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Effect of sample geometry on the deformation behavior of Zr-based bulk metallic glass

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Abstract

In this study, effect of geometrical confinement on the deformation behavior of Zr57.5Cu11.2Ni13.8Al17.5 bulk metallic glass (BMG) was investigated. For this purpose flat top conical samples with different semi-vertex angles (α) were prepared for quasi-static compression tests. It was observed that as the geometry of the sample is slightly changed from cylindrical shape (for which α = 0°) to conical shape (for which α > 0°), a brittle BMG sample tends to deform in a ductile manner due to the geometrical constraint-induced complex multi-axial stress distribution in the sample. In brittle Zr57.5Cu11.2Ni13.8Al17.5 specimen with α = 5°, plastic deformation of about 4% was observed due to the formation of extensive intersecting shear bands.

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Authors and Affiliations

  1. Powder Metallurgy Lab, Department of Chemical and Materials Engineering, Pakistan Institute of Engineering and Applied Sciences, P.O. Nilore, Islamabad, Pakistan

    N. H. Tariq & B. A. Hasan

  2. Physics Division, Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, Pakistan

    J. I. Akhter

Authors
  1. N. H. Tariq
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  2. J. I. Akhter
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  3. B. A. Hasan
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Correspondence to N. H. Tariq.

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Tariq, N.H., Akhter, J.I. & Hasan, B.A. Effect of sample geometry on the deformation behavior of Zr-based bulk metallic glass. J Mater Sci 45, 6170–6173 (2010). https://doi.org/10.1007/s10853-010-4707-x

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  • DOI: https://doi.org/10.1007/s10853-010-4707-x

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