Metallographic structure, Scanning electron microscope analysis test.
金相组织、扫描电子显微镜分析试验。
The metallographic analysis shows that the metallurgical structure is proper. The results of internal pressure test indicate that the hot tap structure can work safely.
对间断焊焊接接头的金相分析表明其金相组织正常，内压试验结果表明该结构能安全运行。
The article analyses the samples under the three heat treatment systems of inflection test with comparability, and illustrates the relation between metallographic structure and inflection performance.
本文运用金相组织分析的手段，对具有可比性的反弯试验的三种热处理制度下的样品进行分析，展示了金相组织与反弯性能之间的联系。
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