| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Grain Boundaries, Interfaces, and Surfaces: Fundamental Structure-Property-Performance Relationships
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| Presentation Title |
Stabilized Grain Boundaries in CuTa Alloys and Their Resulting Properties |
| Author(s) |
Kris Darling, Billy Chad Hornbuckle, Anthony Roberts, Anit Giri, Sean Fudger, Tom Luckenbaugh, Phil Jannotti , Steven Dean, Dan Casem, Scott Turnage, Cyril Williams |
| On-Site Speaker (Planned) |
Kris Darling |
| Abstract Scope |
The great debate within the nanocrystalline field for the last decade has been whether thermodynamic or kinetics stabilization is the best approach for maintaining grain size. However, the real question should be if the grain boundaries can be stabilized what unique properties besides those generally associated with nanocrystalline materials, i.e. increased strength and radiation tolerance, could be revealed? Furthermore, how far or to what extremes could these stabilized interfaces be pushed? This talk will attempt to answer such questions by discussing the behavior of CuTa when exposed to extremes in temperature from cryogenic to thousands of hours at elevated temperatures. Additionally, the mechanical response moving from creep rates to shock rates will be presented and reveal the underlying mechanism responsible for CuTa’s unique behavior, and how this can be harnessed in other nanocrystalline systems. |