Percent Area of Phase

1. Overview

The percent area (%) of different phases, which appear with varying brightness or colors in metallographic images, is measured.

For example, the area ratio (%) of up to three phases such as porosity, carbide, and cementite can be obtained. 

The use of local and adaptive threshold functions ensures accurate separation of each phase and provides statistically reliable estimates.

2. Image Capture

Place the polished specimen on the stage and capture five microstructural images using the prepared camera.

At this time, ensure that the captured images do not overlap with each other.

3. Image Loading

When the captured images are loaded, they appear in the gallery window on the right.

By selecting the first image with the mouse, it will be displayed in the workspace, ready for measurement.

(If unrelated images are already open in the gallery before loading the target images for this analysis, they should be closed using the Close All button.)

4. Phase Detection and Measurement

If the phases are clearly distinguishable in the image, select Grey Scale in the Color Space option and define the range.

By checking Test, you can verify that the specified color is correctly overlaid on the phase.

For more precise detection, adjust the start and end values of the range to complete the detection process, and then click the Measure button.

5. Display of Measurement Results

Each time a prepared image is measured, the measurement number is displayed as Field#, and the results are shown together with the automatically calculated average.

6. Result Output

When the last field (image) has been reached and the measurement is completed, click the Export to Excel button to generate the test report.