Elastic behavior of polycrystalline Nb\u2083Sn at low temperatures
- Poirier, M.
- Laroche, F.
- Martin, M.
- Bussi\ue8re, J. F.
DOIAbstract
The elastic constants of polycrystalline Nb\u2083Sn were determined as a function of temperature when the samples were submitted to uniaxial tensile stress. The Young\u2019s (E) and shear (G) moduli were obtained from an ultrasonic pulse transmission technique in the range 4\u2013300 K. Their behavior with temperature and applied stress is discussed in terms of the martensitic phase transformation occurring at 3c43 K and the ferroelastic character of the tetragonal phase (T <43 K). Uniaxial tensile stress is found to stiffen the moduli at all temperatures by stabilizing the crystal structure and by progressively eliminating the domains in the tetragonal phase.Peer reviewed: YesNRC publication: Ye
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