Investigation of deformation behavior of Zr-Ti-Ni-Cu-Be bulk metallic glass containing nanocrystals
Date
2005
Authors
Wang, Gang
Shen, J.
Qin, Qing Hua
Sun, J. F.
Stachurski, Zbigniew
Zhou, B. D.
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Volume Title
Publisher
Kluwer Academic Publishers
Abstract
Zr41.25Ti13.75Ni10Cu12.5Be 22.5 (at.%) bulk metallic glass (BMG) is annealed at 676 K for various times. The influence of the microstructural evolution on the mechanical properties is studied by tensile test and micro hardness test at room temperature. The structural relaxation due to the short time annealing does not affect the deformation behavior of the BMG. The nanocrystallization inducing embrittlement is due to the presence of nano-scale particles promoting the crack forming and propagating during the tensile deformation. The existence of nano-scale particles also enhances the viscosity of the amorphous phase within the shear band and even obstructs the formation of the shear band at the indenter tip, which results in a strengthening phenomenon in the annealed BMG under the indentation load.
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Keywords
Keywords: Crack propagation; Embrittlement; Indentation; Mechanical properties; Microstructure; Nanostructured materials; Tensile strength; Titanium; Zirconia; Deformation behavior; Micr hardness; Shear band; Glass
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Source
Journal of Materials Science
Type
Journal article
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2037-12-31
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