Comparison of hot deformation behavior of superalloys INCONEL 600 and INCOLOY 825

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F19%3A10243688" target="_blank" >RIV/61989100:27360/19:10243688 - 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

Comparison of hot deformation behavior of superalloys INCONEL 600 and INCOLOY 825

Popis výsledku v původním jazyce

On the hot deformation simulator HDS-20 uniaxial compression tests of two nickel superalloys supplied in the molded state were performed. The cylindrical specimens were heated at rate of 10 oC.s-1 directly to the deformation temperature (i.e. from 880 oC to 1,240 oC with dwell time of 180 s after heating) and then were compressed at a constant strain rate of 0.1 s-1, 2 s-1 or 30 s-1 to a true strain of 1.0. Both materials exhibit a similar true stress-true strain curve with a relatively strong peak signalling the initiation of dynamic recrystallization. From the peak stress, the values of hot deformation activation energy were calculated, namely 483 kJ mol-1 for Inconel 600 and 601 kJ mol-1 for Incoloy 825. With the knowledge of these variables, equations describing peak stress could be derived for both superalloys (known sinus hyperbolic relation) with good accuracy. It corresponds to the peak strain (power dependence) depending on the Zener-Hollomon parameter, which represents the temperature-compensated strain rate. These dependencies and experimental data were mathematically and graphically compared for both materials. Peak stress is the amount appropriate for simple and fast prediction of the maximum flow stress due to the deformation parameters, excluding the effect of strain.

Název v anglickém jazyce

Comparison of hot deformation behavior of superalloys INCONEL 600 and INCOLOY 825

Popis výsledku anglicky

On the hot deformation simulator HDS-20 uniaxial compression tests of two nickel superalloys supplied in the molded state were performed. The cylindrical specimens were heated at rate of 10 oC.s-1 directly to the deformation temperature (i.e. from 880 oC to 1,240 oC with dwell time of 180 s after heating) and then were compressed at a constant strain rate of 0.1 s-1, 2 s-1 or 30 s-1 to a true strain of 1.0. Both materials exhibit a similar true stress-true strain curve with a relatively strong peak signalling the initiation of dynamic recrystallization. From the peak stress, the values of hot deformation activation energy were calculated, namely 483 kJ mol-1 for Inconel 600 and 601 kJ mol-1 for Incoloy 825. With the knowledge of these variables, equations describing peak stress could be derived for both superalloys (known sinus hyperbolic relation) with good accuracy. It corresponds to the peak strain (power dependence) depending on the Zener-Hollomon parameter, which represents the temperature-compensated strain rate. These dependencies and experimental data were mathematically and graphically compared for both materials. Peak stress is the amount appropriate for simple and fast prediction of the maximum flow stress due to the deformation parameters, excluding the effect of strain.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/EF17_049%2F0008399" target="_blank" >EF17_049/0008399: Rozvoj mezisektorové spolupráce RMTVC s aplikační sférou v oblasti výzkumu progresivních a inovací klasických kovových materiálů a technologií s využitím metod modelování</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2019 : conference proceedings : peer reviewed : 28th International Conference on Metallurgy and Materials : May 22nd-24th 2019, Hotel Voronez I, Brno, Czech Republic, EU

ISBN

978-80-87294-92-5

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

444-449

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

22. 5. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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