The aircraft engine casing, a pivotal component, is prone to early cracking during service, severely compromising the safety and lifespan of aerial vehicles. This study delved into the cracking mechanism at the lap component of aeroengine inner casing during service by examining the microstructural characteristics of specimens before and after service, alongside an analysis of microstructural evolution and mechanical properties under simulated service conditions. Experimental findings indicated that, post-service, a small number of locations in the specimens exhibited the adhesion of Mo-rich p...
