| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior at the Nanoscale V
|
| Presentation Title |
Influence of Mechanical Loading on Nanocrystalline Stabilized Alloys |
| Author(s) |
Gregory B. Thompson, Jonathan Priedeman, Thomas Koenig, Xuyang Zhou, B. Chad Hornbuckle, Kris Darling, Sean Fudger, Ankit Gupta, Garritt Tucker |
| On-Site Speaker (Planned) |
Gregory B. Thompson |
| Abstract Scope |
The partitioning of solutes to nanocrystalline grain boundaries (GBs) has shown the ability to mitigate grain growth. This stability mechanism is either as a reduction of the thermodynamic GB energy and/or a kinetic constraint of the GBs by pinning. In the vast majority of studies, stability has been explicitly investigated as a function of temperature. This work extends these investigations to mechanical loading. The first case is Cu(Nb), an alloy that has shown thermal stabilization. Upon loading at 200C, 400C, and 600C, the alloy exhibits a reduction in strength. In contrast, Cu(Ta) does not show this trend, with these two alloys to be compared. A complementary study of Ni(P) will then be discussed. Depending upon the prior heat treatment, the Ni(P) can either exhibit thermodynamic or Zener pinning stabilization enabling a single alloy type to compare different stability mechanisms with respect to mechanical loading effects. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |