Dwell effect on low cycle fatigue behaviour of cast superalloy Inconel 792-5A at 800 °C

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Dwell effect on low cycle fatigue behaviour of cast superalloy Inconel 792-5A at 800 °C

Popis výsledku v původním jazyce

The present paper is focused on the study of the effect of tensile and compressive dwells on the stress-strain behaviour, fatigue life and deformation mechanisms in cast polycrystalline nickel base superalloy Inconel 792-5A at temperature 800 °C in air.Button-end specimens were fatigued with constant strain rate and constant total strain range. Dwell time was 10 minutes. Cyclic hardening/softening curves, stress-strain curves and fatigue life curves have been obtained for continuous cycling and cyclingboth with tensile and with compressive dwells. Fatigue life curves do not result in any significant reduction of the fatigue life. Surface relief was observed using scanning electron microscopy. It strongly depends on the type of fatigue test and the value of total strain amplitude. Internal structure, studied by transmission electron microscopy, was dependent on the strain amplitude and type of test. Bands of high dislocation density were observed only in continuous cycling.

Název v anglickém jazyce

Dwell effect on low cycle fatigue behaviour of cast superalloy Inconel 792-5A at 800 °C

Popis výsledku anglicky

The present paper is focused on the study of the effect of tensile and compressive dwells on the stress-strain behaviour, fatigue life and deformation mechanisms in cast polycrystalline nickel base superalloy Inconel 792-5A at temperature 800 °C in air.Button-end specimens were fatigued with constant strain rate and constant total strain range. Dwell time was 10 minutes. Cyclic hardening/softening curves, stress-strain curves and fatigue life curves have been obtained for continuous cycling and cyclingboth with tensile and with compressive dwells. Fatigue life curves do not result in any significant reduction of the fatigue life. Surface relief was observed using scanning electron microscopy. It strongly depends on the type of fatigue test and the value of total strain amplitude. Internal structure, studied by transmission electron microscopy, was dependent on the strain amplitude and type of test. Bands of high dislocation density were observed only in continuous cycling.

Druh

D - Stať ve sborníku

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the Seventh International Conference on Low Cycle Fatigue - LCF7

ISBN

978-3-9814516-2-7

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

113-118

Název nakladatele

DMV

Místo vydání

Berlín

Místo konání akce

Aachen

Datum konání akce

9. 9. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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