Interphase boundary structures were compared for lath-shaped bainitic ferrite in Fe-2Si-1Mn-0.6C and lath martensite in Fe-20Ni-5.5Mn. Both laths exhibited a macroscopic habit plane, scattered around (121)γ, which contained monatomic steps with a (111)γ||(011)α terrace (transformation dislocations/structural ledges). Similar accommodation dislocations with a pure screw nature, on (111)γ||(011)α, were observed in both cases.

Comparison of Interphase Boundary Structure between Bainite and Martensite in Steel. T.Moritani, N.Miyajima, T.Furuhara, T.Maki: Scripta Materialia, 2002, 47[3], 193-9