求翻译：试样的衍射斑和TEM照片见图6和图7。晶界上析出的碳化物为面心立方结构的M23C6，它总沿晶基体共格，呈立方-立方取向，晶格常数是基体的3倍，见图6（a）。当特殊热处理温度高时，出现粗大的孪晶界，见图6（b）。是什么意思？

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The test specimen diffraction spot and the TEM picture see Figure 6 and Figure 7.In the crystal boundary separates out carbide for center of area cubic structure M23C6, it always along crystal substrate coherent, assumes the cubic - cube orientation, the crystal constant is substrate 3 times, sees F

Diffraction spots and TEM photo of the specimen shown in Figure 6 and Figure 7. Grain boundary precipitation of carbide face-centered cubic structure on M23C6, it's always total along the Crystal substrate, cubic-cubic orientation, lattice constants is 3 times times the matrix, as shown in Figure 6

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