"METAL 2010: 19TH INTERNATIONAL METALLURGICAL AND MATERIALS CONFERENCE" . "978-80-87294-17-8" . "RIV/68081723:_____/10:00440394" . . "METALLURGY AND PROPERTIES OF ADVANCED NiAl-Mo EUTECTICS" . . "METALLURGY AND PROPERTIES OF ADVANCED NiAl-Mo EUTECTICS"@en . . "000286658700154" . . . "RIV/68081723:_____/10:00440394!RIV15-GA0-68081723" . "Dlouh\u00FD, Anton\u00EDn" . . . "5"^^ . . . "Z\u00E1le\u017E\u00E1k, Tom\u00E1\u0161" . "METALLURGY AND PROPERTIES OF ADVANCED NiAl-Mo EUTECTICS" . "A NiAl-Mo eutectic alloy was melt from 99,99% purity components and cast by the drop casting technique. The drop-cast ternary alloy (nominal composition of Ni-45Al-9Mo at. %), was re-melted and directionally solidified using a high temperature optical floating zone furnace. A resulting in-situ composite consists of Ni-45,2Al matrix and Mo-10Al-4Ni fibers, all in at. %. The volume fraction of 14% Mo-fibers stems from the eutectic composition. Backscatter diffraction shows that the NiAl-matrix and the Mo-fibers are both < 001 >-oriented with respect to the axis of the cylindrical rods. Preliminary creep experiments confirmed an immense improvement of high temperature strength due to the fine distribution of Mo-fibres. The amount of strengthening in terms of minimum creep rate can be as high as 7 orders of magnitude. Post-mortem transmission electron microscopy experiments provided evidence that creep in the temperature range of 800 - 900 degrees C results in an extensive formation of subgrain boundaries. The strengthening effect is very likely associated with the reactions between subgrain boundaries and fine Mo-fibres."@en . . . . . . "Kucha\u0159ov\u00E1, Kv\u011Bta" . "270617" . "P(GA202/09/2073), Z(AV0Z20410507)" . "TANGER LTD" . "METALLURGY AND PROPERTIES OF ADVANCED NiAl-Mo EUTECTICS"@en . "eutectics; directional solidification; composite"@en . "[ED7A4ED2D72F]" . . . "Ro\u017Enov pod Radho\u0161t\u011Bm" . "A NiAl-Mo eutectic alloy was melt from 99,99% purity components and cast by the drop casting technique. The drop-cast ternary alloy (nominal composition of Ni-45Al-9Mo at. %), was re-melted and directionally solidified using a high temperature optical floating zone furnace. A resulting in-situ composite consists of Ni-45,2Al matrix and Mo-10Al-4Ni fibers, all in at. %. The volume fraction of 14% Mo-fibers stems from the eutectic composition. Backscatter diffraction shows that the NiAl-matrix and the Mo-fibers are both < 001 >-oriented with respect to the axis of the cylindrical rods. Preliminary creep experiments confirmed an immense improvement of high temperature strength due to the fine distribution of Mo-fibres. The amount of strengthening in terms of minimum creep rate can be as high as 7 orders of magnitude. Post-mortem transmission electron microscopy experiments provided evidence that creep in the temperature range of 800 - 900 degrees C results in an extensive formation of subgrain boundaries. The strengthening effect is very likely associated with the reactions between subgrain boundaries and fine Mo-fibres." . "Ostrava" . "2010-05-18+02:00"^^ . "4"^^ . . . . . . "4"^^ . "Bart\u00E1k, Tom\u00E1\u0161" .