Modified Friction Stir Welding of Al–Zn–Mg–Cu Aluminum Alloy

A. A. Alkhalaf*, Anna Tesleva, Pavel Polyakov, Matthias Moschinger, Sebastian Fritsche, Iuliia Morozova, Anton Naumov, Fedor Isupov, Goncalo Filipe Pina Cipriano, S. T. Amancio-Filho

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter


Friction Stir Welding (FSW) is adopted to join the Al-Zn-Mg-Cu (7xxx) aluminum alloys in order to improve strength and ductility of the joints. The paper presents an investigation on the effect of the modified FSW methods such as Impulse FSW (IFSW) and High-Speed FSW (HS-FSW) on the microstructure and mechanical properties of the AA7075 T6 aluminum alloy. It was demonstrated that the tensile properties and hardness of the IFSW joints could be improved compared to the traditional FSW joints by variation of the impulse parameters (force and frequency). This enhancement is caused by microstructural changes. The brittle fracture of the HS-FSW joints is explained by the presence of defects in the weld zone. It indicates that heat input was insufficient or intermixing in the stir zone was inadequate.
Original languageEnglish
Title of host publicationFriction Stir Welding and Processing XI
PublisherSpringer, Cham
Number of pages9
ISBN (Electronic)978-3-030-65265-4
ISBN (Print)978-3-030-65264-7
Publication statusPublished - 2021

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696


  • Al–Zn–Mg–Cu aluminium alloy
  • Friction stir welding
  • Impulse friction stir welding
  • High-speed friction stir welding

Fields of Expertise

  • Advanced Materials Science

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