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Length Scale Effect on Deformation and Failure Mechanisms of Ultra-Fine Grained Aluminum
Published online by Cambridge University Press: 26 February 2011
Abstract
The deformation and failure processes in ultra-fine and nanograined metals over different length scales have been probed using transmission electron microscopy (TEM) and scanning electron microscopy (SEM) in combination with a micromechanical in situ straining device. This novel straining device affords the opportunity to directly correlate the macroscopic mechanical properties with the microscopic deformation and failure mechanisms. Through use of this device it has been shown that increased film thickness results in a transition between limited plasticity and intergranular fracture to global plasticity and shear failure for deposited aluminum samples of similar grain size but different thickness.
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- Copyright © Materials Research Society 2006
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