Influence of the dislocation density on hardening precipitation in Inconel© 625

Anthony Seret (1) , Charbel Moussa (1) , Marc Bernacki (1) , Jonathan Cormier (2) , Nathalie Bozzolo (1)

1 CEMEF - Centre de Mise en Forme des Matériaux
2 PPRIME - Institut Pprime

Inconel© 625 is a Nickel-base superalloy used in aerospace industry as turbine shrouds, spray bars, hydraulic tubing, armoring and thrust reversers systems [1]. One reason of its use is its high mechanical properties at high temperature. Inconel© 625 is strengthened by precipitation of γ″ phase, tetragonal Ni 3 Nb [1]. Since dislocations can influence precipitation [2], the precipitation of γ″ in Inconel© 625 was studied in samples submitted to cold straining to induce different dislocation contents before precipitation heat treatment.

Mots clés: Dislocation; Inconel 625

Domaines: Sciences de l'ingénieur [physics]; Matériaux

Anthony Seret, Charbel Moussa, Marc Bernacki, Jonathan Cormier, Nathalie Bozzolo. Influence of the dislocation density on hardening precipitation in Inconel© 625. Journées annuelles SF2M, SF2M (Société Française de Métallurgie et des Matériaux), Oct 2017, Lyon, France. ⟨hal-01624670⟩