Observation of Deformation and Lattice Rotation in a Cu Bicrystal
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- Field, D.P. & Alankar, A. Metall and Mat Trans A (2011) 42: 676. doi:10.1007/s11661-010-0570-2
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The current work examines deformation at grain boundaries from an experimental viewpoint. The orientation images of a pseudointernal surface during interrupted channel die deformations of a Cu bicrystal show the evolution of lattice orientation and crystallite fragmentation near the grain boundary. The experiments demonstrate that a region near the boundary is influenced strongly by neighboring grain deformation and lends support to the development of deformation models that include the effects of boundary character and nonlocal slip system interaction. Two crystal plasticity models of the experiment were implemented with a limited degree of success in modeling the observed behavior.