The effect of notches on high temperature creep behaviour of CMSX-4 superalloy single crystals.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F01%3A07013212" target="_blank" >RIV/68081723:_____/01:07013212 - 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

The effect of notches on high temperature creep behaviour of CMSX-4 superalloy single crystals.

Popis výsledku v původním jazyce

This paper deals with the effect of notches on creep strength of the hi-tech high temperature material, CMSX-4 superalloy single crystals. Cylindrical bars of the orientation <001> with circumferential notches were tested at 850 C under constant loads. Two types of notches with different notch geometry and therefore with different notch acuity and different degree of stress triaxiality were used. The notched specimens exhibit a longer creep lifetime than the smooth specimens for the same net-section stress. This can be attributed to the strain constraint caused by the stress triaxiality. Stress-strain analysis of the notched specimens was performed using the general purpose finite element system ANSYS. The creep data of smooth specimens were used as input data. An excellent correlation between the creep lifetime of the notched specimens and the average value of the calculated steady-state creep strain rate was found.

Název v anglickém jazyce

The effect of notches on high temperature creep behaviour of CMSX-4 superalloy single crystals.

Popis výsledku anglicky

This paper deals with the effect of notches on creep strength of the hi-tech high temperature material, CMSX-4 superalloy single crystals. Cylindrical bars of the orientation <001> with circumferential notches were tested at 850 C under constant loads. Two types of notches with different notch geometry and therefore with different notch acuity and different degree of stress triaxiality were used. The notched specimens exhibit a longer creep lifetime than the smooth specimens for the same net-section stress. This can be attributed to the strain constraint caused by the stress triaxiality. Stress-strain analysis of the notched specimens was performed using the general purpose finite element system ANSYS. The creep data of smooth specimens were used as input data. An excellent correlation between the creep lifetime of the notched specimens and the average value of the calculated steady-state creep strain rate was found.

Druh

D - Stať ve sborníku

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

<a href="/cs/project/OC%20522.80" target="_blank" >OC 522.80: Vliv vrubů na životnost monokrystalů superslitin při creepovém a crepově/únavovém zatěžování</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2001

Kód důvěrnosti údajů

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

Název statě ve sborníku

Materials Structure and Micromechanisms of Fracture.

ISBN

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ISSN

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e-ISSN

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Počet stran výsledku

9

Strana od-do

379-386

Název nakladatele

VUT

Místo vydání

Brno

Místo konání akce

Brno [CZ]

Datum konání akce

27. 6. 2001

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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