Tailored blanks characterized by variable thickness were friction stir welded (FSWed) with the aim to obtain constant joint properties along the weld seam, regardless of the thickness change. To pursue this goal, the heat input was kept constant by in-process control of tool rotation. A dedicated numerical model of the process was used to determine the tool rotation values as a function of the sheet thickness. The mechanical properties and the microstructure of the FSWed joints, produced with varying process parameters, were studied. It was found that the proposed approach can produce joints with uniform properties along the weld line in terms of stress–strain curve shape, joint strength, elongation at failure, and microstructure.
Constant Heat Input Friction Stir Welding of Variable Thickness AZ31 Sheets Through In-Process Tool Rotation Control
Manuscript received February 10, 2019; final manuscript received May 20, 2019; published online June 10, 2019. Assoc. Editor: Wayne Cai.
- Views Icon Views
- Share Icon Share
- Cite Icon Cite
- Search Site
Buffa, G., Campanella, D., Forcellese, A., Fratini, L., Simoncini, M., and Barcellona, A. (June 10, 2019). "Constant Heat Input Friction Stir Welding of Variable Thickness AZ31 Sheets Through In-Process Tool Rotation Control." ASME. J. Manuf. Sci. Eng. August 2019; 141(8): 081002. doi: https://doi.org/10.1115/1.4043838
Download citation file:
- Ris (Zotero)
- Reference Manager