Failure Analysis of 2Cr13 Stainless Steel Blade in a Low Pressure Steam Turbine

The failure mode and causes of low-pressure rotor 2Cr13 stainless steel blades in a power plant steam turbine were analyzed using SEM,EDS,metallographic techniques and mechanical property tests.The fracture characteristics and mechanism of the blades were discussed.The results show that the failure mode is corrosion fatigue which was caused by the synergistic influence of off quality of the raw material and work condition of corrosion fatigue.