|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Powder Metallurgy of Light Metals
||Microstructure and Mechanical Properties of Ti-6Al-4V Additively Manufactured by Selective Electron Beam Melting
||Huiping Tang, Shenglu Lu, Jian Wang, Gang Chen
|On-Site Speaker (Planned)
Additive manufacturing (AM) is a layer-by-layer building process thereby resulting into an inhomogeneous microstructure. In this work, Ti-6Al-4V rods (diameter: 1.5mm - 12mm; height: 80mm - 300mm) and plates (thickness: 1mm -5 mm; height: 220mm; width: 40mm) have been additively manufactured by selective electron beam melting (SEBM). The as-built microstructure was consisted of martensite, massive phases and equilibrium α and β phases. It was found that the smaller the sample diameter/thickness is, the more non-equilibrium phase (i.e. martensite) exists. Along the building direction, it was revealed that the microstructure is coarsest and near equilibrium in the top segment and finest and non- equilibrium in the bottom segment. Even there are some variances in tensile properties, especially in ductility, all the tensile properties of the rods and plates meet the requirements specified by ASTM F3001-14. Post hot isostatic pressing (HIP) was used to homogenise the microstructure and realize consistent tensile properties.
||Planned: EPD Congress Volume