التفاصيل البيبلوغرافية
| العنوان: |
Processing Strategies for Niobium Sheet Used in Advanced Superconducting Particle Accelerator Cavities. |
| المؤلفون: |
Baars, D., Bieler, T. R., Hartwig, K. T., Jiang, H., Compton, C., Grimm, T.L. |
| المصدر: |
JOM: The Journal of The Minerals, Metals & Materials Society (TMS); Jun2007, Vol. 59 Issue 6, p50-55, 6p, 5 Black and White Photographs, 1 Chart, 2 Graphs |
| مصطلحات موضوعية: |
NIOBIUM, RADIO frequency, LINEAR accelerators, MICROSTRUCTURE, POLYCRYSTALS |
| مستخلص: |
Ultra-high-purity niobium sheet is used to fabricate radio frequency cavities for use in future linear accelerators. The complexity of the shapes requires the electron-beam welding of deep-drawn components, but difficulties with inconsistent formability, springback, and surface roughness have been traced to non-uniform microstructures and texture gradients that are common in commercial niobium sheet. Two approaches under study to overcome these problems are the development of fine-grained favorably textured polycrystalline sheet, and the use of a properly oriented and nearly single-crystal sheet to form pieces of the cavity. Both approaches show promise but need further work. [ABSTRACT FROM AUTHOR] |
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