| Abstract Scope |
In this study, the relationships among processing parameters, microstructures, and mechanical properties by Ti-6Al-4V fabricated via laser powder bed fusion were investigated. In particular, our aim was to determine how defect structures, prior-beta grain characteristics, and mechanical properties varied over a wide range of laser power and scanning speed. Thus, samples were fabricated using 42 disparate processing parameter sets, probing dense, lack-of-fusion, keyhole, and beading-up regimes, and samples were characterized using X-ray computed tomography, optical metallography, uniaxial tension, and Vickers microhardness measurements. Linkages among processing, microstructure/defects, and property characteristics were determined using statistical bivariate correlation analysis. Process defect maps and process property maps will be presented for tuning processing to achieve desired properties in additively manufactured Ti-6Al-4V. |