Size effects in miniaturized polycrystalline FCC samples: Strengthening versus weakening

This paper focuses on a computational-experimental analysis of sample geometry dominated and grain dominated size effects in miniaturized polycrystalline FCC components, where the grain size, orientation and grain boundaries play an important role. Experimental and numerical findings elucidate the j...

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Veröffentlicht in:International journal of solids and structures 2006-11, Vol.43 (24), p.7304-7321
Hauptverfasser: Geers, M.G.D., Brekelmans, W.A.M., Janssen, P.J.M.
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container_issue 24
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container_title International journal of solids and structures
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creator Geers, M.G.D.
Brekelmans, W.A.M.
Janssen, P.J.M.
description This paper focuses on a computational-experimental analysis of sample geometry dominated and grain dominated size effects in miniaturized polycrystalline FCC components, where the grain size, orientation and grain boundaries play an important role. Experimental and numerical findings elucidate the joint contribution of first-order and second-order size effects for this type of components. The intrinsic competition between the weakening and strengthening contributions resulting from these effects is commented and further analysed. It is shown that a second-order crystal plasticity model is needed to account for the simultaneous contributions of both size effects.
doi_str_mv 10.1016/j.ijsolstr.2006.05.009
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subjects Crystal plasticity
Miniaturization
Size effects
Strain gradient
title Size effects in miniaturized polycrystalline FCC samples: Strengthening versus weakening
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