|About this Abstract
||3rd World Congress on High Entropy Alloys (HEA 2023)
||Leveraging Metastability in High Entropy Alloy Design for Grain Refinement in Additive Manufacturing
||Akane Wakai, Atieh Moridi
|On-Site Speaker (Planned)
The use of additive manufacturing (AM) techniques enables the fabrication of intricate structures with customized properties. However, the presence of coarse grains during solidification restricts the mechanical performance of AM-produced components. This study aims to exploit the metastable phase transformations within high entropy alloys (HEAs) to enhance grain refinement during AM without the need for post processing. Specifically, by varying the Mn content in a FeMnCoCr HEA, we can systematically evaluate the effect of solidification pathway on microstructure and properties. This comprehensive exploration combines thermodynamic modeling, operando synchrotron X-ray diffraction, multiscale microstructural analysis, and mechanical testing to develop advanced HEAs for AM. These findings provide insight into the solidification fundamentals of HEAs and help establish an alloy design guideline to enhance mechanical properties in AM and contribute to pushing the boundaries of AM technology.
||Planned: Metallurgical and Materials Transactions