The effects of a 2at%Nb addition upon the stability and H-induced internal friction behavior of Ti34Zr11Cu47Ni8 multi-component glassy alloy were investigated. Thermal analysis indicated that the supercooled liquid region decreased by adding Nb; indicating that 2at%Nb addition reduced the glass-forming ability. On the other hand, there was no effect of the Nb addition upon the H content dependence of the peak internal friction or the peak temperature. The Nb underwent no attractive interaction with Ti and Zr but was attracted to Ni atoms. The contrasting effects of Nb addition were attributed to its differing effects upon the local atomic structure. That is, there was no effect of Nb upon the local atomic structure around Ti and Zr having high affinity with H, but a marked effect upon the environment of Ni.

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: Journal of Alloys and Compounds, 2007, 434-435, 196-8