在3D-EBSD中使用连贯双边界作为内部引用的对齐算法
Heng Li1,2, Shuang Xia1,2, Qin Bai1,3
1School of Materials Science and Engineering, Shanghai University, Shanghai, PR China.
Journal of microscopy
|August 16, 2024
概括
一个新的对齐算法改进了从电子反向散射衍射 (EBSD) 数据的3D微结构重建. 这种方法提高了在316L奥氏体不钢中区分双边界的准确性.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是金工业的一个方面.
- 晶体学 晶体学是指结晶学.
背景情况:
- 三维 (3D) 微结构重建对于理解材料特性至关重要.
- 连续切割与电子背散射衍射 (EBSD) 映射相结合,是3D微观结构分析的常见技术.
- 邻近的2D部分之间的翻译错位可以显著阻碍准确的3D重建.
研究的目的:
- 开发一种新的对齐算法,以提高3D微结构体积重建的精度,从序列分割EBSD数据.
- 解决和减少3D-EBSD数据集中的翻译错位问题.
- 加强在316L奥氏体不钢中连贯和不连贯的双边界之间的区别.
主要方法:
- 从通过串行切割和EBSD映射获得的2D截面重建一个3D微结构体积.
- 开发和应用新的调整算法:通过最小化指标 (LTMI) 进行线性翻译.
- 使用 {111} 平面上的连贯双边界作为对齐的参考,最大限度地减少 {111} 平面的角度差异.
主要成果:
- 该LTMI算法有效地减少了相邻部分之间的翻译错位.
- 翻译错位的系统趋势显著减少.
- 在区分连贯和不连贯的双边界之间提高了准确性.
结论:
- 与现有的3D-EBSD数据方法相比,提议的LTMI对齐程序提供了更好的错位校正.
- 该方法提高了3D微结构重建的可靠性.
- 准确识别双边界类型对于材料表征至关重要.
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