Eleventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. IV France 06 (1996) C8-135-C8-138
Internal Friction Measurements in Nb-0.3 wt. % Ti Containing OxygenC.R. Grandini1, L.E.C. Ferreira1, H.R.Z. Sandim2, O. Florêncio3, H. Tejima3 and J.A.R. Jordão3
1 Departamento de Física, UNESP, 17.033-360, Bauru SP, Brazil
2 Departamento de Engenharia de Materiais, FAENQUIL, 12.600-000, Lorena SP, Brazil
3 Departamento de Física, UFSCar, 13.565-905, São Carlos SP, Brazil
Internal friction measurements were made in the Nb-Ti alloy containing 0.3 wt. % of Ti, doped with various quantities of oxygen (0.04 to 0.08 wt. %) utilizing a torsion pendulum. These measurements were performed in the temperature range of 300 K to 700 K with the oscillation frequency about 1.0 Hz. The experimental results showed relaxation peaks due the stress induced ordering of oxygen atom and pairs of oxygen atom around the niobium atoms (metallic matrix) and around titanium atoms (substitutional solute).
© EDP Sciences 1996