About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
High Entropy Alloys VIII
|
Presentation Title |
J-90: Enhanced Mechanical Properties by Nitrogen Addition in N-CoCrNi and N-CoCrFeMnNi Compositionally Complex Alloy |
Author(s) |
Dennis Edgard Jodi, Choi Nuri, Joohyun Park, Nokeun Park, Timothy Alexander Listyawan |
On-Site Speaker (Planned) |
Timothy Alexander Listyawan |
Abstract Scope |
In this study, we investigated the effect of nitrogen addition on phase formation and mechanical properties in the compositionally complex alloy (CCA) of N-CoCrNi and N-CoCrFeMnNi. Both the recrystallized N-CoCrNi and N-CoCrFeMnNi exhibited the formation of Cr<sub>2</sub>N precipitate on the microstructure. The Cr<sub>2</sub>N, combined with the presence of interstitial nitrogen in the matrix, was observed to hinder the grain growth of the face-centered cubic matrix, leading to the formation of fine grain sizes. The addition of nitrogen was also observed to improve the mechanical properties of N-CoCrNi and N-CoCrFeMnNi. This increase occurred as a result of various strengthening mechanisms of solid-solution, Hall-Petch strengthening, and precipitation strengthening by the addition of nitrogen. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume |