| Numéro |
J. Phys. Colloques
Volume 43, Numéro C4, Décembre 1982
ICOMAT-82International Conference on Martensitic Transformations |
|
|---|---|---|
| Page(s) | C4-357 - C4-362 | |
| DOI | https://doi.org/10.1051/jphyscol:1982451 | |
ICOMAT-82
International Conference on Martensitic Transformations
J. Phys. Colloques 43 (1982) C4-357-C4-362
DOI: 10.1051/jphyscol:1982451
Kernforschungszentrum, Institut für Technische Physik, 7500 Karlsruhe, F.R.G.
International Conference on Martensitic Transformations
J. Phys. Colloques 43 (1982) C4-357-C4-362
DOI: 10.1051/jphyscol:1982451
MARTENSITIC TRANSFORMATIONS AND THEIR EFFECTS ON SUPERCONDUCTIVITY IN A15 SUPERCONDUCTORS
R. FlükigerKernforschungszentrum, Institut für Technische Physik, 7500 Karlsruhe, F.R.G.
Abstract
The crystal structure of Nb3Sn filaments in multifilamentary wires has been investigated by neutron diffraction in the temperature range 4.2 ≤ T ≤ ≤ 800 K. Two stress-induced modifications of Nb3Sn have been detected : the first one is a tetragonal distortion (T2) occurring below 800 K, the second is a new, still unresolved phase (T3), occurring below ˜ 100 K. Both modifications are distinctly different from the well-known tetragonal phase (T1) observed in the bulk, stress-free state. The effect of these modifications on superconductivity is discussed.