"JUNIORMAT '03 /4./." . "statistical theory of the hysteresis loop; ferritic stainless steel \u016F dislocation substructure"@en . "602548" . . "RIV/68081723:_____/03:07033094!RIV/2004/AV0/A07004/N" . . . . "Byla analyzov\u00E1na cyklick\u00E1 plastick\u00E1 odezva polykrystalick\u00E9 feritick\u00E9 ocel\u00ED s b.c.c. krystalografickou m\u0159\u00ED\u017Ekou, na z\u00E1klad\u011B obecn\u00E9 statistick\u00E9 teorie hyster\u00E9zn\u00ED smy\u010Dky, cyklovan\u00E9 v magnetick\u00E9m poli. Sou\u010Dasn\u011B byla studov\u00E1na vnit\u0159n\u00ED disloka\u010Dn\u00ED substruktura, vyvinut\u00E1 v materi\u00E1lu v pr\u016Fb\u011Bhu cyklov\u00E1n\u00ED, pomoc\u00ED transmisn\u00EDho elektronov\u00E9ho mikroskopu a Kikuchiho lini\u00ED. Nehomogenn\u00ED rozlo\u017Een\u00ED dislokac\u00ED do p\u00E1s\u016F odpov\u00EDd\u00E1 lokalizaci cyklick\u00E9 plastick\u00E9 deformace podporuje pou\u017Eit\u00ED statistick\u00E9 teorie. Anal\u00FDza tvaru hyster\u00E9zn\u00EDch smy\u010Dek vyhodnocov\u00E1n\u00EDm prvn\u00ED a druh\u00E9 derivace p\u016Fl-smy\u010Dek n\u00E1m umo\u017Enila ur\u010Dit efektivn\u00ED nap\u011Bt\u00ED a funkci hustoty pravd\u011Bpodobnosti kritick\u00FDch intern\u00EDch materi\u00E1l\u016F. Byl vysv\u011Btlen extra vrchol na k\u0159ivk\u00E1ch druh\u00FDch derivac\u00ED, cyklov\u00E1n\u00EDm v magnetick\u00E9 poli, pomoc\u00ED\u016F magnetoelastick\u00E9ho efektu." . "250;251" . "CYKLICK\u00C1 PLASTICITA A DISLOKA\u010CN\u00CD SUBSTRUKTURA FERITICK\u00C9 NEREZOV\u00C9 OCELI." . . "CYCLIC PLASTICITY AND DISLOCATION SUBSTRUCTURE OF ferritic STAINLESS STEEL."@en . . "Brno [CZ]" . "CYKLICK\u00C1 PLASTICITA A DISLOKA\u010CN\u00CD SUBSTRUKTURA FERITICK\u00C9 NEREZOV\u00C9 OCELI."@cs . "[C6B67A3AC0ED]" . . . . . "2"^^ . "2003-09-23+02:00"^^ . "Brno" . . "CYKLICK\u00C1 PLASTICITA A DISLOKA\u010CN\u00CD SUBSTRUKTURA FERITICK\u00C9 NEREZOV\u00C9 OCELI." . "CYCLIC PLASTICITY AND DISLOCATION SUBSTRUCTURE OF ferritic STAINLESS STEEL."@en . "Pol\u00E1k, Jaroslav" . . . "CYKLICK\u00C1 PLASTICITA A DISLOKA\u010CN\u00CD SUBSTRUKTURA FERITICK\u00C9 NEREZOV\u00C9 OCELI."@cs . "2"^^ . . "P(GA106/02/0584), P(IAA2041201), P(IBS2041001), Z(AV0Z2041904)" . . "The cyclic plastic response of polycrystalline ferritic stainless steel with b.c.c. structure is analysed in terms of the general statistical theory of the hysteresis loop and cycled in the magnetic field. Simultaneously, the internal dislocation substructure developed in the material during cyclic straining is studied using transmission electron microscopy and Kikuchi lines. The inhomogeneous distribution of dislocations into the persistent slip bands can be correlated with the localization of the cyclic plastic strain. The analysis of the loop shape by plotting the first and the second derivative of the half-loop allows determining the effective stress and the probability density function of the critical internal stresses. Extra peak of the second derivative of the half-loop was explained by the inverse magneto-elastic effect."@en . "Petrenec, Martin" . "Vysok\u00E9 u\u010Den\u00ED technick\u00E9 v Brn\u011B. Fakulta strojn\u00EDho in\u017Een\u00FDrstv\u00ED" . . "0"^^ . . "RIV/68081723:_____/03:07033094" . "0"^^ . "2"^^ . . . .