Fiber laser welding of nickel based superalloy Inconel 625

Damian M. Janicki

doi:10.1117/12.2013430

22 January 2013 Fiber laser welding of nickel based superalloy Inconel 625

Damian M. Janicki

Proceedings Volume 8703, Laser Technology 2012: Applications of Lasers; 87030R (2013) https://doi.org/10.1117/12.2013430
Event: Tenth Symposium on Laser Technology, 2012, Szczecin, Poland

Abstract

The paper describes the application of single mode high power fiber laser (HPFL) for the welding of nickel based superalloy Inconel 625. Butt joints of Inconel 625 sheets 0,8 mm thick were laser welded without an additional material. The influence of laser 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 results showed that a proper selection of laser welding parameters provides non-porous, fully-penetrated welds with the aspect ratio up to 2.0. The minimum heat input required to achieve full penetration butt welded joints with no defect was found to be 6 J/mm. The yield strength and ultimate tensile strength of the joints are essentially equivalent to that for the base material.

Citation Download Citation

Damian M. Janicki "Fiber laser welding of nickel based superalloy Inconel 625 ", Proc. SPIE 8703, Laser Technology 2012: Applications of Lasers, 87030R (22 January 2013); https://doi.org/10.1117/12.2013430

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