About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing of Refractory Metallic Materials
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Presentation Title |
Investigating High-Temperature Mechanical Properties and Microstructures of Additively Manufactured Refractory Alloys |
Author(s) |
Sharon Park, Mo-Rigen He, Michael Patullo, Syed I.A. Jalali, Alex Lark, Gianna Valentino, Kevin Hemker |
On-Site Speaker (Planned) |
Sharon Park |
Abstract Scope |
Recent developments in additive manufacturing (AM) technology – namely advancements in AM process optimization – have facilitated the successful fabrication of refractory-based AM components. However, detailed characterization of such components, particularly at high temperatures, is still in its early stages. In this study, we investigate the microstructure-property relationships for AM refractories like niobium C103, tantalum-base, and tungsten-base alloys at elevated temperatures, up to and exceeding 1500C. Refractory metals and alloys in this study were processed by either laser powder bed fusion or powder-based directed energy deposition. A novel ultrahigh temperature vacuum (10-7 Torr) testing system is being employed to assess the tensile properties of these AM refractory alloys. Moreover, detailed electron microscopy is ongoing to elucidate the influence of highly anisotropic AM microstructures on the mechanical response of these refractory builds, including anomalous strain hardening at 400C and significantly increased plasticity at 1000C in AM tantalum. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, High-Temperature Materials, Mechanical Properties |