Fig. 5
From: Non-glide effects and dislocation core fields in BCC metals
Activation enthalpy and Peierls stress. a Examples of variation of the activation enthalpy with resolved shear stress for various non-glide pure shear stresses. b Dependence of the Peierls stress on the non-glide stress \(\sigma\) and the angle \(\chi\) between the plane of maximum shear and the horizontal \((1\overline{1}0)\) glide plane, as illustrated in the inset of (a). In (a), the solid lines are predictions from the eigenstrain model, while the symbols correspond to the values of \(\tau\) and \(\sigma\) considered in the DFT calculations. The symbols in (b) were obtained by extrapolating the core eigenstrain model to zero activation enthalpy for various values of \(\chi\) and \(\sigma\). The solid lines are predictions from Eq. (7)
