Study on three-point-bending fatigue properties of Cu45Zr45Ag7Al3 amorphous alloy

L K Zhang; D Chen; C G Ye; L C Zhu; Y Zhang

doi:10.1088/2053-1591/ace514

Materials Research Express (Jan 2023)

Study on three-point-bending fatigue properties of Cu45Zr45Ag7Al3 amorphous alloy

L K Zhang,
D Chen,
C G Ye,
L C Zhu,
Y Zhang

Affiliations

L K Zhang: ORCiD; College of Intelligent Manufacturing and Mechanical Engineering, Hunan Institute of Technology , Hengyang 421002, People’s Republic of China
D Chen: College of Mechanical and Vehicle Engineering, Hunan University , Changsha 410082, People’s Republic of China
C G Ye: College of Intelligent Manufacturing and Mechanical Engineering, Hunan Institute of Technology , Hengyang 421002, People’s Republic of China
L C Zhu: College of Intelligent Manufacturing and Mechanical Engineering, Hunan Institute of Technology , Hengyang 421002, People’s Republic of China
Y Zhang: College of Intelligent Manufacturing and Mechanical Engineering, Hunan Institute of Technology , Hengyang 421002, People’s Republic of China

DOI: https://doi.org/10.1088/2053-1591/ace514
Journal volume & issue: Vol. 10, no. 7
p. 075202

Abstract

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In this article, Cu _45 Zr _45 Ag _7 Al _3 amorphous alloys were prepared by copper mold suction casting method and its three-point-bending fatigue performance were researched. The structural characteristics of the alloy were analyzed using x-ray diffraction (XRD), and the fatigue fracture morphology was analyzed using scanning electron microscopy (SEM). The results indicate that the surface morphology of the three-point-bending fatigue fracture mainly includes three regions: the fatigue crack initiation region, the steady-state crack propagation region with typical fatigue stripes and the final rapidly fracture region. The fatigue crack source is micropores ranging in size from 30 to 50 μ m, where numerous shear bands formed. And the fatigue limit of amorphous alloys is 410MPa, which is higher than the four-point-bending fatigue limit.

Published in Materials Research Express

ISSN: 2053-1591 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials; Technology: Chemical technology
Website: https://iopscience.iop.org/journal/2053-1591

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