About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Additive Manufacturing of Titanium-based Materials: Processing, Microstructure and Material Properties
|
Presentation Title |
A-16: Characteristics of Ti-6Al-4V Component Fabricated by Laser Powder Bed Fusion Process |
Author(s) |
Youngil Son, Seok-Jae Lee |
On-Site Speaker (Planned) |
Youngil Son |
Abstract Scope |
We investigated the characteristics of Ti-6Al-4V component fabricated by laser powder bed fusion(L-PBF) process. The characteristics including macrostructure, microstructure, and mechanical properties were evaluated quantitatively. The Ti-6Al-4V component fabricated by L-PBF showed a relative density which was identical to that measured by the Ti-6Al-4V sample prepared by traditional processes. There was a little difference in surface roughness of the Ti-6Al-4V component manufactured by L-PBF depending on the initial average size of Ti-6Al-4V powder particles. The lamellar structure was repeatdely observed in the Ti-6Al-4V component fabricated by L-PBF. The complex microstructure consisted of α-phase and β-phase was observed in the Ti-6Al-4V sample prepared by traditional processes whereas the α’-martensite was only observed in the Ti-6Al-4V sample manufactured by L-PBF. The Ti-6Al-4V component fabricated by L-PBF showed higher yield and tensile strength, higher hardness, and better elongation compared with the Ti-6Al-4V sample prepared by traditional processes. |