A comment on 'Crystallography and migration mechanisms of planar interface boundaries' Acta Materialia, 52, 795-807 (2004) by J. F. Nie

In a recent paper by Nie, it was claimed that there is no two-dimensional continuity of lattice planes across the invariant line. However, it is a property of an invariant line strain that any planes related by the transformation strain must exhibit continuity across the invariant line. This note indicates that the Nie's incorrect conclusion is due to his definition of the shear strain that is different from the standard matrix method.