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Status and perspective of the Nb3Al development
- Source :
-
Cryogenics . Jul2008, Vol. 48 Issue 7/8, p371-380. 10p. - Publication Year :
- 2008
-
Abstract
- Abstract: Nb3Al has advantages of better tolerance to strain/stress and a higher critical magnetic field (30T at 4.2K) for stoichiometric composition over Nb3Sn. The rapid-heating, quenching and transformation annealing (RHQT) process enables to form a stoichiometric Nb3Al with fine grain structures via metastable bcc supersaturated-solid-solution. As a result a large critical current density of Nb3Al is achieved over the whole range of magnetic fields without trading off the excellent strain tolerance. A long-length of RHQ processing has been established, and a rectangular but Cu stabilized Nb3Al strand is about be commercially available for NMR uses. Ag or Cu internal stabilization and Cu ion-plating/electroplating techniques have been also developed to enable the stabilized round wire for accelerator and fusion magnets. Successfully energized test coils that were manufactured with a wind-and-react technique have demonstrated that a long piece of Cu stabilized RHQT Nb3Al wire is really available for practical applications. [Copyright &y& Elsevier]
- Subjects :
- *NIOBIUM
*ALUMINUM
*STRAINS & stresses (Mechanics)
*MAGNETIC fields
Subjects
Details
- Language :
- English
- ISSN :
- 00112275
- Volume :
- 48
- Issue :
- 7/8
- Database :
- Academic Search Index
- Journal :
- Cryogenics
- Publication Type :
- Academic Journal
- Accession number :
- 33000501
- Full Text :
- https://doi.org/10.1016/j.cryogenics.2008.04.007