A metallography and x-ray tomography study of spall damage in ultrapure Al | Zendy

Qi Mo | Zendy; B.X. Bie | Zendy; Fuqi Zhao | Zendy; Changming Hu | Zendy; D. Fan | Zendy; X. X. Ran | Zendy; Xuran Xiao | Zendy; W. G. Yang | Zendy; Peiyuan Li | Zendy; Shuhong Luo | Zendy

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A metallography and x-ray tomography study of spall damage in ultrapure Al

Author(s) -

Qi Mo,

B.X. Bie,

Fuqi Zhao,

Changming Hu,

D. Fan,

X. X. Ran,

Xuran Xiao,

W. G. Yang,

Peiyuan Li,

Shuhong Luo

Publication year - 2014

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4890310

Subject(s) - metallography , materials science , spall , tomography , nucleation , void (composites) , porosity , shock (circulatory) , composite material , optics , physics , microstructure , medicine , thermodynamics , radiology

We characterize spall damage in shock-recovered ultrapure Al with metallography and x-ray tomography. The measured damage profiles in ultrapure Al induced by planar impact at different shock strengths, can be described with a Gaussian function, and showed dependence on shock strengths. Optical metallography is reasonably accurate for damage profile measurements, and agrees within 10–25% with x-ray tomography. Full tomography analysis showed that void size distributions followed a power law with an exponent of γ = 1.5 ± 2.0, which is likely due to void nucleation and growth, and the exponent is considerably smaller than the predictions from percolation models

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