TITLE

Elastic behavior of polycrystalline Nb3Sn at low temperatures

AUTHOR(S)
Poirier, M.; Laroche, F.; Martin, M.; Bussière, J. F.
PUB. DATE
July 1985
SOURCE
Applied Physics Letters;7/15/1985, Vol. 47 Issue 2, p92
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The elastic constants of polycrystalline Nb[sub 3]Sn were determined as a function of temperature when the samples were submitted to uniaxial tensile stress. The Young's (E) and shear (G) moduli were obtained from an ultrasonic pulse transmission technique in the range 4-300 K. Their behavior with temperature and applied stress is discussed in terms of the martensitic phase transformation occurring at ˜43 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.
ACCESSION #
9817788

 

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