Abstract
Bulk metallic glass has been a fascinating class of metallic systems with remarkable corrosion resistance, elastic modulus, and wear resistance, while evaluating the glass forming ability has been a very interesting aspect for decades. Machine learning techniques, viz., artificial neural networks and KNearest Regressor-based models have been developed in this work to predict the glass forming ability, given the composition of the bulk metallic glassy alloy. A new criterion of classification of atoms present in a bulk metallic glass is proposed. Feature importance analysis confirmed that the accuracy of the prediction depends mainly on change in enthalpy of mixing and change in entropy of mixing. However, among the artificial neural network models and KNearest Regressor models developed, the former showed a promising performance in prediction of the glass formation ability (critical thickness). It has been successfully demonstrated and validated with experimental critical thickness that the glass forming ability can be predicted using an artificial neural network given the elemental composition alone. A computational algorithm was also developed to classify the atoms as big/small in each given alloy. The outcome of this algorithm is used as input parameters to the ANN and other machine learning models used in this work.
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Data Availability
The processed data required to reproduce these findings are available to download from https://github.com/manju838/Atomic-Classification.git. An un-published preliminary version of this work (before modifications) was posted in https://www.researchsquare.com/article/rs-145304/v1 (available since January 15, 2021). Following link is for a computer program which takes BMG alloy composition as input, processes it and gives GFA (i.e., Dmax) for both the prediction models discussed in this work https://github.com/manju838/GFA-Prediction-of-BMGs.git
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Reddy, G.J., Kandavalli, M., Saboo, T. et al. Prediction of Glass Forming Ability of Bulk Metallic Glasses Using Machine Learning. Integr Mater Manuf Innov 10, 610–626 (2021). https://doi.org/10.1007/s40192-021-00239-y
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DOI: https://doi.org/10.1007/s40192-021-00239-y