Rolling contact fatigue in martensitic 100Cr6:Subsurface hardening and crack formation

Kang, Jee Hyun and 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. pp. 328-333. ISSN 0921-5093

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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.

Item Type:
Journal Article
Journal or Publication Title:
Materials Science and Engineering: A
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2210
Subjects:
ID Code:
125569
Deposited By:
Deposited On:
25 May 2018 13:20
Refereed?:
Yes
Published?:
Published
Last Modified:
09 Sep 2020 04:57