|About this Abstract
||2019 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Fatigue and Fracture III
||Manipulation of Defects, Crystallographic Texture and Tensile Properties in Additively Manufactured Ti-6Al-4V Parts
||Jake Benzing, Nikolas Hrabe, Ryan White, Magnus Ahlfors
|On-Site Speaker (Planned)
The influences of processing and post-processing conditions on defect content, crystallographic texture, grain morphology and tensile properties of Ti-6Al-4V parts (produced by electron beam melting - a powder bed fusion method) are under current investigation. In the current work, the use of support structures and scan length (two industrially relevant processing variables) will be systematically examined in regard to changes in crystallographic texture due to differences in thermal gradients. Hot isostatic pressing (HIP) is a commercial post-processing step known to seal internal porosity in additively manufactured parts. In the present work, sub-Beta transus and super-Beta transus HIP treatments (including a martensite tempering step) will be employed to manipulate the crystallographic texture and grain morphology of the Ti-6Al-4V parts. The effects of these texture variations on tensile properties will be reported.
||Planned: Supplemental Proceedings volume