| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
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| Symposium
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Advances in Multi-Principal Element Alloys II
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| Presentation Title |
J-5: A Facile Strengthening Method by Co-doping Boron and Nitrogen in CoCrFeMnNi High-entropy Alloy
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| Author(s) |
Sujung Son, Jungwan Lee, Peyman Asghari-Rad, Gang Hee Gu, Farahnaz Haftlang, Hyoung Seop Kim |
| On-Site Speaker (Planned) |
Sujung Son |
| Abstract Scope |
Doping the interstitial atoms on the high-entropy alloys (HEAs) has been studied by numerous metallurgists to utilize multiple strengthening mechanisms like significant solid solution strengthening, precipitation strengthening, and grain boundary segregation. The study on the HEAs with interstitial atoms has been limited to the HEAs with one type of interstitial atoms such as carbon, nitrogen, and boron. Meanwhile, the advantages of the co-doped high-entropy alloys with several interstitial atoms still remain a lack of understanding. In this presentation, we aimed to discuss the synergetic strengthening mechanisms of the B-N co-doped HEAs. The CoCrFeMnNi HEA with 0.8 at% of B and N was cast and subject to microstructure characterization and mechanical testing. The B-N co-doped HEA exhibits the enhanced yield strength of ~572.3 MPa and UTS of ~878.0 MPa with a ductility of ~49.8%. Co-doping the multiple interstitial atoms can be a feasible strengthening strategy for the diverse HEAs. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, |