Effect of H-doping on damping capacity of various NiTi-based alloys at kHz frequencies (Articolo in rivista)

Type
Label
  • Effect of H-doping on damping capacity of various NiTi-based alloys at kHz frequencies (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Coluzzi B.; Biscarini A.; Mazzolai G.; Mazzolai F.M.; Tuissi A. (2006)
    Effect of H-doping on damping capacity of various NiTi-based alloys at kHz frequencies
    in Journal of engineering materials and technology (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Coluzzi B.; Biscarini A.; Mazzolai G.; Mazzolai F.M.; Tuissi A. (literal)
Pagina inizio
  • 254 (literal)
Pagina fine
  • 259 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 128-3 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • University of Perugia, Department of Physics, Via A. Pascoli 5, 06100 Perugia, Italy Istituto per l'Energetica e le Interfasi, CNR-IENI, Lecco, Italy (literal)
Titolo
  • Effect of H-doping on damping capacity of various NiTi-based alloys at kHz frequencies (literal)
Abstract
  • The internal friction Q-1 and the Young's modulus E of NiTi based alloys have been measured as a function of temperature after various thermomechanical and hydrogen-doping treatments given to the materials. Hydrogen is found to play a major role introducing tall damping peaks associated with Snoek-type and H-twin boundary relaxations. Levels of Q-1 as high as 0.08 have been detected, which are among the highest to date measured in metal alloy systems. For appropriate alloy compositions, these peaks occur at around room temperature (for acoustical frequencies), thus providing a good opportunity to reduce machinery vibrations and noise pollution. In the paper, the conditions are highlighted under which maximum efficiency can be reached in the conversion of mechanical energy into heat (literal)
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