HREM STUDY OF THE AUSTENITE/MARTENSITE INTERFACES IN AN Fe-9Ni ALLOY

作     者：Li, G.L. Meng, X.M. Zhang, F.T. Wu, Y.K. 

作者机构：Inst of Metal Research Chinese Acad of Sciences Shenyang China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：1997年第10卷第5期

页      面：386-391页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：Austenite Electron microscopy Interfaces (materials) Martensite Nickel alloys 

摘      要：The atomic level structures of fcc/bcc interfaces in an Fe-9Ni alloy have been examined by means of HREM. It has been found that the orientation of γ prime /α interface had great effects on its atomic structure. These interfaces with different orientations may be composed of only structural ledges, structural ledges with misfit dislocations, superledges with misfit dislocations or only misfit dislocations. A structural model of growth ledge was suggested. The terrace of growth ledge was composed of structural ledges or misfit dislocations. The atomic structure of the riser of growth ledge was the same as that of the side facet of γ prime lath, which is composed of superledges with misfit dislocations.