Internal friction measurements in Nb-0.3wt.%Ti containing oxygen

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Data

1996-12-01

Autores

Grandini, Carlos Roberto [UNESP]
Ferreira, LEC
Sandim, HRZ
Florencio, O.
Tejima, H.
Jordao, JAR

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Editions Physique

Resumo

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).

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Journal de Physique Iv. Les Ulis Cedex: Editions Physique, v. 6, n. C8, p. 135-138, 1996.