New Model of Hot Mean Flow Stress of the C-Mn-Nb-V Microalloyed Steel

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F11%3A86081357" target="_blank" >RIV/61989100:27360/11:86081357 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
New Model of Hot Mean Flow Stress of the C-Mn-Nb-V Microalloyed Steel
Original language description
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-Nb-V, as well as of the plain-carbon C-Mn steel, were developed. They describe with a very good accuracy the hot deformation resistance in the temperature range T = 850 ? 1190 °C, effective height reductions up to eh = 0.54, and strain rates in the range of é = 10 ? 99 s-1. Difficulty in the mathematical description of the influenceof temperature on deformation resistance in the wide range of temperature by a single equation was solved by introducing another constant in the temperature member of the conventional equation ?m = f(eh,é,T). 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.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Project
<a href="/en/project/ED0040%2F01%2F01" target="_blank" >ED0040/01/01: Regional materials science and technology centre</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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