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Filtering by: Creator Launey, M. E. Rights Statement Copyright Not Evaluated

Quantification of free volume differences in a Zr₄₄Ti₁₁Ni₁₀Cu₁₀Be₂₅ bulk amorphous alloy

Creator:

Launey, M. E., Kruzic, J. J., Li, C., and Busch, R.

Abstract:

Deformation of metallic glasses requires the existence of free volume to allow atomic movement under mechanical loading. Accordingly, quantification of the free volume state of the alloy is crucial to understand it's mechanical behavior. By annealing below the glass transition temperature, the free volume of a Zr₄₄Ti₁₁Ni₁₀Cu₁₀Be₂₅ bulk metallic glass...

Resource Type:

Article
Characterization of fatigue-induced free volume changes in bulk metallic glass using positron annihilation spectroscopy

Creator:

Vallery, R. S., Liu, M., Gidley, D. W., Launey, M. E., and Kruzic, J. J.

Abstract:

Depth-profiled Doppler broadening spectroscopy of positron annihilation on the cyclic fatigue-induced fracture surfaces of three amorphous Zr₄₄Ti₁₁Ni₁₀Cu₁₀Be₂₅ metallic glass specimens reveals the presence of a 30–50 nm layer of increased free volume that is generated by the propagating fatigue crack tip. The presence and character of this fatigue transformation zone...

Resource Type:

Article