HREM STUDY OF THE ORIENTATION RELATIONSHIP AND INTERFACIAL STRUCTURE BETWEEN CEMENTITE AND MARTENSITE IN 9Ni STEEL
9Ni钢中渗碳体与马氏体取向关系及相界结构

In the present paper, the orientation relationship and the atomic structure of phase boundary between martensite and cementite have been studied by means of TEM and HREM. An orientation relationship different from Bagaryaskii, Isaichev or Pitsch-Petch relationship has been observed. The interface between stick cementite and martensite contains steps and that between particle cementite and martensite is composed of misfit dislocations.