Texture Determination by Using X ray Diffraction

Abstract

The crystallographic texture is defined as the relative “organization” of the grains in an anisotropic solid which influences frequently its physics and mechanical properties. This is the case of majority of polycrystalline materials: rocks, ceramics, metals, polymers, etc.

Here the several parameters for defining the texture concept is explained and the experimental tools, as well as the mathematical procedures are shown and discussed for materials characterization.

The using of x ray beams in measuring the diffracted intensity given by a specimen under various geometrical conditions is exposed as the nowadays more useful method for texture determination in materials.

The Orientation Density Function (ODF) is defined and the calculations for the general knowledge about texture analysis in polycrystalline materials. The difference between local and global textures allows to determine the ODF more precisely and to describe the grains orientation relationships.