of the dislocation density in the gauge section to that in the heads was by an order of magnitude higher in the specimens showing the highest ductility than that in the specimens showing the lowest ducti Microstructure and mechanical properties of polycrystalline Ni78Al22 alloy prepared by directional solidification (DS) at three growth rates of 18, 60 and 108 mm/h were studied. After DS the microstructure consisted of coarse columnar γ´(Ni3Al) grains which solidified directly from the melt, fine γ´ grains formed from primary γ-phase (Ni-based solid solution) and γ´ nano-particles formed in the γ channels surrounding fine and coarse γ´ grains. Volume fraction of the γ´-phase increased from 70 to 75 vol.% with decreasing growth rate from 108 to 18 mm/h. The highest room temperature tensile ductility was measured in the specimens with the highest volume fraction of the γ´-phase, which was prepared at the lowest growth rate of 18 mm/h. After fracture the proportion of the dislocation density in the gauge section to that in the heads was by an order of magnitude higher in the specimens showing the highest ductility than that in the specimens showing the lowest ducti (en)
Title	Microstructural analysis and mechanical properties of polycrystalline Ni-rich Ni3Al alloy prepared by directional solidification Microstructural analysis and mechanical properties of polycrystalline Ni-rich Ni3Al alloy prepared by directional solidification (en)
skos:prefLabel	Microstructural analysis and mechanical properties of polycrystalline Ni-rich Ni3Al alloy prepared by directional solidification Microstructural analysis and mechanical properties of polycrystalline Ni-rich Ni3Al alloy prepared by directional solidification (en)
skos:notation	RIV/61989100:27360/08:00022088!RIV10-MSM-27360___
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM0021620834), Z(MSM6198910013)
http://linked.open...iv/cisloPeriodika	6
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Malcharcziková, Jitka Kursa, Miroslav Hyspecká, Ludmila Vodárek, Vlastimil
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola báňská - Technická univerzita Ostrava / Fakulta metalurgie a materiálového inženýrství
http://linked.open...dnocenehoVysledku	379331
http://linked.open...ai/riv/idVysledku	RIV/61989100:27360/08:00022088
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	nickel aluminides; Ni3Al; crystal growth; mechanical properties; microstructure (en)
http://linked.open.../riv/klicoveSlovo	Ni3Al crystal growth mechanical properties microstructure nickel aluminides
http://linked.open...odStatuVydavatele	SK - Slovenská republika
http://linked.open...ontrolniKodProRIV	[992AD4898B45]
http://linked.open...i/riv/nazevZdroje	Kovové materiály
http://linked.open...in/vavai/riv/obor	JG
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	46
http://linked.open...iv/tvurceVysledku	Kursa, Miroslav Malcharcziková, Jitka Vodárek, Vlastimil Hyspecká, Ludmila Pěšička, J.
http://linked.open...n/vavai/riv/zamer	Condensed Matter Physics – New Materials and Technologies Processes of preparation and properties of highly pure and structural defined special materials
issn	0023-432X
number of pages	9 (xsd:int)
http://localhost/t...ganizacniJednotka	27360
is http://linked.open...avai/riv/vysledek of	Microstructural analysis and mechanical properties of polycrystalline Ni-rich Ni3Al alloy prepared by directional solidification Microstructural analysis and mechanical properties of polycrystalline Ni-rich Ni3Al alloy prepared by directional solidification Microstructural analysis and mechanical properties of polycrystalline Ni-rich Ni3Al alloy prepared by directional solidification Microstructural analysis and mechanical properties of polycrystalline Ni-rich Ni3Al alloy prepared by directional solidification

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