Abstract
A variant of the friction stir welding technique developed at TWI, called Skew-stir (tradename) was applied to the welding of lap joints in Al alloy AA5083-0. This technique differs from the conventional method in that the axis of the tool is given a slight inclination, or skew, to that of the machine spindle. It is particularly advantageous in instances where a wide weld region is required, such as lap joints In which the interface is perpendicular to the machine axis. The microstructures and mechanical properties of welds made using both a conventional pin type probe and the rotary Skew-stir technique with an A-Skew (tradename) probe were studied. The joints made using the Skew-stir technique sustained significantly higher tensile loads and had longer fatigue lives compared with those made using the conventional pin type probe.
Original language | English |
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Pages (from-to) | 268-280 |
Number of pages | 13 |
Journal | Science and Technology of Welding and Joining |
Volume | 10 |
Issue number | 3 |
DOIs | |
State | Published - Jun 2005 |
Keywords
- Aluminium
- Fatigue properties
- Friction stir welding
- Hardness
- Microstructure
- Skew-stir
- Tensile properties