A Modified Friction Stir Welding Process Based on Vortex Material Flow

Xiaochao Liu, Yunqian Zhen, Zhikang Shen, Haiyan Chen, Wenya Li, Wei Guo, Zhufeng Yue

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Friction stir welding is a promising solid-state welding technique. However, the issue of tool wear and break restricts its wider industrial application. To avoid the tool wear and break occurring in conventional friction stir welding (FSW), a new modification of the FSW process using a tool made by the identical material as the workpiece has been developed and conducted on pure aluminum. We named this process as Vortex-FSW (VFSW) because it depends on a vortex material flow to realize the welding and joining. The weld macro- and micro-structures are like that in conventional FSW. However, the tool exit-hole in conventional FSW is replaced by a lug boss. The mechanical properties are also equivalent to that in conventional FSW. The principle of this new process is introduced in this paper.

Original languageEnglish
Article number90
JournalChinese Journal of Mechanical Engineering (English Edition)
Volume33
Issue number1
DOIs
StatePublished - Dec 2020

Keywords

  • Friction stir welding
  • Microstructure
  • Tool materials
  • Viscous dissipation
  • Vortex material flow

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