Rolling contact fatigue in martensitic 100Cr6: subsurface hardening and crack formation
Rolling contact fatigue in martensitic 100Cr6: subsurface hardening and crack formation
Rolling contact fatigue tests on 100Cr6 steel were carried out with a ball-on-rod tester. Microstructural damage was manifested by gradual hardness changes under the subsurface, and microcracks formed adjacent to inclusions; both being evidence of plastic deformation. The hardness increase appears to be due to the development of residual stress, while the microcracks form as a result of the concentration of stress around inclusions. The microcrack orientation is suggested to be affected by the stress state, depending on the degree of residual stresses generated. The residual stress development may be a key factor for optimising the bearing element testing methods, by considering its influence on the damage morphology.
Fatigue, Hardening, Hardness measurement, Light microscopy, Martensite, Steel
328-333
Kang, Jee Hyun
37fdbf69-688f-436b-b668-9bc3e5b2094c
Vegter, R.H.
e4bb4b26-c085-4ca9-a4f0-9f21faad750b
Rivera-Díaz-del-Castillo, Pedro E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
23 June 2014
Kang, Jee Hyun
37fdbf69-688f-436b-b668-9bc3e5b2094c
Vegter, R.H.
e4bb4b26-c085-4ca9-a4f0-9f21faad750b
Rivera-Díaz-del-Castillo, Pedro E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
Kang, Jee Hyun, Vegter, R.H. and Rivera-Díaz-del-Castillo, Pedro E.J.
(2014)
Rolling contact fatigue in martensitic 100Cr6: subsurface hardening and crack formation.
Materials Science and Engineering: A, 607, .
(doi:10.1016/j.msea.2014.03.143).
Abstract
Rolling contact fatigue tests on 100Cr6 steel were carried out with a ball-on-rod tester. Microstructural damage was manifested by gradual hardness changes under the subsurface, and microcracks formed adjacent to inclusions; both being evidence of plastic deformation. The hardness increase appears to be due to the development of residual stress, while the microcracks form as a result of the concentration of stress around inclusions. The microcrack orientation is suggested to be affected by the stress state, depending on the degree of residual stresses generated. The residual stress development may be a key factor for optimising the bearing element testing methods, by considering its influence on the damage morphology.
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Accepted/In Press date: 28 March 2014
e-pub ahead of print date: 12 April 2014
Published date: 23 June 2014
Keywords:
Fatigue, Hardening, Hardness measurement, Light microscopy, Martensite, Steel
Identifiers
Local EPrints ID: 492531
URI: http://eprints.soton.ac.uk/id/eprint/492531
ISSN: 0921-5093
PURE UUID: 726d9eb9-b85f-4439-9c08-766006ef2621
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Date deposited: 30 Jul 2024 17:18
Last modified: 31 Jul 2024 02:07
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Contributors
Author:
Jee Hyun Kang
Author:
R.H. Vegter
Author:
Pedro E.J. Rivera-Díaz-del-Castillo
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