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Rolling-contact deformation of MgO single crystalsMagnesium oxide single crystals were used as a model bearing material and deformed by rolling contact with a steel ball 0.64 cm in diameter. A dependence of depth of slip on rolling velocity which persisted with increasing numbers of rolling-contact cycles was discovered. The track width, track hardness and dislocation interactions as observed by transmission electron microscopy all increased in a consistent manner with increasing cycles. The rolling-contact state of stress produces a high density of dislocations in a localized zone. Dislocation interaction in this zone produces cleavage-type cracks after a large number of rolling-contact cycles. The orientation of the crystal influences the character of dislocation accumulation.
Document ID
19760044781
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Dufrane, K. F.
(Battelle Columbus Labs. OH, United States)
Glaeser, W. A.
(Battelle Columbus Laboratories Columbus, Ohio, United States)
Date Acquired
August 8, 2013
Publication Date
April 1, 1976
Publication Information
Publication: Wear
Volume: 37
Subject Category
Mechanical Engineering
Accession Number
76A27747
Funding Number(s)
CONTRACT_GRANT: NAS3-6263
Distribution Limits
Public
Copyright
Other

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