|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advances in Additive Manufacturing of Titanium and Titanium Based Alloys
||Microstructure Characterisation and Mechanical Properties of Ti-6Al-4V with Grain Refinement Made by Direct Laser Fabrication
||Kai Zhang, Tom Jarvis, Sheng Cao, Xinhua Wu
|On-Site Speaker (Planned)
Direct laser fabrication technique (DLF) or laser engineered net shaping (LENS) is an additive manufacturing method for building up large titanium alloy component. One issue in the DLF’d Ti-6Al-4V is the anisotropic mechanical properties at different directions, which causes difficulties in using the technology. The anisotropic mechanical properties are attributed to the presence of large columnar grains. In this study, different amounts of grain refiner were added into Ti-6Al-4V to make it into pre-alloyed powders within the standard alloy specification. DLF’d Ti-6Al-4V samples with different amount of grain refiners and different cooling history were manufactured. The correlation between the amount of grain refiner and cooling history with the mechanical property anisotropy was investigated and established in this study. In study it is found that the anisotropy in DLF’d Ti-6Al-4V can be significantly reduced, which could expand the use of DLF’d Ti-6Al-4V in industry.
||Planned: Supplemental Proceedings volume