About this Abstract |
Meeting |
2nd World Congress on High Entropy Alloys (HEA 2021)
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Symposium
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2nd World Congress on High Entropy Alloys (HEA 2021)
|
Presentation Title |
Recent Progress in the CoCrNi Alloy and Derived Systems |
Author(s) |
Sakshi Bajpai, Benjamin MacDonald, Timothy Rupert, Horst Hahn, Diran Apelian |
On-Site Speaker (Planned) |
Sakshi Bajpai |
Abstract Scope |
The equiatomic CoCrNi alloy has gained a lot of attention in recent years owing to its exceptional mechanical properties, particularly at cryogenic temperatures. Like the equiatomic CoCrFeNiMn Cantor alloy, from which it was derived, the CoCrNi ternary possesses low stacking fault energy that leads to complex deformation modes, in particular, the ease of twinning activation at ambient temperatures and increased strain. Furthermore, chemical short-range order and FCC-HCP transitions have recently been verified in this alloy and are key factors contributing to the alloy’s properties. Efforts are being made to further enhance the performance of these alloys for demanding structural applications using two different approaches: thermomechanical processing and alloying additions. Through this presentation, the fundamental mechanisms of the CoCrNi alloy will be established. Recent studies on their process-driven microstructural evolutions, minor alloying additions to the base CoCrNi ternary, and the ongoing efforts at the University of California, Irvine will be discussed. |
Proceedings Inclusion? |
Undecided |