| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
Effect of Laser Powder Bed Fusion Processing on the Microstructure and Mechanical Properties of Nb |
| Author(s) |
Advika Chesetti, Sucharita Banerjee, Venkata Mani Krishna Karri, Vishal Soni, Abhishek Sharma, S. M Varahabhatla , Zane Hughes, Srinivas Aditya Mantri, Narendra B Dahotre, Raj Banerjee |
| On-Site Speaker (Planned) |
Advika Chesetti |
| Abstract Scope |
Refractory metals are attractive candidates for high temperature structural applications, and with the advent of additive manufacturing (AM), there is renewed thrust towards the fabrication of refractory metals and alloys via fusion-based approaches. However, the inherent far-from equilibrium thermo-kinetic conditions of AM processing present challenges. This study focuses on AM processing of niobium (Nb) using the laser powder bed fusion technique. The Taguchi method was employed to map the vast space of process parameters for build optimization. The AM process induced microstructure and its effect on the mechanical properties was assessed. The significantly higher strength coupled with high strain hardenability of the LPBF processed Nb can be potentially attributed to the dislocation substructure and oxygen interstitial content. While the defect structure has been characterized by TEM, the oxygen distribution at the nanoscale has been characterized by APT. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Mechanical Properties |