| †42 | Curves are given for strain versus time (creep) at low temperatures for Ag and Al, Cu, Cd, and Zn. Low-temperature strain ∊ is related to a temperature-dependent coefficient α : ∊ = α ln (γIt+1). The temperature dependence of α is shown for temperatures from 1.2 K to 80 K. Creep strain versus log time is plotted for constant stress and different (undefined) temperatures. In the authors’ Fig. 1, creep is plotted as functions of both time and log(-time), but corresponding plots are not related by just a single mapping (linear to logarithmic). Careful study raises many unanswered questions, so the reader is cautioned to be careful in using the information from Fig. 1. |