Figure 4

(a) Relationship between yield shear stress (T_y) and glass transition temperature (T_g). The solid line is the plot of the equation, T_y = 3R(T_g– RT)/V, where R is the gas constant. The symbols A to O represent the alloys listed in Table 1 of Ref. 56. (b) Two-dimensional plot of viscosity (η) as a function of T/T₀ and σ/σ₀, where T₀ is the critical temperature and σ₀ is the critical stress where η₀ diverges in extrapolation to T = 0 K. The white curve represents the line for log₁₀η₀ = 5. Note that the lines with a constant value of η are self-similar.