EBSDinterp 1.0: A MATLAB® Program to Perform Microstructurally Constrained Interpolation of EBSD Data

Area of Science:

• Materials Science
• Computational Materials Science
• Crystallography

Background:

• Electron Backscatter Diffraction (EBSD) is a key technique for microstructural analysis.
• Nonindexed EBSD data points present a challenge for complete microstructure reconstruction.
• Existing interpolation methods can lead to inaccuracies, such as artificial grain growth.

Purpose of the Study:

• To develop a robust method for interpolating nonindexed EBSD data points.
• To create a user-friendly graphical interface for EBSD data processing.
• To ensure accurate and artifact-free microstructural reconstructions.

Main Methods:

• A GUI-based MATLAB program, EBSDinterp, was developed.
• Interpolation is constrained by microstructural features and restricted by band contrast (BC).
• An iterative approach prioritizes high-quality data points and limits interpolation to grain interiors.

Main Results:

• EBSDinterp successfully interpolates nonindexed EBSD data points.
• The method restricts interpolation to areas of high band contrast, preventing erroneous grain growth.
• MATLAB's parallel processing toolbox ensures rapid interpolation and parameter testing.

Conclusions:

• EBSDinterp provides a reliable and efficient solution for handling incomplete EBSD datasets.
• The software produces artifact-free microstructural reconstructions by prioritizing data quality.
• The freely available software facilitates advanced EBSD data analysis.