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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/ED0040%2F01%2F01" target="_blank" >ED0040/01/01: Regionální materiálově technologické výzkumné centrum</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Hutnické listy

ISSN

0018-8069

e-ISSN

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Svazek periodika

64

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

4

Strana od-do

10-13

Kód UT WoS článku

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EID výsledku v databázi Scopus

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