About this Abstract |
Meeting |
TMS Specialty Congress 2024
|
Symposium
|
2nd World Congress on Artificial Intelligence in Materials & Manufacturing (AIM 2024)
|
Presentation Title |
Reproducible Quantification of the Microstructure of Complex Quenched and Quenched and Tempered Steels Using Modern Methods of Machine Learning |
Author(s) |
Björn Bachmann, Martin Müller, Dominik Britz, Marie Stiefel, Frank Mücklich |
On-Site Speaker (Planned) |
Björn Bachmann |
Abstract Scope |
This study aims to address the limitations of conventional methods for assessing microstructures by using machine learning techniques. By using representative data and objective ground truth, ML models can achieve reproducible and automated microstructure evaluations. However, creating a definitive ground truth can be challenging in complex use cases. The study uses microstructures of highly complex Q/QT steels as a showcase, using patch-wise classification and a sliding window technique to segment entire microphotographs. The researchers used correlative microscopy, including micrographs from light optical microscopes (LOM) and scanning electron microscopes (SEM), and data from electron backscatter diffraction (EBSD) to train accurate machine learning models for classifying LOM or SEM images. Despite the complexity of the steels processed, the automated ML approaches achieved classification accuracies of 88.8% for LOM images and 93.7% for high-resolution SEM images, demonstrating close-to-superhuman performance compared to traditional subjective evaluations by experts. |
Proceedings Inclusion? |
Definite: Other |