By analogy with the role of perfect dislocations in facilitating Kurdjumov–Sachs type transformations, it was proposed that partial dislocations may be responsible for Nishiyama–Wassermann transformations. Such an interpretation could account for the presence of both “positive slip” and “negative slip” variants within individual grains, a hitherto unexplained phenomenon.

The Possible Role of Partial Dislocations in Facilitating Transformations of the Nishiyama–Wassermann Type. J.J.Jonas, Y.He, S.Godet: Scripta Materialia, 2005, 52[3], 175-9