"V r\u00E1mci \u0159e\u0161en\u00ED bylo hodnoceno 11 provozn\u011B vyroben\u00FDch taveb, z nich\u017E byly vyv\u00E1lcov\u00E1ny tlust\u00E9 plechy, kter\u00E9 byly v\u017Edy dov\u00E1lcov\u00E1ny pod teplotou Ar3 a n\u00E1sledn\u011B ochlazov\u00E1ny na vzduchu. V\u00FDsledkem bylo dosa\u017Een\u00ED normovan\u00FDch hodnot pevnost\u00ED, vrubov\u00E1 hou\u017Eevnatost vykazovala p\u0159\u00EDzniv\u00E9 v\u00FDsledky v pod\u00E9ln\u00E9m sm\u011Bru (vrub orientov\u00E1n kolmo na sm\u011Br tv\u00E1\u0159en\u00ED), ale odolnost proti vod\u00EDkov\u00E9 k\u0159ehkosti (hodnoceno HIC podle normy NACE) byla neuspokojiv\u00E1 d\u00EDky \u0161kodliv\u00E9mu segrega\u010Dn\u00EDmu p\u00E1sov\u00E1n\u00ED, kter\u00E9 se vyvinulo po dov\u00E1lcov\u00E1n\u00ED v n\u00EDzkoteplotn\u00ED oblasti. Pro dosa\u017Een\u00ED vod\u00EDkov\u00E9 odolnosti u jakostn\u00EDho stupn\u011B X52, resp. X60 je mo\u017Eno aplikovat normaliza\u010Dn\u00ED \u017E\u00EDh\u00E1n\u00ED (event. i dvojn\u00E1sobn\u011B), co\u017E ale vede ke sn\u00ED\u017Een\u00ED pevnostn\u00ED \u00FArovn\u011B, jak bylo ji\u017E v minulosti prok\u00E1z\u00E1no. Neodpov\u00EDd\u00E1 to tak\u00E9 in\u017Een\u00FDrsk\u00E9mu \u0159e\u0161en\u00ED. Z tohoto d\u016Fvodu bylo provedeno u jedn\u00E9 provozn\u011B vyroben\u00E9 tavby banitick\u00E9 (doln\u00ED bainit) kalen\u00ED s n\u00E1sledn\u00FDm popu\u0161t\u011Bn\u00EDm, co\u017E zajistilo vysokou pevnostn\u00ED \u00FArove\u0148, uspokojivou vrubovou hou\u017Eevnatost, v\u00FDrazn\u00E9 zlep\u0161en\u00ED parametr\u016F HIC ve srovn\u00E1n\u00ED se"@cs . "Matocha, Karel" . . . . . "[C57212AE1223]" . . "V r\u00E1mci \u0159e\u0161en\u00ED bylo hodnoceno 11 provozn\u011B vyroben\u00FDch taveb, z nich\u017E byly vyv\u00E1lcov\u00E1ny tlust\u00E9 plechy, kter\u00E9 byly v\u017Edy dov\u00E1lcov\u00E1ny pod teplotou Ar3 a n\u00E1sledn\u011B ochlazov\u00E1ny na vzduchu. V\u00FDsledkem bylo dosa\u017Een\u00ED normovan\u00FDch hodnot pevnost\u00ED, vrubov\u00E1 hou\u017Eevnatost vykazovala p\u0159\u00EDzniv\u00E9 v\u00FDsledky v pod\u00E9ln\u00E9m sm\u011Bru (vrub orientov\u00E1n kolmo na sm\u011Br tv\u00E1\u0159en\u00ED), ale odolnost proti vod\u00EDkov\u00E9 k\u0159ehkosti (hodnoceno HIC podle normy NACE) byla neuspokojiv\u00E1 d\u00EDky \u0161kodliv\u00E9mu segrega\u010Dn\u00EDmu p\u00E1sov\u00E1n\u00ED, kter\u00E9 se vyvinulo po dov\u00E1lcov\u00E1n\u00ED v n\u00EDzkoteplotn\u00ED oblasti. Pro dosa\u017Een\u00ED vod\u00EDkov\u00E9 odolnosti u jakostn\u00EDho stupn\u011B X52, resp. X60 je mo\u017Eno aplikovat normaliza\u010Dn\u00ED \u017E\u00EDh\u00E1n\u00ED (event. i dvojn\u00E1sobn\u011B), co\u017E ale vede ke sn\u00ED\u017Een\u00ED pevnostn\u00ED \u00FArovn\u011B, jak bylo ji\u017E v minulosti prok\u00E1z\u00E1no. Neodpov\u00EDd\u00E1 to