期刊
TRIBOLOGY INTERNATIONAL
卷 44, 期 9, 页码 971-979出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2011.03.029
关键词
Friction; Surface roughness; Crack initiation; Crack propagation
资金
- BlueScope Steel Metallurgy Centre
Experimental investigation and mechanical analysis have been carried out to study the edge crack formation during cold strip rolling using Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM). The effects of friction and surface roughness on edge crack initiation and growth rate have been discussed. Friction leads to an increase in fracture loads and decreasing the friction coefficient is effective in preventing the microcracks. Surface roughness variation along the strip width contributes to stress distribution and inhibits crack nucleation. The findings reveal that the behaviour of crack evolution is influenced by fracture surface roughness as well as rolling friction. (C) 2011 Elsevier Ltd. All rights reserved.
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