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- Title
Electron Beam Melting of Niobium Alloys from Blended Powders †.
- Authors
Hankwitz, Jameson P.; Ledford, Christopher; Rock, Christopher; O'Dell, Scott; Horn, Timothy J.
- Abstract
Niobium-based tungsten alloys are desirable for high-temperature structural applications yet are restricted in practice by limited room-temperature ductility and fabricability. Powder bed fusion additive manufacturing is one technology that could be leveraged to process alloys with limited ductility, without the need for pre-alloying. A custom electron beam powder bed fusion machine was used to demonstrate the processability of blended Nb-1Zr, Nb-10W-1Zr-0.1C, and Nb-20W-1Zr-0.1C powders, with resulting solid optical densities of 99+%. Ultimately, post-processing heat treatments were required to increase tungsten diffusion in niobium, as well as to attain satisfactory mechanical properties.
- Subjects
NIOBIUM alloys; ELECTRON beam furnaces; HEAT treatment; POWDERS; ALLOY powders; TUNGSTEN; TUNGSTEN bronze
- Publication
Materials (1996-1944), 2021, Vol 14, Issue 19, p5536
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma14195536