|About this Abstract
||MS&T23: Materials Science & Technology
||Phase Transformations and Microstructure Evolution during Post-Processing of Additively Manufactured Metals
||Microstructure and Mechanical Characterization of As-deposited and Forged Wire Arc Additively Manufactured (WAAM) 316LSi
||Brett E. Ley, Vishnu Ramasamy, John Lewandowski
|On-Site Speaker (Planned)
||Brett E. Ley
Wire Arc Additive Manufacturing (WAAM) is a near net shape solution for printing large-scale metal components. Four distinct thick wall deposits of 316LSi Stainless Steel were printed using WAAM where the heat input and interpass temperature were systematically varied. From each thick wall deposit, several tension and fatigue crack growth (FCG) samples were machined along the x, y, and z directions and tested. The as-deposited microstructures and fracture surfaces were examined from three orientations. Characterization techniques included optical metallography for the microstructure and a combination of SEM and optical profilometry for the fracture surfaces. The effect of WAAM print conditions on the microstructural and FCG characteristics will be summarized. As-deposited materials were also forged to examine the effects of novel post-processing on the microstructures and some mechanical properties.