Internal friction induced by interstitial atoms in multicomponent glassy alloy and composite

M. Hasegawa, M. Takeuchi, D. Nagata, T. Wada, H. Kato, S. Yamaura, A. Inoue

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Effects of the 2 at.% Nb addition on the stability and hydrogen-induced internal friction behavior of the Ti34Zr11Cu47Ni8 multicomponent glassy alloy have been investigated. Thermal analysis indicates that the supercooled liquid region decreases by adding Nb, indicating that 2 at.% Nb addition reduces glass forming ability. On the other hand, there is no effect of the Nb addition on the hydrogen content dependence of the peak internal friction and the peak temperature. Nb has no attractive interaction with Ti and Zr but is attracted to Ni atoms. The contrasting effects of Nb addition are thus attributable to its alternative effects on the local atomic structure, i.e. no effect of Nb on the local atomic structure around Ti and Zr having high affinity with hydrogen but strong effect on the environment of Ni.

Original languageEnglish
Pages (from-to)196-198
Number of pages3
JournalJournal of Alloys and Compounds
Volume434-435
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2007 May 31

Keywords

  • Damping material
  • Glassy alloy
  • Hydrogen
  • Internal friction
  • Local atomic structure

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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