About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Deformation-induced Microstructural Evolution during Solid Phase Processing: Experimental and Computational Studies
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Presentation Title |
ARB Processing of Bulk Fe-Al and Ti-Al Nano-metallic Laminates |
Author(s) |
Thomas J. Nizolek, Rodney McCabe, Yifan Zhang, Daniel Savage, Cody Miller, Carl Osborn, Sean Raybon, John Carpenter, Laurent Capolungo |
On-Site Speaker (Planned) |
Thomas J. Nizolek |
Abstract Scope |
Accumulative roll bonding (ARB) is often touted as an ‘industrially relevant’ processing method for creating bi-phase nanolamellar composites. Yet stable co-deformation and refinement of lamellar structures has proven challenging for all but a few primarily immiscible material systems (Cu-Nb, Fe-Ag, etc.). The ability to produce technologically useful, engineering-scale nanolaminates using metals relevant to the automotive and aerospace industries (e.g. Fe-Al or Ti-Al) has remained elusive due to the propensity of these systems to either 1) neck and fragment during large-strain deformation or 2) react to form unwanted brittle intermetallic phases during processing. Here we demonstrate that ARB can be used to synthesize nanolamellar Fe-Al and Ti-Al composites without significant intermetallic formation or loss of layer continuity if both constituent mechanical properties and processing conditions are carefully controlled. These nanolaminates display remarkable flow stability during processing and possess exceptional mechanical properties (flow stresses >2 GPa at layer thicknesses of 25 nanometers). |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Nanotechnology, Composites |