The interplanar spacing d(hkZ) versus sin 2 distributions were measured for the 211,310, 220 and 200 reflections from severely colddrawn O. 7% C steel wire with a diameter of 0.25 ram. From the shape of the curves it was concluded that, as well as a (110) fibre texture and elastic anisotropy, plastic anisotropy of the ferrite crystals may be an important cause of the non-linearity in d{hkl) versus sin 2 ~. The shape of the curves, and therefore the residual state of stress of the wire, is influenced by the drawing parameters, i.e. the drawing die cone angle and the number of stages.
AbUm&-The role of specific grain boundaries in the nucleation of recrystailization textures is demonstrated by experiments on copper bicrystals. It is deduced that the major part of the recrystallized grains that have nucleated at the grain boundary can be traced back to having nucleated in { 100)(001), {ZlO}(OOl) or {210}(120) orientations. These orientations do not exist in the bicrystals after deformation but can easily be accounted for by the (112)-slip nucleation mechanism proposed by Verbraak. X-ray strain measurements support this conclusion. Finally, on the basis of the observation of near-CSL misorientation relationships between deformed matrix and recrystallized grains, a suggestion is made for a more general nucleation mechanism. R&s&-Grace I des exp&iences sur des bicristaux de cuivre, nous demontrons le role de joints de grains particuliers sur la germination des textures de recristallisation. On conclut que la plupart des grains recristallis& ayant germ6 sur le joint de grains avaient germ6 selon les orientations ~lOO)(OOl), {210)(001) ou {210}(120). Ces orientations n'existent pas dans les bicristaux apms deformation. mais on peut en rendre compte par le mecanisme de germination par glissement (112) propost par Verbraak. Des mesures de d~fo~ation par rayons X confhment cette conclusion. Finalement. t partir de l'obsetvation de relations de d&orientations proches du r&au de sites de cohtcidence entre la matrice deform&e et les grains recristallis& nous proposons un mecanisme de germination plus general. B-Die Rolle spedfischer Komgrenzen bei der Keimbildung in Rekristallisationstexturen wird geaeigt mittels Versuche an Kupferbikristalle. Es wird deduziert dass, der grosste Teil der rekristallisierten Kiimer, deren Keimbildung an der Komgrenze stattfand, zuriick gefilhrt werden kann auf Keimbildung in {lOOf(OOl). {210f(OOl) und~210~(120) O~entie~ngen. Diese Orientierungen sind nicht in den deforest Bik~stallen anwesend aber sie kiinnen leicht erkliirt werden mit Hilfe des Keimbildungsmechanismus mittels (112>-Gleitung, vorgeschlagen von Verbraak. Rontgenspannungsmessungen unterstiitzen diese Konklusion. Schliesslich, basiert auf das Vorhandensein der Koinxidenzgitter-Fehlorientierungsbeziehungen zwischen deformiertem Material und rekristalhsierten Khmer. wird einen allgemeineren Keimbildungsmechanismus vorgeschlagen.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.