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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/69303
Title: 
Anelastic relaxation due to interstitial solutes diffusion in Nb and Nb-1 wt% Zr
Author(s): 
Institution: 
  • Universidade Federal de São Carlos (UFSCar)
  • Universidade Estadual Paulista (UNESP)
ISSN: 
1012-0386
Abstract: 
Metals and alloys containing solute atoms dissolved interstitially often show anelastic behavior due to a process know as stress-induced ordering. The application of mechanical spectroscopy measurements to diffusion studies in body-centered cubic metals has been extensively used in the last decades. However the kind of preferential occupation of interstitial solutes in body-centered cubic metals is still controversial. The anelastic properties of the Nb and Nb-1 wt% Zr polycrystalline alloys were determined by internal friction and oscillation frequency measurements using a torsion pendulum inverted performed between 300K and 650K, operating in a frequency oscillation in the hertz bandwidth. The interstitial diffusion coefficients of oxygen and nitrogen in Nb and Nb-1 wt% Zr samples were determined at two distinct conditions: (a) for low concentration of oxygen and (b) for high concentration of oxygen.
Issue Date: 
1-Dec-2006
Citation: 
Defect and Diffusion Forum, v. 258-260, p. 137-145.
Time Duration: 
137-145
Keywords: 
  • Internal friction
  • Interstitial diffusion
  • Nb
  • Nb-Zr alloys
  • Nitrogen
  • Oxygen
  • Anelastic behavior
  • Body-centered cubic metals
  • Stress-induced ordering
  • Bandwidth
  • Niobium compounds
  • Physical properties
  • Relaxation processes
  • Spectroscopic analysis
  • Diffusion in solids
Source: 
http://dx.doi.org/10.4028/www.scientific.net/DDF.258-260.137
URI: 
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/69303
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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