Authors:
Alexander Mejía-Reinoso (Universidad Carlos III de Madrid, Spain),
Soon-Jik Hong (Kongju National University, Korea, Republic of),
JOSE MANUEL TORRALBA (Universidad Carlos III de Madrid, Spain),
Monica CAMPOS (Universidad Carlos III de Madrid, Spain)
Abstract:
The microstructure of materials used in high-temperature components such as power generation, aerospace, chemical, and process plant applications must be stable at the service conditions to avoid any losses in the performance. The reduction of density and the increase of the thermal stability range of the microstructure are also two critical improvements to consider in the development of new dual Co-based superalloys. This work explored three viable choices for achieving dual ?|?’ microstructures: the Co-Al-Mo, the Co-Ni-Al-Ta-Ti-V, and the Co-Ti-V. Since the microstructural characteristics of Co-reinforced by ?’ superalloys are critical for the envisioned next-generation superalloys, the morphology and coarsening behaviour of the ?’ precipitates in each alloy during the sintering process have been investigated. The volume fraction of ?’ and whether there is a difference in the coarsening rate of the ?’ precipitates are also key factors in the behaviour of these alloys at high temperatures, has been promoted.
DOI:
https://doi.org/10.59499/WP225371699