Effect of laser welding speed on pore formation in AA 6061 T6 alloy

Emine Gündoğdu İ., Topuz P., Akman E., Yilmaz M.

MATERIALS TESTING, cilt.62, sa.10, ss.979-984, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 62 Sayı: 10
  • Basım Tarihi: 2020
  • Doi Numarası: 10.3139/120.111573
  • Dergi Adı: MATERIALS TESTING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex
  • Sayfa Sayıları: ss.979-984
  • Anahtar Kelimeler: Al 6001 T6 alloy, laser welding, pores, welding speed, MECHANICAL-PROPERTIES, ALUMINUM-ALLOY, HEAT-TREATMENT, MICROSTRUCTURE, GAS, STRENGTH, QUALITY
  • Kocaeli Üniversitesi Adresli: Evet

Özet

In this study, 6 mm thick plates of Al 6061 T6 alloy are joined by laser welding at four welding speeds (40 mm x s(-1), 35 mm x s(-1), 25 mm x s(-1), and 20 mm x s(-1)). The welded joints are made using a 4000 W fiber laser welding machine. The effect of laser welding speed on the pores formed in the weld seam was investigated. In this manner, it was found that with a change in laser welding speed the amount of pores formed in the structure also changed. In addition, after the welding process, macroscopic examinations, tensile tests and the hardness tests were made. As a result of the experiments performed, it was determined that, the laser welding speed was highly effective for pore formation.