Fig. 2: A schematic of stress dependence of the enthalpy density distribution.
a At zero stress, all grain orientations have the same enthalpy density equal to the chemical binding energy density of the stress-free state ψ(Ee = 0). b–d Enthalpy density distributions for increasing stress. d Transformation from a parent grain (blue bar) with orientation \({{{{{{{{\boldsymbol{g}}}}}}}}}_{i}^{\alpha }\) to variants in daughter phase orientations restricted by an OR (red bars).
