Zr_<55>Cu_<30>Ni_<30>Al_<10> bulk metallic glass (BMG) is known to show high strength and high corrosion resistance. In the present study, 4-point bending fatigue tests environment have been conducted in air and in water to investigate the effect of corrosion on fatigue properties of the BMG Fracture surface and tensile-loaded surface were observed by scanning electron microscope (SEM) and Energy Dispersive X-ray Spectroscopy (EDS). Experimental results give a significant decrease of fatigue limit in water compared with air environment. In addition, fatigue test in water environment shows a significant corrosion of the tensile-loaded surface. A detailed SEM and EDS analysis has emphasized an increase area subjected to corrosion for specimens in water compared with in air. Finally, corrosion leads to the formation of local stress concentration, resulting in decrease of the fatigue limit of Zr_<55>Cu_<30>Ni_<30>Al_<10>.
