Improvement in the r-value of aluminum sheets by differential-friction rolling

被引：44
|
作者：
Utsunomiya, H. [1 ]
Ueno, T. [1 ]
Sakai, T. [1 ]
机构：
[1] Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Osaka, Japan
来源：
SCRIPTA MATERIALIA | 2007年 / 57卷 / 12期
关键词：
asymmetric rolling; shear texture; lankford value; differential-speed rolling;
D O I：
10.1016/j.scriptamat.2007.08.024
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Differential-speed rolling can improve the formability of aluminum alloys through the formation of shear texture. The authors propose an alternative asymmetric rolling method. The asymmetry is achieved by differentiating the friction on the upper interface from that on the lower interface. A commercial aluminum sheet in which one surface was coated with PTFE was rolled. The shear strain introduced was comparable to that introduced by differential-speed rolling. The annealed sheet showed a higher r-value than the symmetrically rolled sheet. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1109 / 1112
页数：4
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