Producing Ni-base superalloys single crystal by selective electron beam melting

Edouard Chauvet (1) , Catherine Tassin (1) , Jean-Jacques Blandin (1) , Rémy Dendievel (1) , Guilhem Martin (1)

1 SIMaP - Science et Ingénierie des Matériaux et Procédés

The possibility to produce Ni-base superalloy single crystals by selective electron beam melting (S-EBM) is demonstrated. The production of single crystals specimens was achieved by a tight control of the processing conditions without requiring a grain selector or a crystal seed. The melting parameters are controlled so as to promote columnar grains and intensify the competitive grain growth.

Mots clés: Ni-base superalloys; Electron Beam Melting; Single Crystal; Crack-free; Grain selection

Domaines: Matériaux

Edouard Chauvet, Catherine Tassin, Jean-Jacques Blandin, Rémy Dendievel, Guilhem Martin. Producing Ni-base superalloys single crystal by selective electron beam melting. Scripta Materialia, 2018, 152, pp.15-19. ⟨10.1016/j.scriptamat.2018.03.041⟩. ⟨hal-01957169⟩