Figure 1. Evidence for existence of strain glass in solution treated TNTZ-1.2O alloy.
(a) Temperature dependence of XRD profile and (b) typical dynamic mechanical feature of strain glass for solution treated TNTZ-1.2O alloy. The inset of (b) shows that its storage modulus dip temperature (Tg(ω)) increases with increasing frequency (ω) obeying the Vogel-Fulcher relationship. (c) Dynamic mechanical feature of martensitic transition for solution treated Ti-20Nb alloy, which shows frequency independent behavior in its storage modulus dip temperature. The inset of (c) shows that the XRD profile of the martensite can be indexed by the orthorhombic α″ martensitic structure. (d) Strain glass phase diagram of Ti-Nb based alloy system, showing that the TNTZ-1.2O alloy can also be viewed as a Ti-Nb based strain glass.