Aluminum 6060-T6 friction stir welded butt joints: fatigue resistance with different tools and feed rates

被引:19
作者
Baragetti, S. [1 ,2 ]
D'Urso, G. [1 ]
机构
[1] Univ Bergamo, Dept Engn, I-24044 Dalmine, BG, Italy
[2] Univ Bergamo, Ctr Innovat Management & Technol Transfer, I-24129 Bergamo, Italy
关键词
Aluminum alloys; Friction stir welding; Joints microstructure; Static and Fatigue resistance; RESIDUAL-STRESSES; MECHANICAL-PROPERTIES; CRACK-PROPAGATION; PROCESS PARAMETERS; WELDING PROCESSES; ALLOY JOINTS; FSW PROCESS; BEHAVIOR; TEXTURE; TENSILE;
D O I
10.1007/s12206-013-1152-1
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The fatigue behavior of AA6060-T6 friction stir welded butt joints was investigated. The joints were produced by using both a standard and a threaded tri-flute cylindrical-tool with flat shoulder. The friction stir welding process was carried out using different feed rates. Preliminary tensile tests, micrograph analyses and hardness profile measurements across the welds were carried out. Welded and unwelded fatigue samples were tested under axial loading (R = 0.1) with upper limits of 10(4) and 10(5) cycles, using threaded and unthreaded (standard) tools at different feed rates. The best tensile and fatigue performance was obtained using the standard tool at low feed rate.
引用
收藏
页码:867 / 877
页数:11
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