Study of 3D laser cladding for Ni85Al15 superalloy

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Abstract

Conditions of successful 3D laser cladding for Ni based superalloy were studied. A high power Yb-YAG laser was used to create a molten pool on a stainless steel substrate into which Ni85Al15 powder stream was delivered to create 3D samples. The effect of different laser parameters on the structure and the intermetallic phase content of the manufactured samples were explored by optical metallography, microhardness, SEM, X-ray, and EDX analysis. The cladding of the Ni3A1 coating with small dilution into substrate can be obtained at the appropriate power density of about 2-8 J/mm2 under the laser scan velocity of 100-200 mm/min and the powder feed rate ∼ 3.8 g/min.

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Kotoban, D., Grigoriev, S., & Shishkovsky, I. (2014). Study of 3D laser cladding for Ni85Al15 superalloy. In Physics Procedia (Vol. 56, pp. 262–268). Elsevier B.V. https://doi.org/10.1016/j.phpro.2014.08.170

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