0.18C-0.95Cr钢层片状双相组织中,马氏体板条间存在条形残余奥氏体,马氏体与奥氏体的位向关系同样服从K-S关系。铁素体区域中的微小奥氏体岛,淬火后可以得到多边体形单晶马氏体,铁素体与马氏体界面分布着微小粒状渗碳体。临界淬火加热速度较小(2℃/min)的层片状双相组织α＇中的Cr含量比与其相邻的铁素体的高。在马氏体与铁素体界面的EELS中出现明显的C,K峰和N,K峰。 In the 0.18C-0.95Cr steel sheet-like duplex structure, there are strip-shaped retained austenite between the martensite laths and the orientation relationship between martensite and austenite follows the same K-S relationship. The tiny austenite islands in the ferrite region can be obtained after polycrystalline martensite polygons quenching, ferrite and martensite interface with tiny granular cementite. The Cr content in the lamellar duplex structure α ’of the critical quenching heating rate (2 ° C / min) is higher than that of the adjacent ferrite. The obvious C, K and N, K peaks appeared in the EELS at the martensite and ferrite interfaces.