CiNii 図書 - Microtexture determination and its applications

The characterisation of microstructure is a cornerstone in the study of both natural and technological materials. In the widest sense this topic encompasses for all phases present: morphology, including size and shape distributions; chemical composition; and crystallographic parameters, including orientation and orientation relationships. A landmark advance for the materials community occurred with the genesis of 'microtexture', which for the first time provided integration of crystallographic parameters and other aspects of the microstructure. Microtexture can be defined as 'a population of crystallographic orientations whose individual components are linked to their location within the microstructure'. <CR><CR> The term microtexture can also be applied to any experimental technique used to determine this information. Essentially, atomic planes in the sampled volume of specimen diffract a stationary beam of electrons. Analysis of the resulting diffraction pattern provides crystallographic information which can be related back to its position of origin. An estimated 95% of microtexture determination is by electron backscatter diffraction (EBSD) in a scanning electron microscope (SEM), with the remaining 5% contributed mainly by transmission electron microscopy (TEM) counterparts to EBSD. Evaluation determination is by electron backscatter diffraction (EBSD) in a scanning electron microscope (SEM), with the remaining 5% contributed mainly by transmission electron microscopy (TEM) counterparts to EBSD. Evaluation (indexing) of EBSD diffraction patterns and output of data in a variety of formats is in most cases fully automated. The most exciting EBSD output is an 'orientation map', which is a quantitative depiction of the microstructure in terms of its orientation constituents. <CR><CR> Microtexture determination is now firmly established as the most comprehensive experimental tool for quantitative characterisation and analysis of microstructure, and is used extensively in both research and industry. Much has changed since this book was first published and the second edition has been completely rewritten to reflect these developments.

The technology of microtexture
Theoretical aspects of orientation determination
Preparation for an EBSD investigation
Data collection
Data processing: Theoretical aspects and statistical distributions
Data processing: Practical aspects
Applications, reporting and outlook.

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Microtexture determination and its applications

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