Electrical current treatment of 6N01 Al alloy FSW joints

  • Zhimin Liang
  • , Guanying Wang
  • , Yongxian Huang
  • , Zhenzhen Peng
  • , Yongmei Liang*
  • , Dianlong Wang*
  • , Liwei Wang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Studies successfully exploit electric current treatment including electropulsing solution and direct-current (DC) aging to thoroughly substitute post-weld heat treatment and realize artificial controlling of precipitation as well as the improvement of mechanical property in 6N01 Al alloy friction-stir-welding (FSW) joints. Utilizing electropulsing solution, β' can be dissolved completely within 3 s to form super-saturated solid solution. The subsequent DC two-stage aging promotes the formation of high-density βʺ within 5 h and increases the microhardness by 21.8% and strength by about 15%. This study extends perspectives on post-weld treatment of precipitation-hardening Al alloy joints and expand the potential function of artificial controlling of precipitation.

Original languageEnglish
Article number144785
JournalMaterials Science and Engineering: A
Volume868
DOIs
StatePublished - 14 Mar 2023

Keywords

  • Al alloy joints
  • Direct-current aging
  • Electric current treatment
  • Electropulsing solution
  • Mechanical properties
  • Precipitates

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