The results show that the fracture of the tow-stage turbine blades is overload fracture.
结果表明，高压二级涡轮叶片的断裂为过载断裂，叶片的断裂与材质或加工无关。
According to the fracture surfaces, it is found that the fracture mode of the two parts is overload fracture and there is obvious stress concentration in the floating piston.
但从现有的断口看，二者均呈大应力过载断裂且浮动活塞明显受力不均。
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