| Abstract Scope |
In cold spray additive manufacturing (CSAM) three dimensional components are produced by spraying powder materials onto a substrate at supersonic speeds which causes the material to deform and create bonds on impact. CSAM has many benefits including high deposition rates, large build volumes, and solid-state processing. Due to many refractory high entropy alloys (RHEA) having high strength and low ductility producing these alloys in complex geometries can be challenging. In order to enable complex geometries of these alloys this work investigates the use of elemental blends of RHEAs with CSAM to produce green compacts which are subsequently sintered in order to homogenize and densify the alloy. By using elemental blends, CSAM can take advantage of the higher sprayability of the base elements (e.g., Al, Cr, Nb, Ti) in order to spray non-sprayable elements (e.g., Mo, W) and ultimately produce a refractory high entropy alloy. |