核电结构材料腐蚀疲劳裂纹扩展行为研究现状与进展

A Review on Corrosion Fatigue Crack Growth Behavior of Structural Materials in Nuclear Power Plants

综述了核电结构材料腐蚀疲劳裂纹扩展的研究现状及环境、力学、材料等因素的影响规律,讨论了高温高压水环境中考虑环境效应的疲劳裂纹扩展模型,提出了当前核电结构材料高温高压水腐蚀疲劳裂纹扩展机制及模型研究面临的主要问题及未来可能的研究方向。

Structural materials in nuclear power plants are subjected to corrosion fatigue(CF) during long-term service in high temperature pressurized water. The mechanism and data base of CF crack growth are essential to the design, operation and life management of nuclear power plants. This paper reviewed the present research status on CF crack growth behavior. The effect of environmental, mechanical and material’s factors were introduced, while the fatigue crack growth model was discussed by taking the environment effect in high temperature pressurized water into consideration. Challenges and trends for research of fatigue crack growth mechanism and model for structural materials in nuclear power plants were also briefly addressed.