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-22: Design of Novel AlCoCrNbNi Eutectic High Entropy Alloy with Adequate Strength, Ductility, and Oxidation Resistance |
Author(s) |
Lavanya Raman, Shweta Sharma, Gagan Goyal, Saurabh Singh, Yu Zhang, Na Liu, Amin Nozariasbmarz, Bed Poudel, Ravi Sankar Kottada, Wenjie Li, Shashank Priya |
On-Site Speaker (Planned) |
Lavanya Raman |
Abstract Scope |
Recently, eutectic high entropy alloys (EHEAs) consisting of hard and soft phases have gained great attention due to the synergy of high strength and ductility for various industrial applications. In this study, we have developed Al-Co-Cr-Nb-Ni eutectic alloy system, where the Al/Nb ratio is tuned to tailor the eutectic microstructure. The as-cast EHEAs composed of a soft fcc matrix with a hard Laves phase and B2 phases, displaying an optimum combination of strength and ductility. A two phase to triple phase eutectic microstructure is obtained at high Al/Nb ratio. Furthermore, an excellent oxidation resistance was observed with high Al/Nb ratio at 1173 K for 100 h. This new alloy design strategy can be adapted to other HEA families with simultaneous high strength and ductility along with better oxidation resistance. |
Proceedings Inclusion? |
Planned: |
Keywords |
Other, |