Influence of calculation method on value of activation energy in hot forming

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F13%3A86088481" target="_blank" >RIV/61989100:27360/13:86088481 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1515/htmp-2012-0106" target="_blank" >http://dx.doi.org/10.1515/htmp-2012-0106</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/htmp-2012-0106" target="_blank" >10.1515/htmp-2012-0106</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of calculation method on value of activation energy in hot forming

Popis výsledku v původním jazyce

Influence of the methodology of mathematical processing of experimental data on the calculated value of the activation energy in hot forming was evaluated for three very different alloys: iron aluminide, low-alloyed steel and magnesium alloy. Applicationof the mean strain rates is appropriate but calculations with use of nominal strain rates of the plastometric tests do not give significantly different results. Calculations based on the processing of the simplified power dependence between strain rateand peak stress can give the results differing very substantially from those that were gained by the solution of the complex hyperbolic relationship. This has negative impacts, particularly at prediction of the maximum flow stress in the broad range of forming conditions, represented by the Zener-Hollomon parameter.

Název v anglickém jazyce

Influence of calculation method on value of activation energy in hot forming

Popis výsledku anglicky

Influence of the methodology of mathematical processing of experimental data on the calculated value of the activation energy in hot forming was evaluated for three very different alloys: iron aluminide, low-alloyed steel and magnesium alloy. Applicationof the mean strain rates is appropriate but calculations with use of nominal strain rates of the plastometric tests do not give significantly different results. Calculations based on the processing of the simplified power dependence between strain rateand peak stress can give the results differing very substantially from those that were gained by the solution of the complex hyperbolic relationship. This has negative impacts, particularly at prediction of the maximum flow stress in the broad range of forming conditions, represented by the Zener-Hollomon parameter.

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

High temperature materials and processes

ISSN

0334-6455

e-ISSN

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Svazek periodika

32

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

IL - Stát Izrael

Počet stran výsledku

7

Strana od-do

149-155

Kód UT WoS článku

000322972800008

EID výsledku v databázi Scopus

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