Plastic Strain Measurement by EBSD

概要

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This study aims at showing a measurement procedure for quantitative assessment of the global and local plastic strains using electron backscatter diffraction (EBSD). In an experiment, duplicate crystal orientation measurements were made for the same area under different measurement conditions using a deformed stainless steel specimen. Then, distribution of the local misorientation was investigated. Although the global plastic strain could be quantified by using the parameter <I>MCD</I>, the local misorientation for assessing the local plastic strain depended on the measurement conditions. It was shown that, by applying a smoothing filter, dependency of the local misorientation on the measurement conditions could be made negligibly small. It was concluded that the smooth filtering was a practical technique for quantitative assessment of local misorientation.