Welding of Inconel 625 Using a Direct Diode Laser

Abstract:

In this study, a high power direct diode laser (HPDDL), with a rectangular laser beam spot, was used for conduction mode welding of Inconel 625 sheets (0.8 mm thick). The influence of laser butt welding parameters on weld quality and mechanical properties of test joints was studied. The quality and mechanical properties of the joints were determined by means of tensile and bending tests, and micro hardness tests, and also metallographic examinations. The minimum heat input required to achieve full penetration butt welded joints was found to be 60 J/mm. The joints exhibited comparable yield and about 15 % lower ultimate tensile strength when compared with that of the base metal.

• Periodical: Advanced Materials Research (Volume 1036)
• Pages: 331-336
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1036.331
• Online since: October 2014
• Authors: Damian Janicki*
• Keywords: Butt Joint, Conduction Mode, High Power Direct Diode Laser, Inconel 625, Laser Welding, Nickel-Based Superalloy

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