A method to characterize the roughness of 2-D line features: recrystallization boundaries

Area of Science:

• Materials Science
• Surface Metrology
• Microscopy

Background:

• Quantifying surface roughness is crucial in materials science.
• Existing methods often require knowledge of the neutral plane, limiting their application.
• Nonplanar boundaries present unique challenges for roughness measurement.

Purpose of the Study:

• To present a novel method for quantifying the roughness of nonplanar boundaries.
• To provide quantitative descriptions of both local and global roughness characteristics.
• To demonstrate the estimation of rough feature sizes and local curvatures.

Main Methods:

• Development of a new mathematical approach for roughness quantification.
• Application of the method to nonplanar boundaries where the neutral plane is unknown.
• Utilizing scanning electron microscopy (SEM) for specimen characterization.

Main Results:

• The method successfully quantifies roughness for nonplanar boundaries.
• Both local and global roughness characteristics are described quantitatively.
• Accurate estimation of feature sizes and local curvatures is demonstrated.

Conclusions:

• The presented method offers a robust solution for roughness quantification of complex surfaces.
• It enhances the understanding of surface topography in materials science.
• The technique is validated through the analysis of recrystallization boundaries in pure aluminum.