Examination of the Tensile Deformation Resistance and Ductility of Friction Stir Processed Al-Cu 2218 Alloy at Elevated Temperatures

被引：3
作者：
Chen, Ssu-Ta [1 ]
Lui, Truan-Sheng [1 ]
Chen, Li-Hui [1 ]
机构：
[1] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 70101, Taiwan
来源：
MATERIALS TRANSACTIONS | 2010年 / 51卷 / 08期
关键词：
friction stir process; microstructural homogeneity; tensile ductility; grain boundary sliding; ALUMINUM; PRECIPITATION; STABILITY; PROPERTY; WELDS;
D O I：
10.2320/matertrans.M2010111
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Tensile properties dependence of elevated testing temperatures (100 degrees C similar to 450 degrees C) on as extruded and as friction stir processed Al-Cu 2218 alloy were investigated. The tensile deformation resistance of an as friction stir processed sample is higher than an as extruded one as increased testing temperature up to 300 degrees C and this is a consequence of natural aging effect. However, the tensile deformation resistance decreased evidently as the testing temperature raised to 400 degrees C similar to 450 degrees C, meanwhile there was a concomitant improvement of tensile ductility due to a homogeneously grain refinement which facilitated a pronounced grain boundary sliding in this temperature range. [doi:10.2320/matertrans.M20101]
引用
收藏
页码：1474 / 1480
页数：7
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