tak\u00E9 in\u017Een\u00FDrsk\u00E9mu \u0159e\u0161en\u00ED. Z tohoto d\u016Fvodu bylo provedeno u jedn\u00E9 provozn\u011B vyroben\u00E9 tavby banitick\u00E9 (doln\u00ED bainit) kalen\u00ED s n\u00E1sledn\u00FDm popu\u0161t\u011Bn\u00EDm, co\u017E zajistilo vysokou pevnostn\u00ED \u00FArove\u0148, uspokojivou vrubovou hou\u017Eevnatost, v\u00FDrazn\u00E9 zlep\u0161en\u00ED parametr\u016F HIC ve srovn\u00E1n\u00ED se" . "Research of metallurgic-technological factors influence on high strength sheets properties of X52-X70 grade for sour and sweet mediums"@en . "Mazancov\u00E1, Eva" . . . . "Research of metallurgic-technological factors influence on high strength sheets properties of X52-X70 grade for sour and sweet mediums"@en . "V\u00FDzkum vlivu metalurgicko-technologick\u00FDch faktor\u016F na vlastnosti vysokopevn\u00FDch plech\u016F jakosti X52 a\u017E X70 pro kysel\u00E1 a nekysel\u00E1 prost\u0159ed\u00ED"@cs . . "P(FI-IM3/159)" . . "27360" . . . "405204" . . "V\u00FDzkum vlivu metalurgicko-technologick\u00FDch faktor\u016F na vlastnosti vysokopevn\u00FDch plech\u016F jakosti X52 a\u017E X70 pro kysel\u00E1 a nekysel\u00E1 prost\u0159ed\u00ED" . "strength; notch toughness values; hydrogen response; acicular ferrite; accelerated cooling"@en . . . "2"^^ . . . "RIV/61989100:27360/08:00022169" . "V\u00FDzkum vlivu metalurgicko-technologick\u00FDch faktor\u016F na vlastnosti vysokopevn\u00FDch plech\u016F jakosti X52 a\u017E X70 pro kysel\u00E1 a nekysel\u00E1 prost\u0159ed\u00ED"@cs . "In frame of solution 11 produced heats were evaluated, being rolled into thick sheets with finishing rolling temperature under the Ar3 and subsequently air cooled. That resulted in standardized strength values, positive notch toughness values in longitude direction (notch orientated into rolling direction), however hydrogen response (HIC according NACE) was unsatisfactory thanks detrimental segregation strips. Those were formed in finishing rolling process at low temperatures. In case of X52 and X60 grades, for favourable hydrogen response normalisation annealing can be applied (double eventually), however resulting into lower strengths how was already presented. This solution does not also correspond to engineering approach. That was reason for low bainite quenching followed by tempering in case of one heat leading to high strength properties, satisfied notch toughness values, markedly better HIC parameters (in comparison with as rolled conditions), even when unacceptable in this time, too. Consequen"@en . "2"^^ . . "RIV/61989100:27360/08:00022169!RIV10-MPO-27360___" . "V\u00FDzkum vlivu metalurgicko-technologick\u00FDch faktor\u016F na vlastnosti vysokopevn\u00FDch plech\u016F jakosti X52 a\u017E X70 pro kysel\u00E1 a nekysel\u00E1 prost\u0159ed\u00ED" .