. . "Creep a mikrostruktura t\u00E9m\u011B\u0159 stechiometrick\u00FDch slitin TiAl"@cs . . "Creep and microstructure of near-gamma TiAl alloys"@en . "2"^^ . . . "RIV/68081723:_____/04:00108281" . "RIV/68081723:_____/04:00108281!RIV/2005/MSM/A07005/N" . "12" . "0966-9795" . . "Creep and microstructure of near-gamma TiAl alloys" . "Dlouh\u00FD, Anton\u00EDn" . . "[C584A3398114]" . "Creep and microstructure of near-gamma TiAl alloys"@en . "Kucha\u0159ov\u00E1, Kv\u011Bta" . . "Creep strength and microstructure of Ti-48Al-2Cr-2Nb-1B and Ti-46Al-2W-0.5Si-(0.7B) alloys are compared. The influence of a prior-to-creep heat treatment on the initial microstructure is investigated. The isothermally forged and heat treated Ti-48Al-2Cr-2Nb-1B alloy was tested in nearly lamellar and equiaxed modifications while the cast and HIP-ped Ti-46Al-2W-0.5Si alloy was either nearly lamellar or duplex before creep. All these microstructural variants were crept in tension at 1023 K and at different applied stresses. Experimental results obtained in the present study suggest that, in spite of creep strength variations resulting from the different microstructural states, the Ti-46Al-2W-0.5Si alloy performs better than the Ti-48Al-2Cr-2Nb-1B alloy. Transmission electron microscopy analysis provided evidence that W- and Si-rich phases that precipitate both, on the lamellar boundaries and inside the gamma grains, contribute to the superior creep strength of the Ti-46Al-2W-0.5Si alloy" . . . "558974" . "Creep and microstructure of near-gamma TiAl alloys" . . "Creep a mikrostruktura t\u00E9m\u011B\u0159 stechiometrick\u00FDch slitin TiAl"@cs . . "Intermetallics" . "Pr\u00E1ce porovn\u00E1v\u00E1 creepovou pevnost a mikrostrukturu slitin Ti-48Al-2Cr-2Nb-1B a Ti-46Al-2W-0.5Si-(0.7B). Je analyzov\u00E1n vliv tepeln\u00E9ho zpracov\u00E1n\u00ED p\u0159ed creepem na v\u00FDchoz\u00ED mikrostrukturu. Kovan\u00E1 a n\u00E1sledn\u011B tepeln\u011B zpracovan\u00E1 slitina Ti-48Al-2Cr-2Nb-1B byla testov\u00E1na ve dvou mikrostrukturn\u00EDch modifikac\u00EDch, a to jako rovnoos\u00E1 zrna a pln\u011B lamel\u00E1rn\u00ED zrna. Slitina Ti-46Al-2W-0.5Si m\u011Bla p\u0159ed creepem duplexn\u00ED mikrostrukturu. V\u0161echny tyto mikrostrukturn\u00ED varianty byly podrobeny creepu v tahu p\u0159i 1023 K a r\u016Fzn\u00FDch hladin\u00E1ch aplikovan\u00E9ho nap\u011Bt\u00ED. V\u00FDsledky experiment\u016F prok\u00E1zaly, \u017Ee nehled\u011B ke zm\u011Bn\u00E1m pevnosti souvisej\u00EDc\u00EDm s mikrostrukturn\u00EDm stavem, slitina Ti-46Al-2W-0.5Si vykazuje vy\u0161\u0161\u00ED creepovou pevnost ve srovn\u00E1n\u00ED se slitinou Ti-48Al-2Cr-2Nb-1B. Transmisn\u00ED elektronov\u00E1 mikroskopie p\u0159isp\u011Bla k objasn\u011Bn\u00ED uveden\u00FDch efekt\u016F. F\u00E1ze bohat\u00E9 na W a Si stabilizuj\u00ED lamel\u00E1rn\u00ED mikrostrukturu slitiny Ti-46Al-2W-0.5Si a t\u00EDm p\u0159isp\u00EDvaj\u00ED k jej\u00ED vynikaj\u00EDc\u00ED creepov\u00E9 pevnosti"@cs . . "GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . . . . "705;711" . "titanium aluminides;creep;microstructure"@en . "7"^^ . "2"^^ . . . . "P(IBS2041001), P(OC 522.100), Z(AV0Z2041904)" . "7-9" . "Creep strength and microstructure of Ti-48Al-2Cr-2Nb-1B and Ti-46Al-2W-0.5Si-(0.7B) alloys are compared. The influence of a prior-to-creep heat treatment on the initial microstructure is investigated. The isothermally forged and heat treated Ti-48Al-2Cr-2Nb-1B alloy was tested in nearly lamellar and equiaxed modifications while the cast and HIP-ped Ti-46Al-2W-0.5Si alloy was either nearly lamellar or duplex before creep. All these microstructural variants were crept in tension at 1023 K and at different applied stresses. Experimental results obtained in the present study suggest that, in spite of creep strength variations resulting from the different microstructural states, the Ti-46Al-2W-0.5Si alloy performs better than the Ti-48Al-2Cr-2Nb-1B alloy. Transmission electron microscopy analysis provided evidence that W- and Si-rich phases that precipitate both, on the lamellar boundaries and inside the gamma grains, contribute to the superior creep strength of the Ti-46Al-2W-0.5Si alloy"@en .