| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation Induced Microstructural Modification
|
| Presentation Title |
Evolution of Mechanical Properties and Microstructure in Accumulative Roll Bonded FCC/BCC Metallic Composites |
| Author(s) |
Thomas J. Nizolek, Daniel R Coughlin, Cody Miller, Nan Li, Rodney J McCabe, John S Carpenter |
| On-Site Speaker (Planned) |
Thomas J. Nizolek |
| Abstract Scope |
Accumulative roll bonding (ARB) is a severe plastic deformation technique used to synthesize metallic laminates with layer thicknesses ranging from the millimeter scale to the sub-micron scale. Here we use ARB to create metallic composites consisting of alternating layers of BCC iron and an FCC metal (either Cu, Ag, or Al). Depending on the processing route and the constituent phase flow stress mismatch, the composite material produced contains either 1) continuous iron and FCC metal layers or 2) fragments of iron layers in an FCC metal matrix as a result of necking and shear localization. We use nano-indentation to obtain phase resolved mechanical properties and bulk mechanical testing to measure the effect of layer morphology on the composite mechanical properties. The influence of grain size, layer continuity, and constituent phase flow stress mismatch on deformation during both processing and subsequent mechanical testing will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, Mechanical Properties, Other |