"Tanger s.r.o." . "P(ED0040/01/01), P(TA01010838)" . . . . "Phenomenological model of hot deformation resistance of the C-Mn-V-B-type HSLA steel" . "Phenomenological model of hot deformation resistance of the C-Mn-V-B-type HSLA steel" . . "Va\u0161ek, Zden\u011Bk" . "Phenomenological model of hot deformation resistance of the C-Mn-V-B-type HSLA steel"@en . . "Based on the measurement of roll forces during the laboratory rolling of flat samples graded in thickness, new hot mean flow stress model of the HSLA steel of the type C-Mn-V-B was developed. It describes with a very good accuracy the mean flow stress m in the temperature range T = 850 \u2013 1190 degree C, effective height reductions up to eh = 0.66, and strain rates in the range of \u0117 = 8 \u2013 103 s-1. The newly proposed model solves by phenomenological means a frequent problem with heteroscedasticity of relative deviations between the calculated and experimental values of deformation resistance in the case of the temperature effect. Mean flow stress values of steel C-Mn-V-B were compared with the formerly obtained m values for steels of type C-Mn as well as C-Mn-Nb-V. It was proved that HSLA steel with V and B displayed relatively very low deformation resistance and a minimum strain sensitivity at hot forming." . . . . "Phenomenological model of hot deformation resistance of the C-Mn-V-B-type HSLA steel"@en . . "RIV/61989100:27360/12:86084484" . "Pachlopn\u00EDk, Radim" . "6"^^ . "Brno" . "Schindler, Ivo" . . . . "2012-05-23+02:00"^^ . "Plura, Ji\u0159\u00ED" . "laboratory rolling; hot mean flow stress model; HSLA steel"@en . "6"^^ . . "METAL 2012 : 21st International Conference on Metallurgy and Materials : conference proceedings" . "[4C0802E8577D]" . . . "Kawulok, Petr" . "4"^^ . "RIV/61989100:27360/12:86084484!RIV13-TA0-27360___" . . . "Rusz, Stanislav" . . "27360" . . "Based on the measurement of roll forces during the laboratory rolling of flat samples graded in thickness, new hot mean flow stress model of the HSLA steel of the type C-Mn-V-B was developed. It describes with a very good accuracy the mean flow stress m in the temperature range T = 850 \u2013 1190 degree C, effective height reductions up to eh = 0.66, and strain rates in the range of \u0117 = 8 \u2013 103 s-1. The newly proposed model solves by phenomenological means a frequent problem with heteroscedasticity of relative deviations between the calculated and experimental values of deformation resistance in the case of the temperature effect. Mean flow stress values of steel C-Mn-V-B were compared with the formerly obtained m values for steels of type C-Mn as well as C-Mn-Nb-V. It was proved that HSLA steel with V and B displayed relatively very low deformation resistance and a minimum strain sensitivity at hot forming."@en . "158490" . "Ostrava" . "978-80-87294-31-4" . . .