Microstructural Characterization of the Friction Stir Welding (FSW) Joints from Dissimilar Metallic Aluminium - Copper Alloys

摘要

During Friction Stir Welding (FSW) process materials to be joined will be subject of intense mechanical and thermal processes, characteristic to this solid state welding process. As a result, the welded materials will suffer quick heating and cooling cycles that will be overlapping on large plastic deformation/flow of the materials, which will produce their phase and structural transformation as well as modification of their properties. The paper investigates the structural transformation of the materials and will analyse the influence between the FSW process and these transformations.