DEFORMATION BANDS IN INCONEL-718

The deformation bands formed under monotonic loading in the homogenise d and the aged Inconel 718 have been investigated using transmission e lectron microscopy. The crystallographic behaviour of the deformation bands is discussed. The orientations of the deformation bands were obs erved in tranmission electron micrographs as follows: two orientations of [112] bands and one orientation of [110] bands on the {011} plane; two orientations of [110] bands on the [001] plane, and three orienta tions of [110] bands on the {111} plane. Deformation bands were classi fied into [112] and [110] bands, the former corresponding to the proje ctions of edge traces of {111} planes, and the latter corresponding to the projections of inclined deformation {111} planes. Both twins and dislocations were observed in the deformation bands. (C) 1995 The Inst itute of Materials.