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

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	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. Application of 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 rate and 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. 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. Application of 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 rate and 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. (en)
Title	Influence of calculation method on value of activation energy in hot forming Influence of calculation method on value of activation energy in hot forming (en)
skos:prefLabel	Influence of calculation method on value of activation energy in hot forming Influence of calculation method on value of activation energy in hot forming (en)
skos:notation	RIV/61989100:27360/13:86088481!RIV14-GA0-27360___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(ED0040/01/01), P(GAP107/10/0438)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Kawulok, Rostislav Kawulok, Petr Schindler, Ivo
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola báňská - Technická univerzita Ostrava / Fakulta metalurgie a materiálového inženýrství
http://linked.open...dnocenehoVysledku	79687
http://linked.open...ai/riv/idVysledku	RIV/61989100:27360/13:86088481
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	regression analysis.; activation energy; stress-strain curve; strain rate; metal and alloys; Hot forming (en)
http://linked.open.../riv/klicoveSlovo	stress-strain curve activation energy Hot forming metal and alloys regression analysis. strain rate
http://linked.open...odStatuVydavatele	IL - Stát Izrael
http://linked.open...ontrolniKodProRIV	[DBFEB0DDA862]
http://linked.open...i/riv/nazevZdroje	High temperature materials and processes
http://linked.open...in/vavai/riv/obor	JG
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Regional materials science and technology centre Physical and metallurgical aspects of deformation behaviour of iron aluminides with extremely low plasticity
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	32
http://linked.open...iv/tvurceVysledku	Hadasik, Eugeniusz Kawulok, Petr Kuc, Dariusz Schindler, Ivo Kawulok, Rostislav
http://linked.open...ain/vavai/riv/wos	000322972800008
issn	0334-6455
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1515/htmp-2012-0106
http://localhost/t...ganizacniJednotka	27360

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