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Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Advances in Multi-Principal Element Alloys V: Mechanical Behavior
Presentation Title Creep behavior of CoCrNi-based alloys
Author(s) Sakshi Bajpai, Mahsa Amiri, Robert Hayes, Diran Apelian, Enrique Lavernia
On-Site Speaker (Planned) Sakshi Bajpai
Abstract Scope CoCrNi medium-entropy alloys are recognized for their superior tensile strength and fracture toughness; however, their high-temperature creep behavior remains insufficiently explored. This study investigates the creep response of induction-melted CoCrNi and CoCrNi–Al–Ti alloys under both as-melted and homogenized conditions. Creep experiments were conducted at temperatures ranging from 700 °C to 900 °C. The introduction of Al and Ti led to a pronounced modification in the creep performance, attributed to microstructural changes induced by alloying. The observed variations in creep resistance as a function of alloy composition are analyzed and discussed in detail. The content of interstitial impurities was also taken into account in the analysis. Scanning and transmission electron microscopy, combined with energy-dispersive spectroscopy, were employed to elucidate the underlying mechanisms leading to the observed trend in creep behavior.
Proceedings Inclusion? Planned:
Keywords High-Entropy Alloys, Mechanical Properties, Characterization

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