Repairing of exit-hole in dissimilar Al-Mg friction stir welding: process and microstructural pattern

Research output: Contribution to journalArticleScientificpeer-review


Research units

  • Department of Mechanical Engineering, School of Technology, Pandit Deendayal Petroleum University, Raisan, Gandhinagar
  • Department of Mechanical Engineering, Wichita state university, Wichita
  • Pandit Deendayal Petroleum University
  • Shankersinh Vaghela Bapu Institute of Technology


The exit-hole is one major discontinuities in the friction based processes, where all the volume of the tool’s probe is missing with a depth that corresponds to the full thickness of the processed component. This letter presents a new technique to repair the exit-hole of an Al-Mg friction stir welding, without any third body material with inexpensive probeless tooling, inducing forging, stirring, and thermomechanical consolidation of the local spot joint. Intercalated banned type structures with interpenetrating features were achieved. Composite type mixed structure was obtained at repaired zone with a local tensile strength of 159 MPa.


Original languageEnglish
Pages (from-to)67-70
Number of pages4
JournalManufacturing Letters
Early online date8 Jan 2020
Publication statusPublished - 2020
MoE publication typeA1 Journal article-refereed

    Research areas

  • exit-hole, friction stir welding, microstructure, repairing, welding

ID: 40301685