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在腐蚀介质环境中同时承受交变应力作用的构件,将产生介质腐蚀和疲劳两种机理的联合作用而破坏,通常称之为腐蚀疲劳。腐蚀疲劳的介质环境对金属材料来说是一种特别苛刻的条件。它会不同程度地或者甚至大幅度地降低材料的疲劳强度。因此,开展对金属材料的腐蚀疲劳及其破坏机理的研究,掌握各种材料在不同的介质环境中的抗腐蚀疲劳性能及其变化规律,从而采用合理的、有针对性的措施来提高金属材料的腐蚀疲劳强度。影响腐蚀疲劳的主要因素
In the corrosive media environment simultaneously bear the role of alternating stress components, will have a combination of medium corrosion and fatigue failure of the combination of the two mechanisms, commonly known as corrosion fatigue. Corrosive fatigue media environment for the metal material is a particularly harsh conditions. It can reduce the fatigue strength of the material to varying degrees or even substantially. Therefore, the research on the corrosion fatigue and its failure mechanism of metal materials is carried out, and the anti-corrosion fatigue properties and the variation rules of various materials in different medium environments are grasped so as to adopt reasonable and pertinent measures to improve the corrosion resistance of metal materials Corrosion fatigue strength. The main factor affecting corrosion fatigue