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- Title
Effect of heavy interstitials on anelastic properties of Nb-1.0 wt% Zr alloys.
- Authors
de Souza, Armando Cirilo; Grandini, Carlos Roberto; Florêncio, Odila
- Abstract
The mechanical properties of metals with bcc structure, such as niobium and its alloys, have changed significantly with the introduction of heavy interstitial elements. These interstitial elements (nitrogen, for example), present in the alloy, occupy octahedral sites and constitute an elastic dipole of tetragonal symmetry and might produce anelastic relaxation. This article presents the effect of nitrogen on the anelastic properties of Nb-1.0 wt% Zr alloys, measured by means of mechanical spectroscopy using a torsion pendulum. The results showed complex anelastic relaxation structures, which were resolved into their constituent peaks, representing each relaxation process. These processes are due to stress-induced ordering of the interstitial elements around the niobium and zirconium of the alloy.
- Subjects
NITROGEN; INTERNAL friction; NIOBIUM alloys; ZIRCONIUM alloys; MECHANICAL properties of metals; ELASTIC properties of metals; TORSION pendulums; POLARIZATION (Electricity); PHYSICAL &; theoretical chemistry
- Publication
Journal of Materials Science, 2008, Vol 43, Issue 5, p1593
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-007-2324-0