Metals (Jan 2021)

Fatigue Behavior of Zr<sub>58</sub>Cu<sub>15.46</sub>Ni<sub>12.74</sub>Al<sub>10.34</sub>Nb<sub>2.76</sub>Y<sub>0.5</sub> Bulk Metallic Glass Fabricated by Industrial-Grade Zirconium Raw Material

  • Shichao Zhou,
  • Tao Zhang,
  • Lugee Li,
  • Jiedan Yang,
  • Min Zhang,
  • Chengyong Wang,
  • Yong Zhang

DOI
https://doi.org/10.3390/met11020187
Journal volume & issue
Vol. 11, no. 2
p. 187

Abstract

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In this work, the fatigue behavior of a low-cost Zr58Cu15.46Ni12.74Al10.34Nb2.76Y0.5 (at%) bulk metallic glass (BMG) fabricated by industrial-grade Zirconium raw material was investigated under three-point bending loading mode. X-ray, fatigue tests under different stress amplitude and fatigue fractography were conducted in order to characterize the amorphous structure, fatigue stress-life (S-N) curve and fracture mechanism, respectively. It is found that the X-ray diffraction (XRD) result showed a fully amorphous structure due to high glass-forming ability, cracks initiated from inclusions near the rectangular corners at tensile surfaces and the fatigue endurance limit (~168 MPa) and fatigue ratio (~0.13) termed as fatigue endurance limit divided by ultimate tensile strength in stress amplitude were comparable to the similar BMG prepared by high pure raw materials.

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