The microstructure of this C36 Laves phase, in a 2-phase Ni-15at%Mg alloy, was studied by means of electron microscopy. Both intrinsic and extrinsic stacking faults were found on the basal plane. The displacement vectors of the faults, and the Burgers vectors of partial dislocations which lay on the basal faults or bounded each side of the faults, were analyzed by means of high-resolution transmission electron microscopy. Non-basal faults were found on the {10•1} and {10•2} pyramidal planes and the {10•0} prismatic plane; all connected to basal faults. The displacement vector of the pyramidal faults was found to be 1/12<40•3>. The microstructure was studied after room-temperature compression, and non-basal slip was found be the main deformation mode.

Y.Liu, J.D.Livingston, S.M.Allen: Metallurgical and Materials Transactions A, 1995, 26[6], 1441-7