Author/Authors :
Wang، نويسنده , , G.Y. and Liaw، نويسنده , , P.K. and Yokoyama، نويسنده , , Y. and Peker، نويسنده , , A. and Peter، نويسنده , , W.H. and Yang، نويسنده , , B. and Freels، نويسنده , , M. and Zhang، نويسنده , , Z.Y. and Keppens، نويسنده , , V. and Hermann، نويسنده , , William R. and Buchanan، نويسنده , , R.A. and Liu، نويسنده , , C.T and Brooks، نويسنده , , C.R.، نويسنده ,
Abstract :
High-cycle fatigue (HCF) experiments were conducted on zirconium (Zr)-based bulk-metallic glasses (BMGs): Zr50Cu40Al10, Zr50Cu30Al10Ni10, Zr41.2Ti13.8Cu12.5Ni10Be22.5, and Zr50Cu37Al10Pd3 (in atomic percent) in air. The fatigue-endurance limit of Zr50Cu37Al10Pd3 was significantly greater than those of Zr50Cu40Al10, Zr50Cu30Al10Ni10, and Zr41.2Ti13.8Cu12.5Ni10Be22.5. The resonant ultrasound spectroscopy technique was employed to determine the Poissonʹs ratios, shear moduli, and bulk moduli of these BMGs. The ratio of the fatigue-endurance limit to the tensile strength increases with increasing Poissonʹs ratio. A possible relationship between the ratio of the fatigue-endurance limit to the tensile strength and the ratio of the shear modulus to the bulk modulus or Poissonʹs ratio will be discussed.
Keywords :
F. Electron microscopy , B. Fatigue resistance and crack growth , B. Glasses , scanning , metallic , C. Casting
