本文利用透射电镜研究了某钢中夹杂物的堆垛层错，电子衍射分析表明，夹杂物内存在15R型长周期结构。利用双倾操作得到沿密排点列的特征衍射花样，分析夹杂物为面心立方结构，点阵常数为0.788nm。观察了这种材料的（ ）系统衍射的一维晶格相及[011]晶带轴的高分辨像。
The stacking fault of a inclusion in a steel was analysed by transmission electron microscopy (TEM). It was analysed by select area diffraction patterns (SADPs)that there exist period stacking (LPS) structure with 15R-type in the inclusion.Severl representative SADPs along close packing range of points were obtained by double tilt operation. The structure of the inclusion is face-centered cubic.The lattice constant of the inclusion is 0.788nm. One dimension systematic reflexions lattice images and HREM formed by [011] zone axis were observed.
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