On the Development of Copper Textures – Neutron Diffraction Control over a Period of 12 Years –

Abstract

The longtime stability of copper textures has been periodically monitored over 12 years by neutron diffraction pole figure measurements on a cold rolled and a partially recrystallized copper specimen, always using the same diffractometer and the same procedure of data analysis. The texture component fractions of 'rolled' copper suffered a continuous decrease over about 8 years and seem to reverse since then. The decrease is accompanied by recrystallization from initial 3 to 34 vol. % at present. Texture changes in the partially recrystallized specimen are less pronounced. In this sample, the fraction of random orientations changed from initially 11 % to 31 % over the about first six years and followed by a decrease to 24 % at present.

Neutron Diffraction Measurements of Deformation and Recrystallization Textures in Cold Wire-Drawn Copper

“…In particular, the neutron diffraction has been used since long time to follow the evolution of deformation and recrystallization processes. As this technique provides good statistics due to the large volume of investigated matter, it has been largely applied to the investigations of texture evolution during recrystallization [11][12][13]. This paper presents the first part of a combined macroscopic-mesoscopic (local orientations measurements with Electron Back-Scattered Diffraction technique) study of deformation and recrystallization textures in wire-drawn copper.…”