mechanical properties

energy deposition ded

laser melting slm

wire arc

gamma prime

high entropy

powder bed fusion

Materials Science and Engineering: A

The creep properties of a polycrystalline nickel-based superalloy produced via selective laser melting were investigated in this study. All heat treatment conditions of the additively manufactured material show superior creep strength compared to conventional cast and wrought material. The process leads to a microstructure with fine subgrains. In comparison to conventional wrought material no Niobium rich δ phase is necessary to control the grain size and thus more Niobium is available for precipitation hardening and solid solution strengthening resulting in improved creep strength.

Superior creep strength of a nickel-based superalloy produced by selective laser melting