Figure 8.

Plots used for the calculation of hot deformation constants (a) $\ln \dot{\epsilon }-\ln \sigma$; (b) $\ln \dot{\epsilon }-\sigma$; (c) $\ln \dot{\epsilon }-\ln \left[\sin \mathrm{h}\left(\alpha \sigma \right)\right]$; and (d) $\ln \left[\sin \mathrm{h}\left(\alpha \sigma \right)\right]-\left(1000/T\right)$.