Publication detail
High Cycle Fatigue Damage Mechanisms of MAR-M 247 Superalloy at High Temperatures
ŠMÍD, M. HORNÍK, V. HUTAŘ, P. KUNZ, L. HRBÁČEK, K.
Czech title
Mechanismus poškození při vysokocyklové únavě u superslitiny MAR-M 247 za vysokých teplot
English title
High Cycle Fatigue Damage Mechanisms of MAR-M 247 Superalloy at High Temperatures
Type
journal article in Web of Science
Language
en
Original abstract
High cycle fatigue tests of the MAR-M 247 superalloy under constant load were conducted with the aim to determine S–N curves at temperatures 650, 800, 900 and 950 °C. It has been found that the slope of the S–N curves reflects changes of the cyclic deformation mechanism with temperature. At temperatures 650 and partly at 800 °C, fatigue crack propagation exhibits crystallographic character (propagation along the {111} system) in early stages of the fatigue life. The crystallographic mode of the fatigue crack propagation was found to disappear at temperatures 900 and 950 °C.
Czech abstract
High cycle fatigue tests of the MAR-M 247 superalloy under constant load were conducted with the aim to determine S–N curves at temperatures 650, 800, 900 and 950 °C. It has been found that the slope of the S–N curves reflects changes of the cyclic deformation mechanism with temperature. At temperatures 650 and partly at 800 °C, fatigue crack propagation exhibits crystallographic character (propagation along the {111} system) in early stages of the fatigue life. The crystallographic mode of the fatigue crack propagation was found to disappear at temperatures 900 and 950 °C.
English abstract
High cycle fatigue tests of the MAR-M 247 superalloy under constant load were conducted with the aim to determine S–N curves at temperatures 650, 800, 900 and 950 °C. It has been found that the slope of the S–N curves reflects changes of the cyclic deformation mechanism with temperature. At temperatures 650 and partly at 800 °C, fatigue crack propagation exhibits crystallographic character (propagation along the {111} system) in early stages of the fatigue life. The crystallographic mode of the fatigue crack propagation was found to disappear at temperatures 900 and 950 °C.
Keywords in Czech
High cycle fatigue; S–N curves; Fractography; High temperature; EBSD analysis
Keywords in English
High cycle fatigue; S–N curves; Fractography; High temperature; EBSD analysis
Released
07.01.2016
Publisher
Springer India
ISSN
0972-2815
Volume
69
Number
2
Pages from–to
393–397
Pages count
5
BIBTEX
@article{BUT121180,
author="Miroslav {Šmíd} and Vít {Horník} and Pavel {Hutař} and Ludvík {Kunz} and Karel {Hrbáček},
title="High Cycle Fatigue Damage Mechanisms of MAR-M 247 Superalloy at High Temperatures",
year="2016",
volume="69",
number="2",
month="January",
pages="393--397",
publisher="Springer India",
issn="0972-2815"
}