Abstract Scope |
Refractory metals based HEAs exhibit a relatively high melting point, as well as high strength. These circumstances promote the production of parts via additive manufacturing. This paper introduces two production routes that lead to spherical refractory metals HEA powders, mainly depending on the melting point of the alloy. First route: Elements are alloyed in an Electron Beam Furnace. The resulting ingot is remolten in an induction skull melter, poured to cylindrical rods and then EIGA atomized. Furnace specifications are introduced, features presented and examples for alloys, suitable for this production route are given. Second route involves mixing the element powders metallurgically, powders are compacted into cylindrical containers, which are HIPed and consequently atomized through an EIGA-process. This production route is suitable for alloys with very high melting points. Examples for process parameters and alloys are given. Resulting powders are characterized and results are being presented. |