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通过金相及能谱分析 ,详细介绍了试验用钢的化学成分和夹杂物类型、形态等 ;试验用钢在 3%NaCl溶液中进行了阳极极化试验和短时间的自然浸泡试验 ,并用显微镜观察了试样表面。综合分析认为 :MnNb钢的点蚀敏感性与其夹杂物类、形态等有关
Through metallographic and energy spectrum analysis, the chemical composition of inclusions and the types of inclusions were introduced in detail. The test steel was subjected to anodic polarization test and natural immersion test in 3% NaCl solution for a short period of time. Microscope The surface of the specimen was observed. The comprehensive analysis shows that the pitting sensitivity of MnNb steel is related to its inclusions, morphology and so on