Influence of tool geometry in friction stir welding

被引：73
|
作者：
Kumar, K. [1 ]
Kailas, Satish V. [1 ]
Srivatsan, T. S. [2 ]
机构：
[1] Indian Inst Sci, Dept Mech Engn, Bangalore 560012, Karnataka, India
[2] Univ Akron, Dept Mech Engn, Akron, OH 44325 USA
来源：
MATERIALS AND MANUFACTURING PROCESSES | 2008年 / 23卷 / 02期
关键词：
aluminum alloys; butt joints; defects; fracture characteristics; friction stir welding; grain growth; heat affected zone; heat input; mechanical properties; microstructure; over-ageing; precipitation hardening; trans weld tensile testing; tool geometry; weld base material interfaces;
D O I：
10.1080/10426910701774734
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this article we highlight the results of a recent study undertaken to understand the influence of tool geometry on friction stir welding (FSW) of an aluminum alloy with specific reference to microstructural development, defect formation, and mechanical response. The welding trials were made on 4.4mm thick sheets using tools made of die steel and having different diameters of the shoulder and the pin, and the profile of the pin. Throughout the welding operation, the rotational speed, traverse speed, and tool axial tilt were held constant at 1400rpm, 80mm/minute, and 0 degrees, respectively. For a shoulder diameter of 20mm and a pin diameter of 6mm, the severity of defects in the weld was found to be the least and the resultant tensile strength of the weld was high. For the welds that were made using a tool having a shoulder diameter of 10mm and a pin diameter of 3mm the tensile strength of the weld was the least since the degree of defects observed were higher.
引用
收藏
页码：189 / 195
页数：7
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