On the Orientation Changes during Plastic Deformation of Individual Crystallites in Polycrystalline Aggregates

Abstract

The orientation changes of individual crystallites in aluminium wires were studied during 1% plastic deformation. The crystals near the [llll-ideal orientation rotated towards this orientation according to the Taylor theory. The crystals of the weak [loo]-texture component showed no resulting rotation component towards [loo]

Modeling the deformation textures and microstructural evolutions of a Fe–Mn–C TWIP steel during tensile and shear testing

“…where the tensor of viscoplastic compliances m is written The grain rotations due to slip are given by the evolution of the Euler angles as defined by Bunge and Fuchs [33].…”

Lattice rotation induced by plasma nitriding in a 316L polycrystalline stainless steel

“…To some extent, the large expansion of the native austenite (up to 9%) can be roughly described as a large deformation, despite the composition and lattice constant being modified. However, the lack of suitable experimental data on the dynamic of rotation of individual grains within or near the surface has not allowed the precise analysis of the rotation mechanism to date [19]. Recently, the use of three-dimensional X-ray diffraction has allowed characterization of the plastic deformation of individual grains into bulk polycrystalline aluminium [20,21].…”

Applications

“…Bunge and Fuchs [23] investigated the rotations of an ensemble of surface and bulk grains in an aluminum wire after about 1% elongation by an x-ray oscillating-film method. Previous studies of the rotation of individual grains are rare.…”