|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Multiscale Architectured Materials (MAM II): Tailoring Mechanical Incompatibility for Superior Properties
||The Development of Deformation Heterogeneity in Cu/Nb Lamellar Composites Predicted by Nonlocal Single Crystal Plasticity
||Jason Mayeur, Irene Beyerlein
|On-Site Speaker (Planned)
In this talk we present a computational study of the development of deformation heterogeneity in Cu/Nb multilayered lamellar composites produced by accumulative roll-bonding (ARB). ARB is a manufacturing process capable of producing bulk multilayered lamellar composites with layer thicknesses ranging from mm to nm. ARB lamellar composites are distinct from those produced by physical vapor deposition in terms of the specimen scale and layer thicknesses that are attainable as well as the predominant texture and heterophase interface character. Crystal plasticity simulations of multilayer statistical volume elements are performed to characterize the development of heterogeneities at the subgranular, granular, and layer scales. A nonlocal crystal plasticity constitutive framework is used in order to assess the role of lattice curvature and geometrically necessary dislocations on the evolution of the heterogeneous fields and comparisons are made to results obtained using a classical local theory.