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X‐ray Microtomography Analysis of Dynamic Damage in Tantalum
Author(s) -
BontazCarion J.,
Pellegrini Y.P.
Publication year - 2006
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200600058
Subject(s) - materials science , x ray microtomography , tantalum , micromechanics , composite material , metallurgy , optics , composite number , physics
With the plate‐impact technique, ductile spallation experiments are carried out on Ta at impact velocities 570, 1039 and 1078 m/s. Samples are soft‐recovered and analyzed by X‐Ray microtomography at the European Synchrotron Radiation Facility. The porosity along the shock direction, and the distribution of the pore volumes are extracted from tri‐dimensional reconstructions of the damaged samples. Quantitative assessment of pore coalescence is made via an inverse power‐law model for the distribution. The decay exponent we associate to coalescence is of order 1.6 in the sample impacted at 1039 m/s.