通过模式中心定标和晶界细化优化EBSD标引。

IF 1.9 4区 工程技术 Q3 MICROSCOPY
Yiling Huang, Fan Peng, Xuemei Song, Xingyu Jin, Yuqing Jiang, Wei Zheng, Caifen Jiang, Zhaoqi Wu, Yi Zeng
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引用次数: 0

摘要

为了提高传统电子背散射衍射(EBSD)的标引率,本研究利用EBSD对立方相材料的标引数据进行了采集和分析。利用霍夫变换对菊池带进行识别,并通过遗传算法对模式中心进行优化。设计了四个目标函数来考察不同种群大小对算法收敛性的影响。结果表明,当种群规模达到400时,计算趋于稳定,HMAE (H-mean angle error)目标函数通过整合匹配的菊池带数和平均角误差(MAE)进行筛选,表现出较好的性能。此外,针对Kikuchi模式在籽界重叠导致的索引误差,提出了一种基于模式相似度匹配的索引优化方法,显著提高了EBSD制图数据的索引率。最后,采用邻域搜索策略进一步细化索引过程,在保证索引精度的同时大幅减少了计算时间。该研究为提高EBSD制图数据采集和分析的效率和精度提供了新的方法和见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Optimisation of EBSD indexing through pattern centre calibration and grain boundary refinement

Optimisation of EBSD indexing through pattern centre calibration and grain boundary refinement

To enhance the indexing rate of conventional electron backscatter diffraction (EBSD), this study employed EBSD to collect and analyse the mapping data of cubic phase materials. Kikuchi bands were identified using Hough transform, and the pattern centre was optimised through a genetic algorithm. Four objective functions were designed to investigate the influence of varying population sizes on the convergence of the algorithm. The results revealed that the calculation stabilised when the population size reached 400, with the HMAE (H-mean angular error) objective function exhibiting superior performance in screening by integrating the number of matched Kikuchi bands and mean angular error (MAE). Furthermore, to address indexing errors resulting from overlapping Kikuchi patterns at grain boundaries, an indexing optimisation method based on pattern similarity matching was proposed, significantly improving the indexing rate of EBSD mapping data. Finally, neighbourhood search strategy was implemented to further refine the indexing process, ensuring high indexing accuracy while substantially reducing computational time. This study offers novel methodologies and insights for improving the efficiency and precision of EBSD mapping data acquisition and analysis.

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来源期刊
Journal of microscopy
Journal of microscopy 工程技术-显微镜技术
CiteScore
4.30
自引率
5.00%
发文量
83
审稿时长
1 months
期刊介绍: The Journal of Microscopy is the oldest journal dedicated to the science of microscopy and the only peer-reviewed publication of the Royal Microscopical Society. It publishes papers that report on the very latest developments in microscopy such as advances in microscopy techniques or novel areas of application. The Journal does not seek to publish routine applications of microscopy or specimen preparation even though the submission may otherwise have a high scientific merit. The scope covers research in the physical and biological sciences and covers imaging methods using light, electrons, X-rays and other radiations as well as atomic force and near field techniques. Interdisciplinary research is welcome. Papers pertaining to microscopy are also welcomed on optical theory, spectroscopy, novel specimen preparation and manipulation methods and image recording, processing and analysis including dynamic analysis of living specimens. Publication types include full papers, hot topic fast tracked communications and review articles. Authors considering submitting a review article should contact the editorial office first.
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