Analysis of the Machining Process of Inconel 718 Parts Manufactured by Laser Metal Deposition

Materials (Basel). 2019 Jul 5;12(13):2159. doi: 10.3390/ma12132159.

Abstract

Laser metal deposition (LMD) is an additive manufacturing process that allows the manufacturing of near-net-shape products. This could mean significant savings in terms of materials and costs in the manufacturing of high-performance components for the aeronautical industry. In this work, an analysis of how the LMD processing of alloy 718 affects the final machining has been carried out. For this purpose, a comparative study has been done by means of the monitoring of the end milling process of a part manufactured by LMD and a rough-milled part from forged material. Differences between process outputs such as chip morphology and cutting forces were studied. Material characteristics such as microstructure, hardness and mechanical properties were also analyzed.

Keywords: additive manufacturing; directed energy deposition; hybrid manufacturing; laser metal deposition.