Analysis of friction and surface roughness effects on edge crack evolution of thin strip during cold rolling

被引：45

作者：

Xie, H. B. ^{[1
]}

Jiang, Z. Y. ^{[1
]}

Yuen, W. Y. D. ^{[2
]}

机构：

[1] Univ Wollongong, Sch Mech Mat & Methatron Engn, Wollongong, NSW 2522, Australia

[2] BlueScope Steel Ltd, BlueScope Steel Res, Port Kembla, NSW 2505, Australia

来源：

TRIBOLOGY INTERNATIONAL | 2011年 / 44卷 / 09期

关键词：

Friction; Surface roughness; Crack initiation; Crack propagation; STRESS-CONCENTRATION FACTOR; CARBON-STEEL; FRACTURE; GROWTH; MODEL; AFM; DEFORMATION; PROPAGATION; NUCLEATION; MECHANICS;

D O I：

10.1016/j.triboint.2011.03.029

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

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.

引用

页码：971 / 979

页数：9

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