Tutorial: Crystal orientations and EBSD - Or which way is up?

被引:131
作者
Britton, T. B. [1 ]
Jiang, J. [1 ]
Guo, Y. [2 ,5 ]
Vilalta-Clemente, A. [2 ]
Wallis, D. [3 ]
Hansen, L. N. [3 ]
Winkelmann, A. [4 ]
Wilkinson, A. J. [2 ]
机构
[1] Univ London Imperial Coll Sci Technol & Med, Dept Mat, Prince Consort Rd, London SW7 2AZ, England
[2] Univ Oxford, Dept Mat, Parks Rd, Oxford OX1 3PH, England
[3] Univ Oxford, Dept Earth Sci, S Parks Rd, Oxford OX1 3AN, England
[4] Bruker Nano GmbH, Studio 2D, D-12489 Berlin, Germany
[5] EMPA Swiss Fed Labs Mat Testing & Res, Lab Mech Mat & Nanostruct, Feuerwerkerstr 39, CH-3602 Thun, Switzerland
基金
英国工程与自然科学研究理事会;
关键词
Electron backscatter diffraction; Crystal orientation; Texture; Electron microscopy; ELECTRON BACKSCATTER DIFFRACTION; TRANSMISSION-EBSD; MICROSTRUCTURES; SPECIFICATION; RECOGNITION; STRAINS; CRACK; GRAIN;
D O I
10.1016/j.matchar.2016.04.008
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Electron backscatter diffraction (EBSD) is an automated technique that can measure the orientation of crystals in a sample very rapidly. There are many sophisticated software packages that present measured data. Unfortunately, due to crystal symmetry and differences in the set-up of microscope and EBSD software, there may be accuracy issues when linking the crystal orientation to a particular microstructural feature. In this paper we outline a series of conventions used to describe crystal orientations and coordinate systems. These conventions have been used to successfully demonstrate that a consistent frame of reference is used in the sample, unit cell, pole figure and diffraction pattern frames of reference. We establish a coordinate system rooted in measurement of the diffraction pattern and subsequently link this to all other coordinate systems. A fundamental outcome of this analysis is to note that the beamshift coordinate system needs to be precisely defined for consistent 3D microstructure analysis. This is supported through a series of case studies examining particular features of the microscope settings and/or unambiguous crystallographic features. These case studies can be generated easily in most laboratories and represent an opportunity to demonstrate confidence in use of recorded orientation data. Finally, we include a simple software tool, written in both MATLAB and Python, which the reader can use to compare consistency with their own microscope set-up and which may act as a springboard for further offline analysis. (C) 2016 The Authors. Published by Elsevier Inc.
引用
收藏
页码:113 / 126
页数:14
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