The abnormal block and black round structure of 50 axletree steel was studied and analyzed using optical microscopy, transmission electron microscopy, electron probe and so on.

用光学显微镜、透射电子显微镜以及电子探针等现代材料试验手段对50钢中存在的大块黑色团状异常组织进行了研究和分析。

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Both the diffusion couple specimens and the alloys were examined by means of optical microscopy, scanning electron microscopy, and electron probe microanalysis.

扩散偶和合金样品采用光学显微镜、扫描电镜和电子探针显微分析技术进行分析。

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The distributions of composition, phase-and microstructure were examined respectively by using electron probe microanalysis (EPMA), X-ray Diffraction (XRD) and scanning electron microscopy (SEM).

分别用电子探针（EPMA）、X衍射（XRD）和扫描电镜（SEM）查证了其组分、相结构和显微结构的梯度分布。

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