Mechanical Characteristics of Welded Joints of Aluminum Alloy 6061 T6 Formed by Arc and Friction Stir Welding

被引：0
|
作者：
A. Astarita
A. Squillace
L. Nele
机构：
[1] Engineering University of Naples “Federico II,Department of Chemical, Materials and Industrial Production
[2] ”,undefined
来源：
Metal Science and Heat Treatment | 2016年 / 57卷
关键词：
aluminum alloy; welded joints; heat treatment; tungsten inert gas welding; friction stir welding;
D O I：
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学科分类号：
摘要：
Butt welds formed by arc welding in inert gas with nonconsumable electrode (tungsten inert gas (TIG) welding) and by friction stir welding (FSW) from aluminum alloy AA6061 T6 are studied. Comparative analysis of the structures and mechanical properties of the welded joints is performed using the results of optical and electron microscopy, tensile tests, tests for residual bending ductility, and measurements of microhardness. The changes in the microstructure in different zones and the degrees of degradation of the mechanical properties after the welding are determined. It is shown that the size of the tool for the friction stir welding affects the properties of the welds. Quantitative results showing the relation between the microscopic behavior of the alloy and the welding-induced changes in the microstructure are obtained. Friction stir welding is shown to provide higher properties of the welds.
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页码：564 / 569
页数：5
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