Ageing Behavior of Friction Stir Welding AA7075-T6 Aluminum Alloy

摘要

The microstructures of FSWs in age-hardening 7075-T6 aluminum alloy have been characterized by scanning electron microscopy. Different planes of section, in addition to the more conventional transverse section, have been used to examine the different microstructural zones present in FSWs. Tensile testing has been employed to examine the natural and artificial ageing response of the FSWs, several months after welding. The ageing response of the alloys has been related to the thermal cycle experienced during the welding operation.