Grain Size in Medium-Carbon Steel
One medium-carbon steel image is submitted for analysis. The absence of clear grain boundaries of the pearlitic-ferritic microsctructure with both dark and light phases make traditional thresholding difficult. A machine-learning algorithm specially developed for pearlitic steel allows a reliable one-step detection.
Figure 1. Image of pearlitic stainless steel at 100X.
Figure 2. Grain boundary is detected using the Ferrite-pearlite algorithm prior to measurement.