期刊
SCRIPTA MATERIALIA
卷 114, 期 -, 页码 13-16出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2015.11.023
关键词
Carbide-free bainitic steel; Rolling contact fatigue; Nanocrystalline; Inclusion
类别
资金
- NNSF [51471146]
- NSF of Hebei [E2013203258]
- RPCST of Hebei [QN2015100]
A novel microstructure caused by rolling contact fatigue has been observed in a carbide-free bainitic medium carbon steel. The microstructure is associated with localized non-uniform deformation, and is in the form of vortices of plastic deformation centred on non-metallic inclusions in the vicinity of the contact surface. The resulting severe plastic deformation led to the formation of nanocrystalline material, where fatigue cracks initiated and propagated along the upper edge of the nanocrystalline area. (C) 2015 Elsevier Ltd. All rights reserved.
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