US EPA

1769762 

Journal Article 

Solid State Spot Welding of Lightweight Alloys 

Campanelli, LC; de Alcantara, NG; dos Santos, JF 

2011 

1 

Revista Soldagem & Inspeção
ISSN: 0104-9224
EISSN: 1980-6973 

16 

3 

301-307 

WOS:000312757700011 

The recent concern about climate change has stimulated
research into transport energy efficiency in order to reduce the emission of gases. One of the
main solutions is to reduce the structural weight through the application of new materials, such
as aluminum and magnesium lightweight alloys. However; new applications are often limited by the
difficulty of joining these materials. Friction Stir Welding (FSW) is a solid state joining
technique that emerges as a viable alternative to replace or complement the established joining
technologies. As a continuous weld is not always requested, two spot welding technologies derived
from FSW are under development: Friction Stir Spot Welding (FSSW) and Friction Spot Welding
(FSpW). Besides providing almost defect-free and high strength joints, these techniques exhibit
high energy efficiency short welding cycle, ease of automation and environmental compatibility,
competing against the conventional spot joining techniques, such as Resistance Spot Welding (RSW)
and riveting. 

Lightweight alloys; Solid state joining; Spot welding