Directed Energy Deposition of Multi-Principal Element Alloys

As efforts associated with the exploration of multi-principal element alloys (MPEAs) using computational and data-intensive methods continue to rise, experimental realization validation predicted material properties require high-throughput combinatorial synthesis these alloys. While additive manufacturing (AM) has emerged as leading pathway address challenges for rapid prototyping through part fabrication, extensive research on developing understanding process-structure-property correlations is imminent. In particular, directed energy deposition (DED) based AM MPEAs holds great promise because boundless compositional variations possible functionally graded component well surface cladding. We analyze recent in DED MPEAs, microstructural evolution during laser metal various transition refractory elements, assess effects processing parameters phase properties. Our suggest that development robust predictive approaches process parameter selection modifying mechanisms are essential enable platforms repeatedly produce defect free, stable designer MPEAs.