POSTER
Microstructural study of a heterogeneous friction weld of stainless steel to aluminum alloy
By Djaafar Aboudi (University of Science and Technology Houari Boumediene), Ahmed Mebtouche (Research Center in Industrial Technologies CRTI-Algeria ), Mohamed Oubelkacem Azzoug (University of Science and Technology Houari Boumediene), Samir Mansour (University of Science and Technology Houari Boumediene)

The study aims at the characterization of a heterogeneous joining stainless steel to aluminum alloy performed by rotary friction welding. Usually, in this kind of welding the forging occurs at the last stage of the process, called a direct cycle. While, in this study the forging is applied in two stages, in the rotary motion and statical movement of parts to solder, it is then called combined cycle. The microstructural properties of welded samples interfaces were examined by electron microscopy associate to the energy dispersive spectrometry (EDS) and X-ray diffraction analysis. Some intermetallic phases occurred at the very fine and homogenous interface.