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首页> 外文会议>4th International Moratuwa Engineering Research Conference >Effect of Penetration of Corrosion on the Load-Bearing Capacity of Mild Steel
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Effect of Penetration of Corrosion on the Load-Bearing Capacity of Mild Steel

机译：腐蚀渗透对低碳钢承载能力的影响

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The field of Metallurgical Engineering associated with the service life of corroded metallic structures has been studied in extensive detail, the world over. Most of the theses in this area have focused only on the general attack (uniform corrosion) on steel structures in a range of atmospheres. This study sought to examine whether the penetration of corrosion beyond the general attack into the bulk material, has a significant effect on the load-bearing capacity of mild steel structures. Mild steel samples were corroded in an aggressive atmosphere over a 5-month period, subjected to periodic tensile testing and corrosion mass-loss analyses, and examined under optical and electron microscopy. Through the identification and measurement of the penetration of corrosion using scanning electron microscopy, this research managed to correlate corrosion mass-loss and tensile load-loss data with said microscopic measurements. The results showed that the actual breaking loads deviated negatively from the expected load-bearing capacity, which was determined through conventional methods. This deviation showed a close correlation to the increase of penetration of corrosion with time.
机译：与腐蚀金属结构的使用寿命相关的冶金工程领域已在世界范围内进行了广泛的研究。该领域中的大多数论点仅集中于各种气氛下对钢结构的一般腐蚀（均匀腐蚀）。这项研究试图检验腐蚀是否超出一般的侵蚀方式渗透到散装材料中，这对低碳钢结构的承载能力是否有重大影响。低碳钢样品在侵蚀性气氛中腐蚀了5个月，进行了定期的拉伸试验和腐蚀质量损失分析，并在光学和电子显微镜下进行了检查。通过使用扫描电子显微镜对腐蚀的渗透进行识别和测量，这项研究设法将腐蚀质量损失和拉伸载荷损失数据与所述显微测量结果相关联。结果表明，实际的断裂载荷与预期的承载能力有很大的偏差，后者是通过常规方法确定的。该偏差表明与腐蚀渗透率随时间的增加紧密相关。

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