Behavior of Threaded Cylinder tool in the Friction Stir Welding of Al-SiC composite

Friction stir welding, a novel semi-solid state welding process, has been constantly evolving technology since 1991. In this work friction stir welding was carried out on aluminium metal matrix composites reinforced with SiC. The influence of tool profile and material on the strength of weldment was studied. Threaded cylinder tool made of materials such as OHNS, HCHCr, and H13 with varying D/d ratios were used. The friction stir welded specimens were subjected to mechanical and metallurgical characterization. Threaded cylinder profiled tool made of H13 steel with a D/d ratio of 2 yielded weld joints of highest strength. (C) 2019 Elsevier Ltd. All rights reserved.