| Abstract Scope |
Nb3Sn superconductors are the most practical option for next-generation particle accelerator magnets. Recently, Hf additions to the base Nb alloy have be utilized to raise recrystallization temperatures above the Nb3Sn reaction treatment. This improves performance in the conductor by limiting the final Nb3Sn grain size. However, increased industry-wide Hf demand poses challenges for meeting future demands in particle accelerator projects, i.e. Future Circular Collider. Therefore, alternatives need to be identified for sustainability. A series of binary Nb-X alloys, including X=Ti, Zr, Hf, V, Ta, Mo, W, and Re, were fabricated and subjected to varying degrees of deformation. Static and dynamic recrystallization experiments were performed using the Gleeble thermomechanical simulator, and the resulting microstructure evolution was characterized with EBSD. Hardness measurements were also performed. This work expands upon the knowledgebase of how alloying elements affect microstructural evolution in Nb alloys for applications in superconductors and refractory multi-principal element alloys (RMPEAs). |