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Full Description
Crystallographic texture or preferred orientation has long been known to strongly influence material properties. Historically, the means of obtaining such texture data has been though the use of x-ray or neutron diffraction for bulk texture measurements, or transmission electron microscopy (TEM) or electron channeling for local crystallographic information. In recent years, we have seen the emergence of a new characterization technique for probing the microtexture of materials. This advance has come about primarily through the automated indexing of electron backscatter diffraction (EBSD) patterns. The first commercially available system was introduced in 1994, and since then the growth of sales worldwide has been dramatic. This has accompanied widening applicability in materials science problems such as microtexture, phase identification, grain boundary character distribution, deformation microstructures, etc. and is evidence that this technique can, in some cases, replace more time-consuming TEM or X-ray diffraction investigations. The purpose of this book is to provide the fundamental basis for EBSD.
The formation and interpretation of EBSD patterns and the gnomonic projection are described as the framework for materials characterization using EBSD. Traditional representation of texture in orientation space is discussed in terms of stereographic projections, pole figures, inverse pole figures, and orientation distribution functions before introducing the Rodrigues-Frank representation of crystallographic texture. The fundamentals of automated EBSD and the accuracy of EBSD measurements are then discussed. Current hardware and software as well as future prospects for analyzing EBSD data sets are reviewed. A brief mention of the criterion required for the purchase of an EBSD system is included as an aid to this relatively new area of materials characterization. The section concludes with chapters from three manufacturers of EBSD equipment that highlight recent advances in capabilities. The book concludes with a review of recent applications of the technique to solve difficult problems in materials science as well as demonstrates the usefulness of coupling EBSD with other approaches such as numerical analysis, plasticity modeling, and TEM.
Attention is paid to the measurement and mapping of strain using EBSD as well as the characterization of deformed microstructures, continuous recrystallization, analysis of facets, ceramics, and superconducting materials.
Contents
List of Contributors. 1. The Development of Automated Diffraction in Scanning and Transmission Electron Microscopy; D.J. Dingley. 2. Theoretical Framework for Electron Backscatter Diffraction; V. Randle. 3. Representation of Texture in Orientation Space; K. Rajan. 4. Rodriques-Frank Representations of Crystallographic Texture; K. Rajan. 5. Fundamentals of Automated EBSD; S.I. Wright. 6. Studies on the Accuracy of Electron Backscatter Diffraction Measurements; M.C. Demirel, B.S. El-Dasher, B.L. Adams, A.D. Rollett. 7. Phase Identification Using Electron Backscatter Diffraction in the Scanning Electron Microscope; J.R. Michael. 8. Three-Dimensional Orientation Imaging; D.J. Jensen. 9. Automated Electron Backscatter Diffraction: Present State and Prospects; R.A. Schwarzer. 10. EBSD: Buying a Systems; A. Eades. 11. Hardware and Software Optimization for Orientation Mapping and Phase Identification; P.P. Camus. 12. An Automated EBSD Acquisition and Processing System; P. Rolland, K.G. Dicks. 13. Advanced Software Capabilities for Automated EBSD; S.I. Wright, D.P. Field, D.J. Dingley. 14. Strategies for Analysis of EBSD Datasets; W.E. King, J.S. Stolken, M. Kumar, A.J. Schwartz. 15. Structure-Property Relations: EBSD-Based Materials-Sensitive Design; B.L. Adams, B.L. Henrie, L.L. Howell, R.J. Balling. 16. Use of EBSD Data in Mesoscale Numerical Analyses; R. Becker, H. Weiland. 17. Characterization of Deformed Microstructures; D.P. Field, H. Weiland. 18. Anisotropic Plasticity Modeling Incorporating EBSD Characterization of Tantalum and Zirconium; J.F. Bingert, G.C. Kaschner, T.A. Mason, P.J. Maudlin, G.T. Gray III. 19. Measuring Strains Using Electron Backscatter Diffraction; A.J. Wilkinson. 20. Mapping Residual Plastic Strain in Materials Using Electron Backscatter Diffraction; E.M. Lehockey, Yang-Pi Lin, O.E. Lepik. 21.EBSD Contra TEM Characterization of a Deformed Aluminum Single Crystal; Xiaoxu Huang, D.J. Jensen. 22. Continuous Recrystallization and Grain Boundaries in a Superplastic Aluminum Alloy; T.R. McNelley. 23. Analysis of Facets and Other Surfaces Using Electron Backscatter Diffraction; V. Randle. 24. EBSD of Ceramic Materials; J.K. Farrer, J.R. Michael, C.B. Carter. 25. Grain Boundary Character Based Design of Polycrystalline High Temperature Superconducting Wires; A. Goyal. Index.
