Authors:
Agustin Diaz (REM Surface Engineering, USA),
Patrick McFadden (REM Surface Engineering, USA),
John Scovill (ATI Specialty Materials, USA)
Abstract:
Metal additive manufacturing (AM) has revolutionized the manufacturing industry by increasing the complexity of the components while reducing operation steps, component lead-time, and costs. However, these components must comply with strict requirements and standards, especially for safety-critical applications. Requirements such as fatigue performance and corrosion resistance are a couple of the most problematic in the field, mainly due to their close relationship with surface texture and the usual surface-related defects (partially melted|sintered powder, v-notches, and near-surface porosity) associated with AM builds. For most aerospace and space exploration applications, these defects limit their applicability, hindering a broad-scale adoption of AM in these fields. This presentation will present a newly developed surface finishing process capable of removing surface-related defects on external and internal surfaces of metal AM components. Furthermore, the developed method can achieve a defect-free consistency with roughness lower than 0.8 µm. Part of this work was funded by NASA (SBIR-18-P2-Z3.01-5453) and USAF (SBIR-FA864921P0854 and SBIR-FA864921P0815).
DOI:
https://doi.org/10.59499/WP225366523