"Nov\u00E9 technologie tv\u00E1\u0159en\u00ED mezi n\u011B\u017E pat\u0159\u00ED i technologie ECAP, jsou zam\u011B\u0159eny na zjem\u0148ov\u00E1n\u00ED zrn intenzivn\u00EDmi plastick\u00FDmi deformacemi. C\u00EDlem je vyrobit konstruk\u010Dn\u00ED kovov\u00E9 materi\u00E1ly s ultrajemn\u00FDm zrnem, s vy\u0161\u0161\u00EDmi mechanick\u00FDmi vlastnostmi. Tyto struktury slibuj\u00ED dosa\u017Een\u00ED vy\u0161\u0161\u00EDch mechanick\u00FDch vlastnost\u00ED, ve srovn\u00E1n\u00ED s jejich hrubozrnn\u00FDmi ekvivalenty. Vych\u00E1z\u00ED se z p\u0159edstavy platnosti Hall-Petchova vztahu σ f =σ o + k.d-1/2a\u017E do oblasti zrn nanometrick\u00FDch rozm\u011Br\u016F. Byly vyvinuty r\u016Fzn\u00E9 metody p\u0159\u00EDpravy t\u011Bchto materi\u00E1l\u016F, p\u0159i\u010Dem\u017E hlavn\u00EDm probl\u00E9mem je vnit\u0159n\u00ED homogenita polotovar\u016F, velikost polotovaru, deforma\u010Dn\u00ED chov\u00E1n\u00ED a stabilita struktury po deformac\u00EDch."@cs . . . "510118" . . "[E93E6888CB66]" . "1"^^ . "The change of structure and properties of copper after pressing by the ECAP technology"@en . "Kocich, Radim" . . "METAL 2006, 15. mezin\u00E1rodn\u00ED konference metalurgie a materi\u00E1l\u016F" . "Zm\u011Bna struktury a vlastnost\u00ED m\u011Bdi po protla\u010Dov\u00E1n\u00ED technologi\u00ED\u00ED ECAP" . "Zm\u011Bna struktury a vlastnost\u00ED m\u011Bdi po protla\u010Dov\u00E1n\u00ED technologi\u00ED\u00ED ECAP"@cs . "Ku\u0159etov\u00E1, Barbora" . . "New forming technologies, to which the ECAP technology belongs as well, are focused on refining of grains by intensive plastic deformations. The objective consists in fabrication of structural metallic materials with ultra-fine grain with higher mechanical properties.These structures promise achievement higher mechanical properties in comparison with their coarse-grain equivalents. These concepts are based in particular on notion of validity of the Hall-Petch relationship σf = σo + k.d-1/2 till the sphere of grains of nanometric dimensions. There were developed various methods for preparation of these materials, the principal issues consist in internal homogeneity of raw"@en . . "Ostrava" . . "Greger, Miroslav" . "2"^^ . . "RIV/61989100:27360/06:00014294!RIV07-MSM-27360___" . . "4"^^ . "Dorociakov\u00E1, Gabriela" . "Nov\u00E9 technologie tv\u00E1\u0159en\u00ED mezi n\u011B\u017E pat\u0159\u00ED i technologie ECAP, jsou zam\u011B\u0159eny na zjem\u0148ov\u00E1n\u00ED zrn intenzivn\u00EDmi plastick\u00FDmi deformacemi. C\u00EDlem je vyrobit konstruk\u010Dn\u00ED kovov\u00E9 materi\u00E1ly s ultrajemn\u00FDm zrnem, s vy\u0161\u0161\u00EDmi mechanick\u00FDmi vlastnostmi. Tyto struktury slibuj\u00ED dosa\u017Een\u00ED vy\u0161\u0161\u00EDch mechanick\u00FDch vlastnost\u00ED, ve srovn\u00E1n\u00ED s jejich hrubozrnn\u00FDmi ekvivalenty. Vych\u00E1z\u00ED se z p\u0159edstavy platnosti Hall-Petchova vztahu σ f =σ o + k.d-1/2a\u017E do oblasti zrn nanometrick\u00FDch rozm\u011Br\u016F. Byly vyvinuty r\u016Fzn\u00E9 metody p\u0159\u00EDpravy t\u011Bchto materi\u00E1l\u016F, p\u0159i\u010Dem\u017E hlavn\u00EDm probl\u00E9mem je vnit\u0159n\u00ED homogenita polotovar\u016F, velikost polotovaru, deforma\u010Dn\u00ED chov\u00E1n\u00ED a stabilita struktury po deformac\u00EDch." . . "223-223" . "Zm\u011Bna struktury a vlastnost\u00ED m\u011Bdi po protla\u010Dov\u00E1n\u00ED technologi\u00ED\u00ED ECAP"@cs . "The change of structure and properties of copper after pressing by the ECAP technology"@en . . "ECAP; cooper; grain size"@en . "RIV/61989100:27360/06:00014294" . "27360" . "TANGER, spol. s r.o." . . "Zm\u011Bna struktury a vlastnost\u00ED m\u011Bdi po protla\u010Dov\u00E1n\u00ED technologi\u00ED\u00ED ECAP" . . "Z(MSM6198910013)" . "80-86840-18-2" . . . .