On the advanced microstructural characterisation of additively manufactured alumina-zirconia based eutectic ceramics: Overview and outlook

Abstract

Recently, there have been a number of reports on the fabrication of Alumina-Zirconia (Al2O3-ZrO2 (AZ))-based eutectic ceramics using laser additive manufacturing (AM) techniques owing to the exceptional creep and oxidation resistance coupled with excellent microstructural stability in these materials. Moreover, a number of interesting microstructural features (in these materials) have been reported to be formed by the variation of process parameters (especially, laser scanning speed) associated with the aforementioned AM techniques. The present review provides an overview of the present state of research in the area of laser AM AZ-based eutectic ceramics and highlights the challenges and future outlooks in this avenue of research. In addition, the requirement of employing correlative microstructural characterisation in these materials has been highlighted in the outlooks section.

3 Additive manufacturing of compositionally complex alloys: trends, challenges, and future perspectives

“…Hence, there is a very limited information on the heating and cooling processes at different regions of the melt pool during AM-based fabrication techniques [34]. Moreover, owing to the non-equilibrium nature of AM-based fabrication techniques, a number of process and material parameters influence the fabrication process [5], [6], [33], [61], [62]. Understanding these parameters experimentally, is a highly challenging.…”

Additive Manufacturing of High Entropy Alloys: Trends, Challenges and Future Perspectives

“…Hence, there is a very limited information on the heating and cooling processes at different regions of the melt pool during AM-based fabrication techniques [34]. Moreover, owing to the non-equilibrium nature of AM-based fabrication techniques, a number of process and material parameters influence the fabrication process [5], [6], [33], [61], [62]. Understanding these parameters experimentally, is a highly challenging.…”