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

页码：1474 / 1480

页数：7

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