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Influence of interlayer dwell time on the microstructure of Inconel 718 Laser Cladded components

Abstract : Laser Cladding is one of the leading additive manufacturing technologies enabling the repair of metallic components. Their fatigue reliability depends directly on the material microstructure and consequently on the process parameters. This study highlights the influence of the interlayer dwell time on single-track walls for Inconel 718 repaired components. EBSD analyses show that dwell time both reduces grain size and creates a textural stretch of the microstructure. An optimal dwell time between the writing of successive layers can then be introduced to target a specified microstruc-ture gradient at the interface between the original part and the repaired deposit.
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Submitted on : Tuesday, March 24, 2020 - 4:31:14 PM
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Camille Guévenoux, Simon Hallais, Alexandre Charles, Eric Charkaluk, Andrei Constantinescu. Influence of interlayer dwell time on the microstructure of Inconel 718 Laser Cladded components. Optics and Laser Technology, Elsevier, 2020, 128, pp.106218. ⟨10.1016/j.optlastec.2020.106218⟩. ⟨hal-02517596⟩

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