|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||Mechanical and Corrosion Properties of CoCrFeNiTi-based High-entropy Alloy Additive Manufactured Using Selective Electron Beam Melting
||Tadashi Fujieda, Hiroshi Shiratori, Kosuke Kuwabara, Mamoru Hirota, Takahiko Kato, Kenta Yamanaka, Yuichiro Koizumi, Akihiko Chiba
|On-Site Speaker (Planned)
High-entropy alloys (HEAs) are equiatomic, multi-element systems that contain five or more principal elements and that have unique and excellent properties. However, the inherent complexity and high levels of control required to produce homogeneous alloys industrially are difficult to overcome using a conventional casting method. We produced a high density and homogeneous CoCrFeNiTi-based HEA using selective electron beam melting (SEBM) and investigated the mechanical and corrosion properties. The alloy exhibited higher strength and ductility at room temperature and higher corrosion resistance in a chloride solution than conventional engineering materials like stainless steels. We attribute these superior properties to the homogeneous microstructure that fine Ni3Ti intermetallic compounds precipitate with basket-weave morphology in an fcc phase matrix.
||Planned: A print-only volume