Effects of cross-channel extrusion on microstructure and mechanical properties of AA6061 aluminum alloy

被引：10
作者：
Chou, Cheng-Yu [1 ]
Lee, Sheng-Long [1 ]
Lin, Jing-Chie [1 ]
机构：
[1] Natl Cent Univ, Dept Mech Engn, Inst Mat Sci & Engn, Jhongli 32001, Taoyuan County, Taiwan
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 485卷 / 1-2期
关键词：
cross-channel extrusion; fine-grained material; mechanical properties;
D O I：
10.1016/j.msea.2007.09.035
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The aluminum AA6061 alloy was heavily deformed by the cross-channel extrusion (CCE) process, and the effects of CCE on the microstructure and mechanical properties were investigated in this study. The initial grain size of the AA6061 alloy was about 700 mu m. After extrusion for up to 8 passes at temperatures from 473 K to 573 K, a fine-grained structure was observed with a grain size of 0.2-4 mu m. The higher hardness and tensile strength were obtained from the sample extruded at lower temperature. Moreover, the dispersion was gradually refined with increasing extrusion passes and resulted in an improvement of elongation. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：461 / 467
页数：7
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