Fig. 7

Experimentally obtained Hall-Petch coefficient, kHP values of various metals/alloys against the theoretical shear stress intensity, ks. Nb 36, Al 36, Ni 36, Cu 36, CoCrFeMnNi46, HfNbTaTiZr47,48, Ni3Fe49. kHP values are normalized by the Taylors factor, M for an equivalent measurement against FCC (M = 3.06) and BCC (M = 2.7) structures. A dotted line in the above plot is merely an imaginary line.