Authors:
Tobias Edtmaier (TU Wien, Austria)
Sivagnana Venkatesh Kumaran (ArcerlorMittal, Spain)
José Manuel Torralba (IMDEA Materials Institute, Spain)
Alberto Meza (IMDEA Materials Institute, Spain)
Abstract:
High-entropy alloys (HEAs) have attracted significant attention in recent years due to their unique microstructures and exceptional mechanical properties. Among these, biphasic HEAs (FCC+BCC phases) offer a promising balance of strength and ductility, especially when their phases are precisely tailored. In this study, Laser Powder Bed Fusion (LPBF) is employed to fabricate two Al-containing biphasic HEAs from commodity powders, followed by post-processing heat treatments involving solution treatment and aging. These treatments are designed to finely disperse the BCC phase as precipitates within the FCC matrix, thereby enhancing mechanical strength and hardness. Microstructural characterization was performed by SEM, EDS, EBSD, and TEM explorations, while the mechanical performance was assessed by hardness measurements, profilometry-based indentation plastometry (PIP), and micro-compression tests at room and high temperatures.
DOI:
https://doi.org/10.59499/EP256767921
