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      A study of white etching crack formation by compression-torsion experiments

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      Frattura ed Integrità Strutturale
      Gruppo Italiano Frattura
      White Etching Cracks, Multiaxial fatigue, Bearing steel

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          Abstract

          In this study, an attempt was made to recreate the bearing damage phenomenon “White Etching Cracks” with a simplified testing setup. Rolling contact fatigue conditions were simulated with in-phase and out-ofphase cyclic compression-torsion experiments on 100Cr6 steel specimens. The results are compared in terms of microstructural change. Focused Ion Beam and metallographic analysis reveal that a fine-grained, white etching zone formed in the vicinity of the fatigue cracks of specimens tested with the in-phase load pattern. In contrast, no such structures were found after testing the out-of-phase load pattern. The properties of the white etching zone are characterised in more detail and compared with White Etching Cracks. KEYWORDS. White Etching Cracks; Multiaxial fatigue; Bearing steel.

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          Most cited references3

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          Multiaxial fatigue: An overview and some approximation models for life estimation

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            Formation of white-etching layers on rail treads

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              White etching crack (WEC) investigation by serial sectioning, focused ion beam and 3-D crack modelling

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                Author and article information

                Journal
                Frattura ed Integrità Strutturale
                Gruppo Italiano Frattura
                01 October 2016
                : 10
                : 38
                Article
                e4f907594b094108ae354272e5f0c501
                6e58ccf3-eb0e-45a6-9e3d-3c32e5392002

                This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

                Categories
                Mechanical engineering and machinery
                TJ1-1570
                Structural engineering (General)
                TA630-695

                Materials technology,Materials properties,Materials characterization,Engineering,Civil engineering,Mechanical engineering
                Multiaxial fatigue,White Etching Cracks,Bearing steel

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