Wide-area measurement of crystal structure and crystal orientation - Wide-area measurement using EBSD.
It is now possible to conduct EBSD analysis over a wide area of several millimeters, which was previously impossible.
The EBSD method for evaluating crystal structures and orientations has traditionally faced the challenge of measuring small areas, making it unsuitable for measuring wide regions spanning several millimeters. However, our company has established a low-magnification measurement technique, enabling wide-area EBSD analysis of materials with large crystal grains on the sub-millimeter order, which were previously difficult to evaluate. Using this measurement technique, we conducted wide-area EBSD analysis of metal welds and soft magnetic materials (permalloy), assessing crystal orientations and strains.
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basic information
◆Development Overview One of the methods for evaluating crystal structures and orientations is the EBSD method, but in the conventional measurement mode, the measurement area was limited to about 1mm square at most. In contrast, by establishing a measurement technique in the LDF mode that allows for measurements even at low magnification, it has become possible to measure areas up to 3mm×9mm, enabling EBSD analysis of materials with large crystal grains on the sub-millimeter order, which were difficult to evaluate conventionally. ◆Main Information Obtained from EBSD Analysis - Crystal orientation (IPF map, pole figure, Schmid Factor map) - Strain (KAM map, GROD map, GAM map, GOS map) - Grain size - Crystal phase (Phase map) ◆Main Measurement Application Targets - Materials with large grains (permalloy, electrical steel sheets, etc.) - Welds including weld beads, heat-affected zones, and base materials over a wide area
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P3
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Applications/Examples of results
◆Main Measurement Examples ・Materials with large crystal grains (Permalloy, electrical steel sheets, etc.) ・Welds including weld beads, heat-affected zones, and base materials over a wide area
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Company information
Daitō Analysis Research has been advancing the establishment of an advanced think tank based on highly reliable analysis and analytical techniques accumulated in various material fields, as well as the challenges received from a wide range of industry customers. We aim to solve our customers' various issues with the least cost and the shortest delivery time. Moving forward, we would like to support our customers' research and development using the latest equipment and advanced manpower, and assist in creating products that enrich the future.