The temperature-dependence of the yield stress of the body-centered cubic transition metals, a-Fe, Nb, Mo, Ta, and of the alkali metal, obeyed a scaling relationship between the ratio of the yield stress to the Peierls stress, and kT/b3(tKT), where b was the length of the Burgers vector and KT was the line-tension factor for a screw dislocation under conditions of elastic anisotropy. The same relationship also appeared to apply to V, Cr and W; thus suggesting its general applicability, at least at strain rates of about 10-4/s. The result implied that the plasticity of body-centered cubic metals was characterized by only 1 non-elastic parameter; the Peierls stress.

Plastic Homology of BCC Metals. T.Suzuki, Y.Kamimura, H.O.K.Kirchner: Philosophical Magazine A, 1999, 79[7], 1629-42