Shock wave response of a zirconium-based bulk metallic glass and its composite | Zendy

Shiming Zhuang | Zendy; Jun Lu | Zendy; G. Ravichandran | Zendy

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Shock wave response of a zirconium-based bulk metallic glass and its composite

Author(s) -

Shiming Zhuang,

Jun Lu,

G. Ravichandran

Publication year - 2002

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.1485300

Subject(s) - materials science , spall , composite material , shock (circulatory) , shock wave , zirconium , strain rate , amorphous metal , compression (physics) , phase (matter) , shear (geology) , zirconium alloy , metal , deformation (meteorology) , metallurgy , alloy , chemistry , thermodynamics , medicine , physics , organic chemistry

A zirconium-based bulk metallic glass, Zr41.2Ti13.8Cu12.5Ni10Be22.5 (Vit 1), and its composite, Zr56.3Ti13.8Cu6.9Ni5.6Nb5.0Be12.5 (β-Vit), were subjected to planar impact loading. A surprisingly low amplitude elastic precursor and bulk wave, corresponding to the elastic response of the “frozen structure” of the intact metallic glasses, were observed to precede the rate-dependent large deformation shock wave. A concave downward curvature after the initial increase of the Us–Up shock Hugoniots suggests that a phase-change-like transition occurred during shock compression. Further, compression damage occurred due to the shear localization. The spalling in Vit 1 was induced by shear localization, while in β-Vit, it was due to debonding of the β-phase boundary from the matrix. The spall strengths at strain rate of 2×106 s−1 were determined to be 2.35 and 2.11 GPa for Vit 1 and β-Vit, respectively.

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