Investigations of the Mechanical and Microstructural Effects of Pinless Tool Geometry on Friction Stir Spot Welding Process


GÜLER ÖZGÜL H. , Dedeoglu O.

TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, vol.73, no.9, pp.2281-2289, 2020 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 73 Issue: 9
  • Publication Date: 2020
  • Doi Number: 10.1007/s12666-020-02034-3
  • Title of Journal : TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
  • Page Numbers: pp.2281-2289

Abstract

In this study, mechanical properties, macrostructure and microstructure of the friction stir spot weld joints were investigated under the influence of pinless tool geometry and different rotation speed parameters (1350, 1850 and 2530 rpm) using Al5754 plates. Tensile shear strength tests were carried out for joints of different process parameters, and fracture surfaces were inspected by scanning electron microscopy; in addition, fracture modes of the joints were also evaluated. According to the results, the maximum strength values were obtained at 1850 rpm rotation speed, and ductile and brittle fractures were observed together.