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

Author:

Gündoğdu İş Emine1,Akman Erhan1,Yilmaz Muharrem1,Topuz Polat1

Affiliation:

1. Gedik Vocational School İstanbul Gedik University Sülüntepe Neighborhood. Yunus Emre St. No. 1/1, Seyhli-Pendik-İstanbul - Turkey

Abstract

Abstract In this study, 6 mm thick plates of Al 6061 T6 alloy are joined by laser welding at four welding speeds (40 mm × s-1, 35 mm × s-1, 25 mm × s-1, and 20 mm × 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.

Publisher

Walter de Gruyter GmbH

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

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