About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
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Presentation Title |
Stochastic Nanoarchitected Metals with Ultra-high Energy Absorption |
Author(s) |
Hanxun Jin, Wenxin Zhang, Julia R. Greer |
On-Site Speaker (Planned) |
Hanxun Jin |
Abstract Scope |
Advancements in technology demand innovative materials with superior high energy absorption capabilities. Here, we introduce our strategy using stochastically nanoarchitected metals with spinodal topology. We fabricated spinodoid nickels using novel nanoscale hydrogel-infusion additive manufacturing (nano-HIAM) technique. Briefly, a hydrogel scaffold is fabricated through two-photon lithography, then infused with a nickel nitrate solution and thermally treated to yield pure nickel. We performed in-situ nanomechanical experiments to understand their structural-property relationships. Our spinodoid nickel structures, with an average grain size and beam diameter of ~60 nm and ~250 nm respectively, demonstrated an unprecedented energy absorption capacity of 20 J/g, surpassing most existing bulk and architected metals. We attribute this ultra-high energy absorption to the “smaller is stronger” nanoscale size effect, enhancing the plateau stress (~75 MPa), and the nodeless spinodal architecture that prevents the catastrophic failure. Potential applications of our material include aerospace protective coatings and nanoporous pollutant filters. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Nanotechnology, Mechanical Properties |