The internal friction, the Young's modulus and the heat flow have been measured as a function of temperature in the Ni47Ti40Hf10Cu3 alloy. H-doping introduces two anelastic relaxations PH and PH0 . PH is a Snoek-type effect (WH 1?4 0:60 ? 0:1 eV, s0H 1?4 2 ? 10?ð16?1Þ s) also occurring in NiTi(Cu) alloys. PH0 is a new phenomenon due to quantum-mechanical transitions of H bound to Hf atoms and located at tetrahedral interstitial sites.
Damping spectrum of H-free and H-doped shape momory alloys NiTiHfCu at KHz frequencies
Tuissi A
2004
Abstract
The internal friction, the Young's modulus and the heat flow have been measured as a function of temperature in the Ni47Ti40Hf10Cu3 alloy. H-doping introduces two anelastic relaxations PH and PH0 . PH is a Snoek-type effect (WH 1?4 0:60 ? 0:1 eV, s0H 1?4 2 ? 10?ð16?1Þ s) also occurring in NiTi(Cu) alloys. PH0 is a new phenomenon due to quantum-mechanical transitions of H bound to Hf atoms and located at tetrahedral interstitial sites.File in questo prodotto:
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Descrizione: Damping spectrum of H-free and H-doped shape momory alloys NiTiHfCu at KHz frequencies
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