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 |
Microstructure Modification in Sintered Copper-tantalum Composites |
Author(s) |
Charles Borenstein, Brady Butler, James D. Paramore, Karl T. Hartwig, Michael J. Demkowicz |
On-Site Speaker (Planned) |
Charles Borenstein |
Abstract Scope |
We investigated the microstructures achievable by equal channel angular extrusion (ECAE) of composites of copper (Cu) and tantalum (Ta). These composites were produced with a tantalum volume percentage ranging from 25% to 75% by sintering a blend of copper and tantalum powders. The composites were prepared with a minor amount of titanium to facilitate interphase bonding and extrusion. The sintered composites were then extruded via several ECAE routes, and the resulting microstructures were characterized by scanning electron microscopy (SEM). Mechanical properties were determined by tensile testing and nanoindentation. Titanium modification was found to markedly improve the strength and extrudability of the composite by softening the tantalum phase. We will discuss the implications of our work for processing bulk multiphase composites with designer microstructures and superior mechanical properties. |
Proceedings Inclusion? |
Planned: |
Keywords |
Shaping and Forming, Composites, |