Microstructure and mechanical performance of FSWed joint of T2 copper and AA 1061

Hongjun Li, Xinchen Qu, Jian Gao, Gihad Karrar, Athanasios Toumpis, Alexander Galloway

Research output: Contribution to journalArticlepeer-review

Abstract

Welding of copper and aluminium has been problematic with tradition fusion method. The friction stir welding (FSW) was employed to butt weld the T2 copper and 1061 aluminium alloy plates. The welding parameters were planned by the orthogonal experiment design method. The samples obtained in experiments were investigated in the aspects of microstructure, tensile strength, fatigue performance and micro-hardness. Sound weld with the best tensile strength and fatigue life was produced under the welding parameters of rotation speed, 1100 rpm and welding speed 50 mm min −1. The tensile strength was 193.16 MPa, 85% of the base aluminium material. Three intermetallic compounds of CuAl, Cu 3Al and Cu 9Al 4 were detected at the copper–aluminium interface in X-ray diffraction analysis.

Original languageEnglish
Pages (from-to)91-98
Number of pages8
JournalScience and Technology of Welding and Joining
Volume26
Issue number2
Early online date28 Oct 2020
DOIs
Publication statusPublished - 1 Feb 2021

Keywords

  • friction stir welding
  • welding parameters
  • T2 Copper
  • AA 1061
  • microstructure
  • mechanical performance

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