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

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  • 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
http://linked.open...avai/riv/aktivity
  • Z(MSM0021620834), Z(MSM6198910013)
http://linked.open...iv/cisloPeriodika
  • 6
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
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  • 379331
http://linked.open...ai/riv/idVysledku
  • RIV/61989100:27360/08:00022088
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • nickel aluminides; Ni3Al; crystal growth; mechanical properties; microstructure (en)
http://linked.open.../riv/klicoveSlovo
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
http://linked.open...ichTvurcuVysledku
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http://linked.open...UplatneniVysledku
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
issn
  • 0023-432X
number of pages
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  • 27360
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