Extended Data Fig. 7: Stress-dependent GB excess enthalpies.
From: Observations of grain-boundary phase transformations in an elemental metal
0 K calculations of GB excess enthalpies γdomino and γpearl to estimate stresses and strains required to stabilize the domino phase and achieve equilibrium coexistence in the model. GB excess energy curves cross at: a, lateral strain \({\varepsilon }_{11}^{\ast }\) = 2%; b, tensile stress \({\sigma }_{33}^{\ast }\) = 5 GPa; and c, shear stress parallel to the GB along the tilt axis \({\sigma }_{23}^{\ast }\) = 440 MPa. [U]N, [V]N and [B]N are the excess GB energy, volume and shear, respectively.
