Journal
PHYSICS OF METALS AND METALLOGRAPHY
Volume 113, Issue 4, Pages 418-425Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0031918X12040059
Keywords
shock waves; high-strain-rate plastic deformation; Al-4 wt % Cu alloy; structure
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Optical metallography, scanning and transmission electron microscopy, and microhardness measurements have been used to layer-by-layer study the structure of an artificially aged Al-4 wt % Cu alloy subjected to loading by spherically converging shock waves. It has been established that the high-strain-rate plastic deformation of this alloy, when using this mode of loading, occurs via intragrain dislocation slip and, in the middle and deep layers, also via the formation of localized-deformation bands at grain boundaries. The intragrain slip occurs inhomogeneously, by the formation of shear bands. The temperature distribution in various layers of the sample has been estimated.
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