Hans Joachim Bunge

This book reflects quite clearly the expansion of the field of "textures" as well as the rapid growth of the texture community. During the recent years, the scope of this field has been expanded to virtually all crystalline and even partly crystalline materials including intermetallic compounds, ceramics, polymers as well as multiphase composites and even fullerenes.

ICOTOM-10 : Clausthal, Germany, 20-24 September 1993

Proceedings of the 10th International Conference on Textures of Materials

Peter Morris

H. J. Bungo

Mathematical Methods

Texture Analysis in Materials Science

International Union of Crystallography

Robert L. Snyder

Jaroslav Fiala

Hans J. Bunge

Defect and Microstructure Analysis by Diffraction is focused on extracting information on the real structure of materials from their diffraction patterns. The primary features of a powder diffraction pattern are determined by the "idealized" periodic nature of the crystal structure. With theadvent of computer automation the techniques for carrying out qualitative, quantitative and structure analysis based on the primary pattern features rapidly matured. In general, the deviations of a particular specimen, from the ideal or perfect crystal structure, cause diffraction peak profiles tobroaden and sometimes to become asymmetric. Thus, information on the real structure or microstructure of a specimen can be obtained from a careful study of the diffraction line profiles. The evolving techniques for microstructure analysis from diffraction patterns such as micro-strain, crystallitesize, macro-strain and preferred orientation analysis require an ever more detailed understanding of the effects of crystallographic mistakes on peak assymmetry and the effect of the distribution of small crystallites on the tails of diffraction peaks. This book provides a comprehensive analysis ofthe fundamental theory and techniques for microstructure analysis from diffraction patterns and summarizes the current state of the art. This complete survey lays the foundation for the next and last major development in this field: the extraction of the full information in a powder pattern by thesimulation of the full experimental pattern. The goal of this branch of science is to extract all of the information locked in the powder diffraction pattern including: the types and densities of stacking faults, the strain field produced by each, the anisotropic crystallite size and orientation,along with the size and strain distributions of each phase in a specimen. This book provides a complete summary of the developments of the twentieth century and points the way.

Defect and Microstructure Analysis by Diffraction

Hans Joachim Bunge

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