. . . . "gamma based TiAl alloys carbon alloying heat treatmen internal structure neutron diffraction TEM creep-fatigue properties"@en . . "The aim of the project is development of new advanced cast multiphase gamma based TiAl-8Nb-X alloys alloyed with the graded carbon content (0.2 to 1 at. %), produced so far only by powder metallurgy. Sufficient thermo-mechanical stability of these alloys will be guaranteed by the lamellar structure strengthened by favorable distributed precipitates obtained using an optimized complex heat treatment. The main pertinent applications of the alloys suggested are turbocharger rotor or gas turbine blade in automotive and power industry, respectively, in which a decisive degradation mechanism represents creep-fatigue interaction at higher temperatures. The structure of new-developed cast alloys and its thermo-mechanical stability will be studied both in virgin state after optimized heat treatment and after high temperature creep-fatigue tests. Neutron diffraction (in-situ and post-mortem studies), TEM (transmission electron microscopy) and other modern experimental techniques will be used for the structure analysis and the study of damage mechanisms."@en . "2015-04-23+02:00"^^ . "0"^^ . . . . . "2016-12-31+01:00"^^ . . "GAP107/11/0704" . "http://www.isvav.cz/projectDetail.do?rowId=GAP107/11/0704"^^ . "1"^^ . "Optimalizace struktury a vlastnosti modern\u00EDch vysokoteplotn\u00EDch lit\u00FDch materi\u00E1l\u016F legovan\u00FDch uhl\u00EDkem pomoc\u00ED komplexn\u00EDho tepeln\u00E9ho zpracov\u00E1n\u00ED" . "1"^^ . . "2014-04-18+02:00"^^ . "Odlo\u017Een\u00E1 z\u00E1v\u011Bre\u010Dn\u00E1 zpr\u00E1va"@cs . . . "Deferred Final Report"@en . . . . . "Podstatou navrhovan\u00E9ho projektu je v\u00FDvoj nov\u00FDch modern\u00EDch v\u00EDcef\u00E1zov\u00FDch lit\u00FDch slitin\u00A0gama TiAl-8Nb-X legovan\u00FDch odstup\u0148ovan\u00FDm mno\u017Estv\u00EDm uhl\u00EDku (0,2 a\u017E 1 at. %). Teplotn\u011B mechanick\u00E1 stabilita t\u011Bchto slitin dosud vyr\u00E1b\u011Bn\u00FDch pouze metodami pr\u00E1\u0161kov\u00E9 metalurgie bude zaji\u0161t\u011Bna z\u00EDsk\u00E1n\u00EDm lamel\u00E1rn\u00ED struktury vytvrzen\u00E9 vhodn\u011B rozlo\u017Een\u00FDmi precipit\u00E1ty. Komplexn\u00ED tepeln\u00E9 zpracov\u00E1n\u00ED pro dosa\u017Een\u00ED uveden\u00E9ho strukturn\u00EDho stavu bude optimalizov\u00E1no s ohledem na aplikace t\u011Bchto materi\u00E1l\u016F p\u0159i vysok\u00FDch teplot\u00E1ch, mezi n\u011B\u017E pat\u0159\u00ED lopatky plynov\u00FDch turb\u00EDn \u010Di rotor turbodmychadla a u nich\u017E se jako rozhoduj\u00EDc\u00ED po\u0161kozuj\u00EDc\u00ED mechanismus za re\u00E1ln\u00FDch podm\u00EDnek nam\u00E1h\u00E1n\u00ED uplat\u0148uje interakce creepu a \u00FAnavy. Studium struktury nov\u011B vyvinut\u00FDch lit\u00FDch slitin a jej\u00ED teplotn\u011B mechanick\u00E9 stability bude provedeno jak p\u0159i jejich p\u0159\u00EDprav\u011B po tepeln\u00E9m zpracov\u00E1n\u00ED tak zejm\u00E9na po zkou\u0161k\u00E1ch za vysok\u00FDch teplot v\u00A0podm\u00EDnk\u00E1ch creepov\u011B-\u00FAnavov\u00E9ho nam\u00E1h\u00E1n\u00ED. Ke strukturn\u00EDmu rozboru bude vyu\u017Eito neutronov\u00E9 difrakce (experimenty in-situ a post-mortem), transmisn\u00ED elektronov\u00E9 mikroskopie (TEM) a dal\u0161\u00EDch modern\u00EDch experiment\u00E1ln\u00EDch technik." . "Optimization of structure and properties of advanced high-temperature cast materials alloyed with carbon by complex heat treatment"@en . "11"^^ . "11"^^ . "2011-01-01+01:00"^^ . . .