The aim of the present research is to study how the interface structure is affected by FSW parameters and how the formation of interface structure affects fracture of Al-Steel and Al-Ti FSL welds. | Microstructure and fracture behavior of friction stir lap welding of dissimilar metals Engineering Solid Mechanics 2018 1-10 Contents lists available at GrowingScience Engineering Solid Mechanics homepage esm Microstructure and fracture behavior of friction stir lap welding of dissimilar metals . Shubhavardhana and S. Surendranb a Department of Mechanical Engineering University of Saskatchewan Saskatoon Canada b Department of Ocean Engineering Indian Institute of Technology Madras Chennai India A R T I C L EI N F O ABSTRACT Article history Friction Stir Welding FSW is a relatively new solid state joining technique which is used not Received 26 August 2017 only for joining the aluminum and its alloys but also has potential for joining dissimilar Accepted 9 December 2017 materials with very different physical and mechanical properties which are hard to weld using Available online conventional fusion welding processes. Tensile shear testing is used to determine the 9 December 2017 Keywords Mechanical strength of friction stir lap FSL welds under static loading fracture strength Friction stir lap welding σLap corresponding to the maximum load in a test over the sample width is widely used as Aluminum the strength value. During friction stir lap welding FSLW of dissimilar metals with large Steel differences in melting temperatures a metallurgical bond is established through the formation Titanium of interfacial intermetallic compounds. However as these intermetallic compounds are Intermetallics generally believed to be brittle with little ductility they are generally considered to have Fracture strength detrimental effect on fracture strength. The aim of the present research is to study how the interface structure is affected by FSW parameters and how the formation of interface structure affects fracture of Al-Steel and Al-Ti FSL welds. 2018 by the authors licensee Growing Science Canada. 1. Introduction Friction stir lap welding of .
