Friction Stir Welding of Aluminium Based Composites Reinforced with Al2O3 Particles
This paper presents the results of microstructural and mechanical characterization of Friction Stir Welding joints of two aluminum-based particles reinforced composites. The composites were FSW in the extruded and T6 heat treated condition. No post-weld heat treatment was carried out on the FSW joints. Hardness, tensile, low-cycle fatigue and impact tests were carried out. Microstructural and fractographic characterization were performed both on the base and FSW material, in order to investigate the effect of the solid-state welding process on the reinforcement particles and aluminum matrix. The FSW produced high quality joints with good microstructural characteristics: the welded zone displayed a refinement of the Al matrix grain size and reinforcement particles, and a better particle distribution. The FSW specimens showed high efficiency, both in the tensile, impact and fatigue tests.
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
L. Ceschini et al., "Friction Stir Welding of Aluminium Based Composites Reinforced with Al2O3 Particles ", Materials Science Forum, Vols. 638-642, pp. 87-92, 2010