The EDP Characteristics of Martensite Twin Substructure in High Carbon Steel

The martensite twin substructure in the high carbon steel was investigated by use of the electron diffraction patteron (EDP) method and it was discovered that: the thickness of the minimun twin was thinner than 0.7 nm rather than 5 nm as published in literature. Although the twins in a martensite grain corresponding the same twinning plane exhibited the same EDP, the electron waves from these twins were noncoherent scattering each other.