Combined Cycle Fatigue of Ni-Base Superalloy

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Fatigue life of a cast Ni-base superalloy IN 713LC under combined cycle loading consisting of a superposition of low- and high-cycle fatigue at 800 °C was experimentally determined. No measurable effect of combined cycle was found for studied loading conditions. High scatter of fatigue life related to the initiation of cracks on casting defects was observed. Size of the largest defect in a specimen was predicted by the largest extreme value distribution method. The predicted size was compared with fractographic observation of defects resulting in final fatigue failure.

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Periodical:

Edited by:

Pavel Šandera

Pages:

523-526

DOI:

10.4028/www.scientific.net/KEM.465.523

Citation:

L. Kunz et al., "Combined Cycle Fatigue of Ni-Base Superalloy", Key Engineering Materials, Vol. 465, pp. 523-526, 2011

Online since:

January 2011

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$35.00

[1] Information on http: /www. transport-research. info/web/projects/project_details. cfm? id=35365.

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[5] L. Kunz, P. Lukáš, K. Hrbáček, R. Konečná: Combined Cycle Fatigue Behaviour of Ni-base Superalloys and High Temperature. in: Proceedings of the conference Fraktografia – Fractography 2009, Stará Lesná, November 2009, edited by J. Dusza, P. Hvizdoš eds., IMR SAS Košice, 93-101.

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