Effects of different gas mixtures and welding speeds on laser welding of AlMg1SiCu T6 aluminum alloys with filler metal

Gündoäÿdu Iş E., Yä±lmaz M.

Materialpruefung/Materials Testing, vol.67, no.8, pp.1314-1325, 2025 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 67 Issue: 8
  • Publication Date: 2025
  • Doi Number: 10.1515/mt-2024-0315
  • Journal Name: Materialpruefung/Materials Testing
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex
  • Page Numbers: pp.1314-1325
  • Keywords: 4043 filler metal, AlMg1SiCu Al, Ar-He gas composition, laser welding, welding speed
  • Kocaeli University Affiliated: Yes

Abstract

In this study, 6061 T6 aluminum alloy (AlMg1SiCu) was welded using the laser welding method with E Al 4043 (AlSi 5) filler wire. The shielding gas composition and welding parameters were varied, and the joints were welded at different welding speeds. The metallurgical and mechanical properties of the welded joints were analyzed. The results showed that joints welded at the highest speed of 35 m s-1 exhibited the highest tensile strength. Furthermore, it was observed that as the amount of helium in the shielding gas composition increased, the number of pores in the weld seam decreased, while the weld seam width increased.