Structural Studies on the Evolution of Texture in Heavily Wire Drawn and Subsequently Annealed Pure Al Metal

Abstract

Conventional transmission electron microscopy and x-ray diffraction techniques have been applied to study the microstructure of heavily wire-drawn and annealed samples of pure Al metal. Samples wire drawn (60% of the original value) have been found to be comprised of columnar grains with heavily distorted crystal structure and to exhibit a strong <111> texture. Thus drawn samples after annealing appear free of columnar granular structure and show re-crystallized grains. Electron diffraction studies from thus re-crystallized grains are presented to evaluate the resulting annealing texture.