Investigations on the Fatigue Behavior of Nanocrystalline Metals

Abstract:

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In this paper data on fatigue lifetime of nanocrystalline (nc) Ni samples is presented. The nc-Ni samples show high lifetimes and can resist large stress amplitudes. Furthermore a new method to determine the fatigue limit based on a Fourier analysis [7] is presented. First results of a load increase test suggest strong parallels to thermal and resistive measurements which can be used to determine the fatigue limit. Microstructural investigations on as received and failed samples show a strong increase in grain size induced by the cyclic loading. The processes behind this are not understood so far and will be investigated in the future.

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Periodical:

Edited by:

Pavel Šandera

Pages:

207-210

DOI:

10.4028/www.scientific.net/KEM.465.207

Citation:

M. Funk and C. Eberl, "Investigations on the Fatigue Behavior of Nanocrystalline Metals", Key Engineering Materials, Vol. 465, pp. 207-210, 2011

Online since:

January 2011

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$35.00

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