Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Rolling contact fatigue in martensitic 100Cr6
T2 - Subsurface hardening and crack formation
AU - Kang, Jee Hyun
AU - Vegter, R. H.
AU - Rivera-Díaz-del-Castillo, Pedro E.J.
PY - 2014/6/23
Y1 - 2014/6/23
N2 - 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.
AB - 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.
KW - Fatigue
KW - Hardening
KW - Hardness measurement
KW - Light microscopy
KW - Martensite
KW - Steel
U2 - 10.1016/j.msea.2014.03.143
DO - 10.1016/j.msea.2014.03.143
M3 - Journal article
AN - SCOPUS:84899070344
VL - 607
SP - 328
EP - 333
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
SN - 0921-5093
ER -