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Speaker: Ian McCue, Johns Hopkins University

January 31 @ 11:00 am - 12:00 pm

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Speaker: Ian McCue

Affiliation: Johns Hopkins University

ABSTRACT:

Decades of research have been devoted to developing nanostructured materials for applications ranging from heterogeneous catalysts to high-strength structures. However, fabrication techniques for these materials are frequently resource-intensive, and cannot be translated into commercial-scale processing. I will describe a scalable route to creating nanostructured materials and controlling their microstructure using liquid metal dealloying (LMD): a self-organization process that relies on selective dissolution to drive the emergence of a complex architecture with a controllable morphology and feature size. Unlike conventional aqueous dealloying, LMD may be used to synthesize bulk quantities of fully-dense nanocomposite materials. I will identify the key kinetic parameters controlling pattern formation in LMD and discuss how they may be tuned to fabricate materials with a variety of morphologies – globular, lamellar, and bicontinuous – and a large breadth of microstructural length scales – 30 nm to 10 µm. I will then give an overview of the promising thermo-mechanical properties of these new materials, including high thermal stability, high strength, and the potential to work harden. These results highlight opportunities for designing and synthesizing bulk nanocomposite metals with superior properties by tuning their microstructure morphology.

Details

Date:
January 31
Time:
11:00 am - 12:00 pm
Event Categories:
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Venue

EB1 – Room 1011
911 Partners Way
Raleigh, NC 27695-7907 United States

Organizer

MSE Department
Phone:
919.515.2377
Website:
https://www.mse.ncsu.edu

Other

Speaker
Ian McCue
Host
Beth Dickey