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Mechanistic Model of Stress Corrosion Cracking (SCC) of Carbon Steel in Acidic Solution with Presence of H2s

机译：含H2s的酸性溶液中碳钢应力腐蚀开裂的力学模型

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In oil and gas industrial environments, H2S gas is one of the corrosive species which should be a main concern in designing infrastructure made of carbon steel. Combination between the corrosive environment and stress condition will cause degradation of carbon steel increase unpredictably due to their simultaneous effects. This paper will design a model that involves electrochemical and mechanical theories to study crack growth rate under presence of H2S gas. Combination crack and corrosion propagation of carbon steel, with different hydrogen concentration has been investigated. The results indicated that high concentration of hydrogen ions showed a higher crack propagation rate. The comparison between corrosion prediction models and corrosion model developed by researchers used to verify the model accuracy showed a good agreement.
机译：在石油和天然气工业环境中，H2S气体是腐蚀性物质之一，在设计由碳钢制成的基础设施时应重点考虑。腐蚀环境和应力条件之间的结合将导致碳钢的降解，由于其同时发生的作用而无法预测地增加。本文将设计一个包含电化学和力学理论的模型，以研究在H2S气体存在下的裂纹扩展速率。研究了不同氢浓度下碳钢的结合裂纹和腐蚀扩展。结果表明，高浓度的氢离子表现出较高的裂纹扩展速率。腐蚀预测模型与研究人员用来验证模型准确性的腐蚀模型之间的比较显示出很好的一致性。

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