About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Mechanical Behavior at the Nanoscale VII
|
Presentation Title |
Role of Interface Attributes on Strength and Plasticity of Advanced Nano Laminates |
Author(s) |
Rodney J. McCabe, Yifan Zhang, Thomas J Nizolek, Nan Li, Laurent Capolungo |
On-Site Speaker (Planned) |
Rodney J. McCabe |
Abstract Scope |
The mechanical properties of metallic laminates depend on the properties of the constituent phases, layer thickness and morphology, and the properties of the interfaces. We investigate the deformation behavior and concurrent microstructure evolution of four different NMLs with dissimilar interface properties using in-situ micro-mechanical testing and characterization by EBSD, TKD, and TEM. Our results clearly show that the deformation behaviors of NMLs are greatly affected by interface attributes such as interface orientation, interface morphology, and interface strength in addition to interface spacing. NMLs fail via kinking, interface shearing/sliding, and barreling, respectively, when loading direction is parallel, at 45°, and normal to the layer interfaces. Moreover, contrary to predictions that weaker interfaces strengthen NMLs more effectively, we show that relatively strong interfaces can simultaneously ensure high strength and good ductility of NMLs. This work brings a fresh perspective to the design of advanced metallic materials via tuning interface properties. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Mechanical Properties, Other |