. . "2" . "Microscopic investigation of surface layers on rails"@en . "NL - Nizozemsko" . . . . "Studium povrchov\u00FDch vrstev kolejnic mikroskopick\u00FDmi metodami"@cs . "3"^^ . "0169-4332" . . "Microscopic investigation of surface layers on rails" . . "RIV/68081723:_____/05:00025900" . "10"^^ . . "M\u00F6ssbauer phase analysis; TEM; rail"@en . "Svoboda, Ji\u0159\u00ED" . "530169" . "Schneeweiss, Old\u0159ich" . "P(IBS2041105), Z(AV0Z20410507)" . "Microscopic investigation of surface layers on rails"@en . "Fischer, F. D." . "Studium povrchov\u00FDch vrstev kolejnic mikroskopick\u00FDmi metodami"@cs . "Jir\u00E1skov\u00E1, Yvonna" . . "Daves, W." . "Reflection gamma-ray and conversion electron M\u00F6ssbauer spectroscopy completed by optical, transmission electron and atomic force microscopy and microhardness measurements are applied in order to study the load and temperature driven changes in the phase composition and microstructure of rail specimens at the surface and in the bulk. It is shown that severe plastic deformation due to the normal pressure as well as shearing together with a rapid change of temperature at service conditions lead to decomposition of the initial pearlite structure accompanied by surface oxidation, defect formation, carbon clustering, precipitation of nanosize carbide particles and austenitisation of the material. A severe plastic deformation is simulated using ball milling of specimens machined from a virgin rail and the results of phase analysis are compared."@en . . . "132;141" . . "RIV/68081723:_____/05:00025900!RIV06-AV0-68081723" . . . "Applied Surface Science" . "Microscopic investigation of surface layers on rails" . "Reflection gamma-ray and conversion electron M\u00F6ssbauer spectroscopy completed by optical, transmission electron and atomic force microscopy and microhardness measurements are applied in order to study the load and temperature driven changes in the phase composition and microstructure of rail specimens at the surface and in the bulk. It is shown that severe plastic deformation due to the normal pressure as well as shearing together with a rapid change of temperature at service conditions lead to decomposition of the initial pearlite structure accompanied by surface oxidation, defect formation, carbon clustering, precipitation of nanosize carbide particles and austenitisation of the material. A severe plastic deformation is simulated using ball milling of specimens machined from a virgin rail and the results of phase analysis are compared." . . . "239" . . . "[D4585787B2E2]" . . "Zm\u011Bny struktury a f\u00E1zov\u00E9ho slo\u017Een\u00ED v povrchu a objemu kolejnic, vyvolan\u00E9 mechanick\u00FDm a tepeln\u00FDm nam\u00E1h\u00E1n\u00EDm, jsou studov\u00E1ny pomoc\u00ED mikroskopicky citliv\u00FDch metod, M\u00F6ssbauerovy spektroskopie ?-z\u00E1\u0159en\u00ED v uspo\u0159\u00E1d\u00E1n\u00ED na odraz, M\u00F6ssbauerovy spektroskopie konverzn\u00EDch elektron\u016F, optickou a transmisn\u00ED elektronovou mikroskopi\u00ED a mikroskopi\u00ED atom\u00E1rn\u00EDch sil, dopln\u011Bn\u00FDch m\u011B\u0159en\u00EDm mikrotvrdosti. Je uk\u00E1z\u00E1no, \u017Ee siln\u00E1 plastick\u00E1 deformace, vyvolan\u00E1 jak tlakov\u00FDm tak smykov\u00FDm nam\u00E1h\u00E1n\u00EDm kolejnic v provozn\u00EDch podm\u00EDnk\u00E1ch, spole\u010Dn\u011B se zm\u011Bnami teploty vede ke zm\u011Bn\u00E1m p\u016Fvodn\u00ED perlitick\u00E9 struktury, oxidaci povrchu, tvorb\u011B defekt\u016F, vzniku uhl\u00EDkov\u00FDch shluk\u016F a precipitaci karbidick\u00FDch f\u00E1z\u00ED a austenitizaci. Mlet\u00EDm vzork\u016F p\u016Fvodn\u00EDho materi\u00E1lu kolejnic v kulov\u00E9m ml\u00FDnu je simulov\u00E1na siln\u00E1 plastick\u00E1 deformace a v\u00FDsledky strukturn\u00EDch a f\u00E1zov\u00FDch zm\u011Bn jsou porovn\u00E1v\u00E1ny s v\u00FDsledky z\u00EDskan\u00FDmi z anal\u00FDzy vzork\u016F kolejnic vystaven\u00FDch provozn\u00EDm podm\u00EDnk\u00E1m."@cs . "5"^^ .