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首页> 外文期刊>The Holistic Approach to Environment >THE INFLUENCE OF MEDIUM AND MICROSTRUCTURE ON CORROSION RATE OF DUAL PHASE HIGH-STRENGTH STRUCTURAL STEELS
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THE INFLUENCE OF MEDIUM AND MICROSTRUCTURE ON CORROSION RATE OF DUAL PHASE HIGH-STRENGTH STRUCTURAL STEELS

机译：介质和微观结构对双相高强度结构钢腐蚀速率的影响

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摘要

The corrosion damages significantly reduce the use-value and shorten the life time of various constructions. As a result of corrosion damages occur enormous costs, and sometimes major disasters which can lead to the material costs and also dangerous consequences for human life. With proper selection of structural material and its corrosion protection these unpleasant consequences can be avoided or significantly reduced. Every material has a different corrosion behavior depending on the physical conditions and medium in which it is located. In this work the influence of medium and microstructure on corrosion rate of dual phase high-strength structural steels was studied. The electrochemical measurements revealed that both examined dual phase steels showed lower corrosion rate in the medium of 5 % NaOH, than in the medium of 5 % H2SO4. The metallographic analysis of investigated materials indicated the fact that the amount of martensite phase and morphology of microstructural constituents have a significant effect on the corrosion behavior of dual phase steels. Namely, with decreasing the amount of martensite in dual phase steels corrosion rate increases in both examined media.
机译：腐蚀损伤会大大降低其使用价值，并缩短各种结构的使用寿命。由于腐蚀而造成的损失是巨大的成本，有时甚至是重大灾难，这可能导致材料成本以及对人类生命的危险后果。用结构材料的适当选择和它的腐蚀保护这些不愉快的后果可避免或减少显著。每种材料都有不同的腐蚀行为，具体取决于物理条件和所处的介质。在这项工作中，研究了中微结构对双相高强度结构钢腐蚀速率的影响。电化学测量表明，两种检测的双相钢在5％NaOH介质中的腐蚀速率均低于在5％H2SO4介质中的腐蚀速率。研究材料的金相分析表明，马氏体相的数量和显微组织成分的形态对双相钢的腐蚀行为具有重要影响。即，随着双相钢中马氏体数量的减少，两种检验介质中的腐蚀速率均增加。

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