About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
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| Symposium
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Advancing the Frontier of Powder Materials Processing and Sintering: A MPMD/EPD Symposium in Honor of Eugene Olevsky
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| Presentation Title |
Producing functionally graded Al-W composites for studying material behavior under extreme conditions |
| Author(s) |
Colin Meisner, Javier Garay |
| On-Site Speaker (Planned) |
Colin Meisner |
| Abstract Scope |
Functionally graded materials (FGMs) feature controllably varied mechanical, electrical, and thermal properties across their structure. They can be fabricated using methods such as pressureless sintering, hot pressing, additive manufacturing, and current activated pressure-assisted densification (CAPAD). FGMs with tailored density gradients are useful for generating controlled pressure drives in high-strain experiments. These drives, essential for probing material behavior under extreme conditions, can be realized using gradient-density impactors. Density gradients create varying shock impedances, producing gradual pressure ramps ideal for extended dynamic loading. We fabricated fully-dense, porosity-free Al–W composites spanning a fourfold density range (2.7–11 g/cm³), leveraging the density contrast between aluminum and tungsten while avoiding intermetallics. To address their disparate melting points, we use CAPAD informed by Al-driven densification. Under dynamic compression, the materials produced shock-ramp profiles consistent with hydrodynamic simulations. This scalable approach enables precision-controlled loading paths and supports development of customized pressure drives for high-energy-density physics and materials science. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, Modeling and Simulation, Aluminum |