About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
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| Symposium
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AI/ML/Data Informatics for Materials Discovery: Bridging Experiment, Theory, and Modeling
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| Presentation Title |
Multi-Scale Microstructure–Property Prediction Using Deep Learning |
| Author(s) |
Wuguo Chen, Yan Zhao, Mujun Long, Jian Wang, Bin Liang, Xiangxing Deng |
| On-Site Speaker (Planned) |
Wuguo Chen |
| Abstract Scope |
Observation scale affects microstructure-based property prediction because field of view and morphological resolution provide complementary information. We developed a multi-magnification convolutional neural network (CNN) to predict eight mechanical properties of G33 ultra-high-strength steel (UHSS) from scanning electron microscopy (SEM) images at 1000×, 2000×, and 5000×. The dataset comprised 134 heat-treatment conditions, with 15 images per condition at each magnification. Two images per condition and magnification were reserved for independent testing, and the remainder were partitioned by original image to prevent leakage. We trained three CNNs separately. For late fusion, we concatenated the means and standard deviations of their global-average-pooled features. The fusion head was trained with frozen encoders before joint fine-tuning. The best single-magnification model (2000×) achieved a condition-level normalized root-mean-square error (NRMSE) of 0.460 and mean R2 of 0.789. Fusion reduced NRMSE by 39.1% to 0.280, increased mean R2 to 0.922, and improved all eight targets without image registration. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Machine Learning, Mechanical Properties, Computational Materials Science & Engineering |