Thermomechanical Coupling Effects In Small
Volumes Under High Loading Rates
Author(s)
Y. Katz, K.B. Yoder & W.W. Gerberich
Abstract
Adiabatic Shear Bands (ASB) provide an additional plastic flow mechanism under
high loading rates. This localized deformation behavior has been already well
established. Generally, substantial efforts are currently invested into the
understanding of small volume mechanical properties. As such the present study
objective is the search for critical experiments regarding ASB initiation and
propagation aided by nanomechanical testing. Materials, which included a glassy
polymer (PMMA), poly crystalline metallic bulk surfaces (4340 steel and Pb-Sn
alloy) and a 1 jum thin film of Ti on silicon, were investigated using
nanoindentation and microscratch tests.
The study revealed thermomechanical coupling effects associated with
localized deformation and damage evo
Keywords
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