|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advances in Additive Manufacturing of Titanium and Titanium Based Alloys
||Effect of Build Direction on Microstructure and Tensile Properties of Ti-6Al-4V Sheet Fabricated by Selective Electron Beam Melting
||Jian Wang, Kun Yang, Hui Ping Tang
|On-Site Speaker (Planned)
In this study, Ti-6Al-4V sheets with dimensions of 3mm×42mm×180mm have been additively manufactured, perpendicular and parallel to the powder layer, by selective electron beam melting (SEBM). For the sheets built perpendicular to the powder layer, the microstructure was found to be noticeably inhomogeneous with the bottom and middle segments showing a mixed microstructure of martensitic α′ and lamellar + while the top segment displaying a fine lamellar + structures. By contrast, the microstructure of sheets built parallel to the powder layer only showed lamellar + structures and the middle segments showed the coarsest microstructure. Thanks to the mixed microstructure, only the sheets built perpendicular to the powder layer can fully satisfy the minimum tensile property requirements for aerospace specifications of AMS 4911L.
||Planned: Supplemental Proceedings volume