Welding & Metallurgy
Welding and Metallurgy goes beyond the trades to look at the fundamental science underlying metal fabrication and joining. The newly established Canadian Centre for Welding and Joining, located at the University of Alberta, intends to focus on productivity, weldability, automation, and performance. Introducing new processes, procedures, materials, and technologies, researching difficult-to-weld materials such as aged and embrittled alloys, and examining non-destructive testing, corrosion, and fracture issues are some of the areas that will be addressed within the centre.
Friction stir welding, which was originally developed for joining aluminum alloys, is now being applied during the fabrication of a wide range of materials such as magnesium, copper, high-strength low-alloy, and stainless steels, Ni-based superalloys, and titanium alloys. A study by Dr. Adrian Gerlich investigated the microstructural features of friction stir welding, contributing to the fundamental understanding of this relatively new process.
Inverse pole figure map of the thermomechanically-affected zone showing features resulting from material flow during friction stir spot welding of single-crystal aluminum sheet. White dotted lines show boundaries between fine and large grains.