Fatigue crack growth behavior of a Zr-Ti-Cu-Ni-Be bulk metallic glass: Role of ambient air environment

摘要

The fatigue crack growth behavior of a Zr_(44)Ti_(11)Ni_(10)Cu_(10)Be_(25) bulk metallic glass (BMG) was measured in an inert dry N_2 envi-ronment. When compared to results measured in ambient air, the present results showed a higher fatigue threshold and lower crack growth rates in the near-threshold region. Such results reveal that there is a significant effect of ambient air in accelerating fatigue crack growth for this BMG.