About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
2020 Technical Division Student Poster Contest
|
Presentation Title |
SPU-21: Strengthening Mechanisms of Ultra-strong Fe-Zr Solid Solution Alloys |
Author(s) |
Sidharth G. Krishnamoorthi, Ruizhe Su, Yifan Zhang, Xinghang Zhang |
On-Site Speaker (Planned) |
Sidharth G. Krishnamoorthi |
Abstract Scope |
Nanocrystalline metals have been widely explored due to their unique mechanical behaviors. Grain boundaries are known to be barriers to the transmission of dislocations and hence grain refinement can lead to improved mechanical strength. In this study, we show that the hardness of Fe can be significantly increased by using Zr to form supersaturated solid solution alloys. Nanoindentation tests show that the hardness of Fe-Zr solution alloy films can exceed 9 GPa with an average grain size of 20 nm. Transmission electron microscopy studies show that the grain size of Fe-Zr decreases with increasing Zr content. The influence of microstructure on mechanical properties of Fe-Zr films is discussed. Our findings could provide general implications on the design of high-strength Fe alloys. |
Proceedings Inclusion? |
Undecided |