Authors:
A. Meza (1), A. Alonso (1,2), J.M. Torralba (1,2), L. García de la Cruz (2)
1- IMDEA Materials Institute, Spain
2- Universidad Carlos III de Madrid, Spain
Abstract:
High entropy alloys (HEAs) are researched due to their distinct microstructures and impressive mechanical performance, which are achieved by combining multiple principal elements in nearly equal ratios. However, the inclusion of multiple elements poses challenges in HEAs fabrication by PM routes due to the high cost of pure elemental powders and the absence of readily available prealloyed HEAs compositions. Employing commodity powders such as Ni625, CoCrF75, or 316L has emerged as a viable approach, reducing manufacturing expenses and facilitating HEAs development. In this study, a fixed fraction of the aforementioned powders was used to produce HEAs using metal injection moulding (MIM). The main goal is to achieve a single FCC HEA phase exhibiting exceptional mechanical properties. To this aim, the metallic powder was mixed with high-density polyethylene and paraffin wax as binder system, and the optimal powder loading was investigated. After injection, debinding and sintering stages were optimised while microstructural and mechanical assessments were conducted on the final samples.
DOI:
https://doi.org/10.59499/EP246278267
