Optimisation of selective laser melting parameters for the Ni-based superalloy IN-738 LC using Doehlert’s design

Nataliya Perevoshchikova (1) , Jordan Rigaud (2) , Yu Sha (1) , Martin Heilmaier (3) , Barrie Finnin (1) , Elena Labelle (1) , Xinhua Wu (1)

1 Monash University [Melbourne]
2 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux
3 KIT - Karlsruhe Institute of Technology

The Ni-based superalloy IN-738 LC is known to be susceptible to porosity and different types of cracking during the build-up process and, thus, challenging to manufacture using selective laser melting (SLM). Determining a feasible set of operating parameters for SLM of nickel-based superalloys involves new approach to experimental design based on the Doehlert method that assists in determining an optimal (feasible) set of operating parameters for SLM of IN-738 LC powder alloy.

Mots clés: Additive manufacturing; Experimental design; Selective laser melting; NI-based superalloys; Powder metallurgy

Domaines: Matériaux; Matériaux

Nataliya Perevoshchikova, Jordan Rigaud, Yu Sha, Martin Heilmaier, Barrie Finnin, et al.. Optimisation of selective laser melting parameters for the Ni-based superalloy IN-738 LC using Doehlert’s design. Rapid Prototyping Journal, 2017, 23 (5), pp.881-892. ⟨10.1108/RPJ-04-2016-0063⟩. ⟨hal-02393165⟩