管线钢在近中性pH值环境中应力腐蚀开裂研究进展

Research Progress on Stress Corrosion Cracking of Pipeline Steel in Near-neutral pH Environment

介绍了管线钢在近中性pH值环境中应力腐蚀开裂的机理。对管线钢在近中性pH值环境中应力腐蚀开裂的影响因素进行了说明。分析了在近中性pH值环境中力学因素(应力和应变速率)和环境因素(阴极电位、pH值、温度、氢以及溶解氧)对高强度管线钢应力腐蚀开裂的影响。总结了现阶段在近中性pH值环境中,高强度管线钢应力腐蚀开裂研究所存在的问题,并提出了研究、发展的方向。

The mechanism of stress corrosion cracking of pipeline steel in near-neutral pH environment was introduced.The influencing factors of stress corrosion cracking of pipeline steel in near-neutral pH environment were described in detail.The effects of mechanical factors(stress and strain rate)and environmental factors(cathode potential,pH,temperature,hydrogen and dissolved oxygen)on the stress corrosion cracking of high-strength pipeline steel in near-neutral pH environment were analyzed.The problems existing in the stress corrosion cracking research of high-strength pipeline steel in near-neutral pH environment were summarized,and the direction of research and development was put forward.