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Open AccessArticle

Combination of Laser Material Deposition and Laser Surface Processes for the Holistic Manufacture of Inconel 718 Components

Department of Mechanical Engineering, University of the Basque Country, Plaza Torres Quevedo 1, Bilbao 48013, Spain
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Materials 2018, 11(7), 1247; https://doi.org/10.3390/ma11071247
Received: 27 June 2018 / Revised: 17 July 2018 / Accepted: 18 July 2018 / Published: 20 July 2018
(This article belongs to the Special Issue Special Issue of the Manufacturing Engineering Society (MES))
The present work proposes a novel manufacturing technique based on the combination of Laser Metal Deposition, Laser Beam Machining, and laser polishing processes for the complete manufacturing of complex parts. Therefore, the complete process is based on the application of a laser heat source both for the building of the preform shape of the part by additive manufacturing and for the finishing operations. Their combination enables the manufacture of near-net-shape parts and afterwards removes the excess material via laser machining, which has proved to be capable of eliminating the waviness resulting from the additive process. Besides, surface quality is improved via laser polishing so that the roughness of the final part is reduced. Therefore, conventional machining operations are eliminated, which results in a much cleaner process. To validate the capability of this new approach, the dimensional accuracy and surface quality as well as the microstructure of the resulting parts are evaluated. The process has been validated on an Inconel 718 test part, where a previously additively built-up part has been finished by means of laser machining and laser polishing. View Full-Text
Keywords: laser; additive manufacturing; laser beam machining; laser polishing; waviness; roughness; Inconel 718 laser; additive manufacturing; laser beam machining; laser polishing; waviness; roughness; Inconel 718
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MDPI and ACS Style

Arrizubieta, J.I.; Cortina, M.; Ruiz, J.E.; Lamikiz, A. Combination of Laser Material Deposition and Laser Surface Processes for the Holistic Manufacture of Inconel 718 Components. Materials 2018, 11, 1247.

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