About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Multi-Principal Element Alloys II
|
Presentation Title |
J-74: Study of the Grain Growth Kinetics and Hall-Petch Relationship in Fe-rich Multi-principal Element Alloys |
Author(s) |
David Silva, Gustavo Bertoli, Michael J. Kaufman, Amy J. Clarke, Francisco G. Coury, Claudemiro Bolfarini |
On-Site Speaker (Planned) |
David Silva |
Abstract Scope |
Recently, multi-principal element alloys (MPEAs) derived from Cantor's alloy (CoCrFeNiMn) with varying Fe content have been investigated theoretically and experimentally. In relation to other strengthening mechanisms, grain refinement tends to be the most effective to increase strength with smaller plasticity losses. In this work, the recrystallization behavior, grain growth kinetics, and corresponding hardness variation of three FCC MPEAs are studied. The annealed and deformed samples were characterized to observe the active deformation mechanism on each composition. Experimental results indicate that the grain size and hardness of these MPEAs follow the Hall-Petch equation. The activated deformation mechanism is heavily dependent on the composition. The grain growth exponent n, kinetic constant k, and activation energy for grain growth QG of the Fe-rich MPEAs were calculated. These values will be discussed and compared to other MPEAs systems in the literature. |
Proceedings Inclusion? |
Planned: |