Effect of welding condition on tensile strength of dissimilar friction stir spot welds between different aluminium alloys
- Tozaki Y. ,
- Uematsu Y. and
- Tokaji K.
- Tozaki Y. ,
- Uematsu Y. and
- Tokaji K.
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Description
The effect of welding conditions (tool rotational speed and tool holding time) on static strength was studied for dissimilar friction stir spot welds between 2017-T6 (Al, 3.5-4.5%Cu, 0.8-1.5%Mg) and 5052 (Al, 2.2-2.8%Mg) aluminium alloy sheets (thickness 1 mm), and the fracture mechanisms were explored based on experimental observation of the weld zone. Three tool rotational speeds (1000,1500, 2000 rpm) and six holding times (0.2, 1, 3, 5, 9, 13 s) were evaluated under a fixed tool geometry. Tensile shear and cross tension tests were performed using lap-shear and cross-tension specimens, respectively. The occurrence of different fracture modes such as nugget shear fracture, shear fracture/tensile fracture mixed mode, debonding and pull-out fracture is discussed.
6th International Symposium, 10-13 Oct 2006, Session 6B: Friction Stir Spot Welding, Paper 04
Subjects
- Friction welding
- Welding
- Process
- Friction stir spot welding
- Strength
- Mechanical properties
- Properties
- Ultimate tensile strength
- Process conditions
- Aluminium and Al alloys
- Nonferrous
- Material
- 2xxx Al series
- 5xxx Al series
- Dissimilar materials
- Weld zone
- Weld
- Dynamically recrystallised zone
- Shear strength
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