About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
Presentation Title |
Mechanical Properties and Microstructural Characteristics of Additively Manufactured C103 Niobium Alloy |
Author(s) |
Prithvi Dev Awasthi, Priyanka Agrawal, Ravi Sankar Haridas, Rajiv S Mishra, Michael T Stawovy, Scott Ohm, Aidin Imandoust |
On-Site Speaker (Planned) |
Prithvi Dev Awasthi |
Abstract Scope |
This research work aims to investigate the fitness of Nb-based C-103 alloy for laser based additive manufacturing (AM) technologies as a benchmark for the development of AM friendly Nb-based alloys. Crack free C-103 specimens with relative densities of above 99% were fabricated using laser powder bed fusion technology. Tensile and compression test results showed superior mechanical properties as compared to wrought C-103 counterparts. Improved mechanical performance was attributed to the high density of dislocations and formation of dislocation cell-structures revealed by transmission electron microscopy techniques. Electron backscattered diffraction analysis revealed columnar grain structure with <001>||BD fiber texture, which was consistent with the observed anisotropy in the machinal behavior. Fractography observations revealed a mix of ductile and brittle fracture behavior, wherein cleavage-like features originated from lack of fusion defects. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Mechanical Properties, Other |