Determination of a Mean Orientation in Electron Backscatter Diffraction Measurements

作者: Jae-Hyung Cho , A. D. Rollett , K. H. Oh

DOI: 10.1007/S11661-005-0016-4

关键词:

摘要: The average orientation of an electron backscatter diffraction (EBSD) map is calculated by the quaternion method and compared with nonlinear solving Hill Climbing Barton-Dawson methods. An automated EBSD system acquires orientations on a regular grid pixels based indexation Kikuchi patterns described one crystal symmetry-related equivalents. In order to calculate average, it necessary make cloud for set in grain. A consists representative small misorientation between each every pair points. position criterion says that two adjacent have smaller than all others. With this, proper equivalent orientation, or cloud, can be selected from among summation divided its norm. instant cumulative useful dealing polycrystalline grains discontinuity also selection large scattering. quaternion, Climbing, methods are tested Gaussian distribution around ideal texture component, Brass {110}〈112〉. accuracy three results similar but associated longer computation times method. adapted characterization partially-recrystallized interstitial-free (IF) steel randomly distributed Brass, S, cube components according several different spreads.

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