Formation of oxide under rolling contact fatigue
Formation of oxide under rolling contact fatigue
Rolling contact fatigue (RCF) of a variety of bearing steels was studied with a ball-on-rod configuration rig. Systematic sectioning of the specimens across the spalls revealed the presence of oxide near the cracks. Further characterisation of this phase using electron microscopy revealed that it was formed during testing, after crack initiation. It is highlighted that the discovered oxide could, in some cases, be mistaken for a non-metallic inclusion. The authors suggest that attributing RCF failure initiation to non-metallic inclusions should not only rely on optical microscopy but also on EDX measurements, as this reveals a composition inconsistent with non-metallic inclusions. A mechanism for the in situ formation of the oxide is suggested and its possible role on failure is discussed.
Bearing, Failures, Oxidative degradation, Rolling contact
262-266
Guetard, G.
1bb8bf6a-c50f-40fd-8fd8-0ac1b90e8cb7
Rivera-Díaz-Del-Castillo, P.E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
7 December 2015
Guetard, G.
1bb8bf6a-c50f-40fd-8fd8-0ac1b90e8cb7
Rivera-Díaz-Del-Castillo, P.E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
Guetard, G. and Rivera-Díaz-Del-Castillo, P.E.J.
(2015)
Formation of oxide under rolling contact fatigue.
Tribology International, 95, .
(doi:10.1016/j.triboint.2015.11.030).
Abstract
Rolling contact fatigue (RCF) of a variety of bearing steels was studied with a ball-on-rod configuration rig. Systematic sectioning of the specimens across the spalls revealed the presence of oxide near the cracks. Further characterisation of this phase using electron microscopy revealed that it was formed during testing, after crack initiation. It is highlighted that the discovered oxide could, in some cases, be mistaken for a non-metallic inclusion. The authors suggest that attributing RCF failure initiation to non-metallic inclusions should not only rely on optical microscopy but also on EDX measurements, as this reveals a composition inconsistent with non-metallic inclusions. A mechanism for the in situ formation of the oxide is suggested and its possible role on failure is discussed.
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Accepted/In Press date: 22 November 2015
e-pub ahead of print date: 28 November 2015
Published date: 7 December 2015
Keywords:
Bearing, Failures, Oxidative degradation, Rolling contact
Identifiers
Local EPrints ID: 492420
URI: http://eprints.soton.ac.uk/id/eprint/492420
ISSN: 0301-679X
PURE UUID: ed2d1f1f-ed25-413a-b313-00b27f8a43cd
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Date deposited: 26 Jul 2024 16:36
Last modified: 27 Jul 2024 02:08
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Author:
G. Guetard
Author:
P.E.J. Rivera-Díaz-Del-Castillo
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