About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Heterostructured and Gradient Materials (HGM IV): Tailoring Heterogeneity for Superior Properties
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Presentation Title |
Interface Affected Plasticity in Accumulative Roll Bonded FCC/BCC Metallic Laminates
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Author(s) |
Rodney J. McCabe, Matthew Schneider, Jonathan Gigax, Nan Li, Thomas Nizolek, John Carpenter |
On-Site Speaker (Planned) |
Rodney J. McCabe |
Abstract Scope |
Accumulative roll bonding (ARB) is a severe plastic deformation process used to produce bulk bimetallic laminates with average layer thicknesses ranging from hundreds of microns down to tens of nanometers. During deformation of ARB laminates, both during processing and post processing, the effects of bi-phase interfaces and co-deformation (or lack thereof) across these interfaces results in peculiar microstructures and properties. We use electron backscatter diffraction (EBSD) and transmission Kikuchi diffraction (TKD) along with in situ straining SEM/TEM to examine the effects of the interface on microstructure evolution during deformation. During processing, grains directly abutting interfaces evolve orientation distributions differently than grains away from the interface. In addition, we show that ARB materials may fail due to void formation, shear banding, or kink banding depending on the average layer thickness and loading state. We examine how the interactions of deformation defects with interfaces contributes to these behaviors. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Mechanical Properties, |