O. B. Neumark, O. A. Plekhov, V. I. Betekhtin, A. G. Kadomtsev, M. V. Narykova, “Kinetics of defect accumulation and duality of the Weller curve in gigacycle fatigue of metals”, Zhurnal Tekhnicheskoi Fiziki, 2014, Volume 84, Issue 3,Pages <nobr>89

This article is cited in 9 papers

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Kinetics of defect accumulation and duality of the Weller curve in gigacycle fatigue of metals

O. B. Neumark^a, O. A. Plekhov^a, V. I. Betekhtin^b, A. G. Kadomtsev^b, M. V. Narykova^b

^a Institute of Continuous Media Mechanics UB RAS, Perm
^b Ioffe Institute, St. Petersburg

Abstract: We propose a model describing the kinetics of accumulation of defects under cyclic loading in metals. Analysis of experimental data on the initial defect distribution and of the role of the free surface of the sample in straining makes it possible to explain the features of generation of fatigue cracks in the bulk, which is typical of the gigacycle fatigue regime at a low stress level. The duality of the Weller curve in the gigacycle fatigue regime is attributed to the emergence of a fine-grain region in the form of a dissipative peaking structure in the defect ensemble.

Received: 30.05.2013