|About this Abstract
||Materials Science & Technology 2019
||Late News Poster Session
||P3-38: 3D Characterization of Defects in Deep-powder-bed Manufactured Ti-6Al-4V and Influence on Tensile Properties
||Joe Elambasseril, Shenglu Lu, Yapeng Ning, Nan Liu, Jian Wang, Milan Brandt, Huiping Tang, Ma Qian
|On-Site Speaker (Planned)
A systematic study has been performed to investigate the effects of positional variation of porosity, microstructure and mechanical properties of vertically built long Ti-6Al-4V rods by selective electron beam melting (SEBM) up to the maximum building height (300 mm) of the Arcam A2 system. The as-built Ti-6Al-4V rods were characterised in detail using high-resolution micro focus X-ray computed tomography (µCT). The reconstructed three-dimensional (3D) images allowed a quantitative assessment of the sphericity, equivalent diameter and spatial distribution of pores in the rod as a function of building height. A number of new findings were made, which, together with the microstructural details and mechanical property data obtained from different segments of these long rods, are expected to improve the current understanding of the capabilities and limitations of the SEBM process for additive manufacturing of Ti-6Al-4V.