Abstract
Copper is very difficult to be spot welded with conventional fusion-welding techniques due to a high thermal diffusivity. Friction- stir spot welding (FSSW) is a novel solid-state welding process, suitable and effective for spot welding copper. Commercially pure copper sheets of 3 mm thickness were spot welded using an industrial friction-stir welding machine. The spot welds were made by varying the tool rotational speed at three levels. The spot welds were characterized using light microscopy. The shear-fracture load was evaluated using a computerized tensile-testing machine. The results revealed that the tool rotational speed remarkably influenced the microstructure, the shear-fracture load and the mode of fracture.
| Original language | English |
|---|---|
| Pages (from-to) | 791-796 |
| Number of pages | 6 |
| Journal | Materiali in Tehnologije |
| Volume | 50 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2016 |
Keywords
- Copper
- Friction-stir spot welding
- Microstructure
- Shear load
ASJC Scopus subject areas
- Polymers and Plastics
- Metals and Alloys