Dynamical relaxation and stress relaxation of Zr-based metallic glass

The relationship among dynamic relaxation, deformation and microstructural heterogeneity of amorphous alloy is one the important research contents in field physics. In this paper, we utilize Zr<sub>48</sub>(Cu<sub>5/6</sub>Ag<sub>1/6</sub>)<sub>44</sub>Al<sub>8</sub> bulk with excellent glass forming capability good thermal stability as a carrier, investigate effects temperature structural relaxation on behavior through mechanical analysis stress experiments. results show that spectrum model sensitive to temperature, showing four stages increases, namely, iso configuration, aging, transition crystallization. Based isothermal measurement parameters under causes migrate from non-equilibrium high energy state low state, evolution internal friction aging time can be described by Kohlrausch-Williams-Watts (KWW) stretched exponential function. addition, based KWW equation activation spectrum, heterogeneous structure process analyzed, which involves transformation elastic nonelastic deformation. Owing fluctuations alloys, units not single characteristic time, but follows certain distribution. By considering distribution symmetric Gauss or asymmetric Gumbel logarithmic scale, response reconstructed.