|About this Abstract
||3rd World Congress on High Entropy Alloys (HEA 2023)
||Design of High Hardness Carbide Reinforced High-entropy Alloys
||Joshua Berry, Yunus Azakli, Olivier M.D.M. Messe, Katerina A. Christofidou, Iain Todd
|On-Site Speaker (Planned)
High Entropy Alloys (HEAs) present an opportunity for the design and development of new wear resistant hardmetals, to replace the conventional WC-Co cemented carbides, used in demanding metal forming applications. Suitable alloy systems require high hardness and wear resistance, including at high temperatures, while retaining ductility for damage tolerance. To streamline the search for a new high-entropy alloy system capable of satisfying the design constraints, a combined machine learning and CALPHAD approach has been undertaken, targeting FCC systems. A set of nine of the hardest predicted FCC solid solution forming HEA compositions from the machine learning model were selected and fabricated, from which four demonstrated suitable microstructure for further carbon reinforcement. Mechanical and thermal assessment of these carbide reinforced alloys will be presented and rationalised through CALPHAD.
This work was supported by Oerlikon AM Europe GmbH, Engineering and Physical Sciences Research Council UK [EP/S022635/1] and Science Foundation Ireland [18/EPSRC-CDT/3584].
||Planned: Metallurgical and Materials Transactions