Fatigue strength of Al interlayer aluminium to titanium friction stir lap welded joints
- Ales S.K. ,
- Chen Z. and
- Yazdanian S.
- Ales S.K. ,
- Chen Z. and
- Yazdanian S.
Links
Repository
Description
Fatigue testing was performed on welds joining AA2024 (AI4.5Cu1.4 Mg0.5Mn) alloy to TI6Al4V alloy by having AA100 strip as an interlayer utilizing friction stir lap welding (FSLW). During FSLW, the pin bottom was aimed not to touching the Ti6Al4V plate, although it could inadvertently penetrate the Al interlayer. The results revealed that the fatigue limit of the AA2024/Ti6Al4V welds slightly lower than the fatigue limits reported in literature for FSL Al-to-Al alloy welds. Analysis indicated that the formation of an extremely thin interface layer during FSLW played a crucial role in enhancing fatigue strength within the grove. The distinct thermomechanical conditions associated with varying diffusion-weld widths will be elucidated. Additionally, incorporating an Al interlayer during FSLW may offer further insights into fatigue behavior and weld performance.
13th International Symposium, 21-23 May 2024, Poster Session, Paper 01
Subjects
- Friction welding
- Welding
- Process
- Friction stir welding
- Nonferrous
- Material
- Titanium and Ti alloys
- Aluminium and Al alloys
- 2xxx Al series
- Dissimilar materials
- Strength
- Mechanical properties
- Properties
- Fatigue strength
- Process procedures
- Thermal properties
- 1xxx Al series
- Process equipment
- Friction stir welding tools
- Weld zone
- Weld
- Dynamically recrystallised zone
- Fatigue
- Fatigue life
- Microstructure
Related Records
