fig13

Figure 13. (A) [0001]_α2 superimposed pole figures showing the lattice correspondence between the α₂ and O phases, with the calculated habit planes being ($$ \bar{1} $$4$$ \bar{3} $$0)_α2; (B) HRTEM image recorded along [0001]_α2. (Reproduced from Ref.[88]^[88]); The [11$$ \bar{2} $$0]_α2/[110]_O superimposed pole figure exhibits the lattice correspondence of (C) equivalent {20$$ \bar{2} $$1}_α2 planes and {221}_O and {041}_O planes and (D) equivalent {20$$ \bar{2} $$0}_α2 planes and {220}_O and {040}_O planes; (E) Evolution of the (20$$ \bar{2} $$0)_α2 and (040)_O reflection doublet and (20$$ \bar{2} $$1)_α2 and (041)_O reflection doublet with increasing stress. (Reproduced from Ref.[37]^[37]). HRTEM: High-resolution transmission electron microscopy.