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在航空发动机结构中,一些部件在高温状态下工作,如涡轮盘、叶片、燃烧室等,除承受一般机械应力外,还同时受到环境的侵袭。研究和使用的共同经验也表明:高温部件的失效很少单纯由于疲劳或蠕变断裂所造成,常常起因于疲劳—蠕变—环境三方面的交互作用。其中环境腐蚀又易于成为疲劳起始源。目前对热端部件的设计和选材还只限于考虑疲劳—蠕变交互作用的性能。六十年代初诞生的描述低
In the aeroengine structure, some components work under high temperature conditions, such as turbine disks, vanes, combustion chambers and the like, besides being subjected to general mechanical stress, they are also subjected to environmental attacks. The common experience of research and application also shows that failure of high-temperature components is seldom caused by fatigue or creep rupture, often resulting from the interaction of fatigue-creep-environment. Among them, environmental corrosion easily becomes the source of fatigue. The current design and selection of hot-end components is also limited to considering the performance of fatigue-creep interaction. The description of the birth of the early 1960s is low