The metallurgical structure and fracture morphology of the tensile specimens were investigated with SEM and metallurgical analysis, and the static tensile plastic deformation mechanism was researched.
利用扫描电镜断口分析及金相分析技术，分析了材料拉伸试件断口形貌及金相组织，初步探讨了材料的静态拉伸塑性变形机理。
Barkhausen noise analysis (BNA) is a distinctive measure for testing microscopic stresses and metallurgical structure in ferromagnetic materials.
巴氏噪声分析(BNA)是一种检测铁磁材料微观应力及金相组织的独特方法。
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。
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