Improved high-resolution EBSD analyses by correcting radial distortion of electron diffraction patterns

نویسندگان

چکیده

Registering experimental and simulated electron diffraction patterns is increasingly used for advanced backscatter indexation (EBSD) analysis, yet the accuracy of registration limited by several effects not accounted in pattern simulation, such as Kikuchi band (K-band) asymmetry, gray level reversal (mainly radial) optical distortion. Radial distortion parameters have previously been measured with chessboard-type standard samples. Simulated adopted to demonstrate necessity removal EBSD analyses. However there still lacks an efficient precise radial assessment correction method. Here a simple model, including barrel pincushion distortions, proposed rectify during The correlation between master permits index assess simultaneously. method applied three high-definition datasets acquired different cameras. parameter identified relative uncertainty below 4%. consideration improves patterns. Gray profiles K-bands are analyzed verify correctness image registration. current provides fast, economic

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ژورنال

عنوان ژورنال: Materials Characterization

سال: 2022

ISSN: ['1044-5803', '1873-4189']

DOI: https://doi.org/10.1016/j.matchar.2022.112458