Non-equilibrium intermixing and phase transformation in severely deformed Al/Ni multilayers

Xavier Sauvage (1) , G. P. Dinda (2) , Gerhard Wilde (2, 3)

1 GPM - Groupe de physique des matériaux
2 INT - Institute of Nanotechnology [Karlsruhe]
3 IMP - Instutue of material physics

Al/Ni multilayers have been prepared by repeated folding and cold rolling (F&R) of elemental foils. The thickness of Al and Ni foils is reduced down to less than 50 nm after fifty F&R cycles. Three-dimensional atom probe analyses clearly reveal the presence of supersaturated solid solutions and give the evidence of deformation-induced intermixing. The formation of the solid solutions and their transformation into the Al3Ni phase upon annealing is discussed.

Mots clés: rolling; multilayers; nickel aluminides; three-dimensional atom probe; nanocrystalline

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Xavier Sauvage, G. P. Dinda, Gerhard Wilde. Non-equilibrium intermixing and phase transformation in severely deformed Al/Ni multilayers. Scripta Materialia, 2007, 56, pp.181-184. ⟨10.1016/j.scriptamat.2006.10.021⟩. ⟨hal-00114303⟩