. . . . . . . . . . . "V navrhovan\u00E9m projektu bude studov\u00E1na mikrostruktura ultrajemnozrnn\u00E9ho Mg a vybran\u00FDch slitin Mg s prvky vz\u00E1cn\u00FDch zemin. Ultrajemnozrnn\u00E9 materi\u00E1ly budou p\u0159ipraveny pomoc\u00ED siln\u00E9 plastick\u00E9 deformace metodou ECAE (Equal Channel Angular Extrusion). Tatometoda je velmi vhodn\u00E1 i pro p\u0159\u00EDpadn\u00E9 pr\u016Fmyslov\u00E9 vyu\u017Eit\u00ED, proto\u017Ee p\u0159i n\u00ED nedoch\u00E1z\u00ED ke zm\u011Bn\u011B makroskopick\u00FDch rozm\u011Br\u016F vzorku. O\u010Dek\u00E1v\u00E1me, \u017Ee zmen\u0161en\u00ED st\u0159edn\u00ED velikosti zrn m\u016F\u017Ee v\u00E9st k zlep\u0161en\u00ED u\u017Eit\u00FDch vlastnost\u00ED (p\u0159edev\u0161\u00EDm ta\u017Enosti) vytvrditeln\u00FDch Mg slitins prvky vz\u00E1cn\u00FDch zemin, kter\u00E1 je st\u00E1le nedostate\u010Dn\u00E1 pro \u0161ir\u0161\u00ED pr\u016Fmyslov\u00E9 vyu\u017Eit\u00ED. V r\u00E1mci navrhovan\u00E9ho projektu bude provedena detailn\u00ED charakterizace mikrostruktury ultrajemnozrnn\u00E9ho Mg a Mg slitin vybran\u00FDch na z\u00E1klad\u011B v\u00FDsledk\u016F z\u00EDskan\u00FDch v nosn\u00E9mprojektu . Zvl\u00E1\u0161tn\u00ED pozornost bude v\u011Bnov\u00E1na struktu\u0159e poru\u0161en\u00FDch oblast\u00ED pod\u00E9l nerovnov\u00E1\u017En\u00FDch hranic zrn. Studovan\u00E9 vzorky budou n\u00E1sledn\u011B podrobeny izochronn\u00EDmu \u017E\u00EDh\u00E1n\u00ED a bude sledov\u00E1na evoluce mikrostruktury s rostouc\u00ED teplotou. Pro charakterizaci" . . "http://www.isvav.cz/projectDetail.do?rowId=GP106/01/D049"^^ . "V r\u00E1mci tohoto projektu byly \u00FAsp\u011B\u0161n\u011B p\u0159ipraveny ultrajemnozrnn\u00E9 (UFG) vzorky \u010Dist\u00E9ho Mg a vybran\u00FDch perspektivn\u00EDch Mg-slitin. K p\u0159\u00EDprav\u011B UFG materi\u00E1l\u016F byla pou\u017Eita metoda torzn\u00ED deformace za vysok\u00E9ho tlaku, kter\u00E1 vyu\u017E\u00EDv\u00E1 aplikaci siln\u00E9 plastick\u00E9 deformac"@cs . "The present project deals with investigation of microstructure of ultra fine grained Mg and selected Mg alloys with rare earth elements. The ultra fine grained materials will be prepared by severe plastic deformation using equal channel angular extrusion(ECAE). This technique is very attractive also for future applications in industry because makroskopic dimensions of specimens remain unchanged. It is expected that decrease of the mean grain size may result in improved mechanical properties, especiallystrength and ductility, of ultra fine grained Mg alloys compared to conventional coarse grained ones. It is important for future use of these alloys in industry as coarse grained Mg alloys with rare earth elements do not exhibit strength and ductilityhigh enough for wide range of applications in industry. Detailed investigation of microstructure of the ultra fine grained Mg and Mg alloys selected on the base of results of investigations performed in the parent project will be performed in the"@en . "2008-07-23+02:00"^^ . . . . . . "Studium ultrajemnozrnn\u00E9ho ho\u0159\u010D\u00EDku a slitin ho\u0159\u010D\u00EDku s prvky vz\u00E1cn\u00FDch zemin" . "In the present project we successfully prepared ultra fine grained (UFG) pure Mg and selected perspective Mg-based alloys. Preparation of the UFG materials was performed by high pressure torsion which uses severe plastic deformation (SPD) for extreme gra"@en . "0"^^ . "0"^^ . . "4"^^ . "GP106/01/D049" . "4"^^ . "1"^^ . "Investigation of ultra fine grained magnesium and magnesium alloys with rare earth elements prepared by severe platic deformation"@en . . "Neuvedeno."@en . .