FRICTION WELDING OF ST-AL AND AL-CU MATERIALS

The present study investigates the mechanical and metallurgical proper ties of friction-welded steel-aluminium and aluminium-copper bars, a f riction welder having been designed and built for this purpose. The ef fects of the three main parameters: speed of rotation; friction load; and duration of welding; on the metallurgical and mechanical propertie s of the weld such as the yield, tensile and breaking strengths, are s tudied experimentally and statistically. The metallurgical properties of the weld are examined using electron and optical microscopy.