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機器學習在金屬材料服役性能預測中的應用

Application of machine learning for predicting the service performance of metallic materials

  • 摘要: 在材料基因工程的背景下,數據驅動的機器學習技術推動著材料研究進入了新的范式. 機器學習能夠充分利用已有的實驗數據,在不明晰機制原理的情況下實現對材料服役性能的準確預測,極大地減少了實驗所需的時間與成本. 本文以機器學習預測金屬材料的典型服役性能為主題,總結并分析了四種預測金屬材料服役性能的常用機器學習模型. 以疲勞、蠕變、腐蝕這三種常見的服役性能為代表,介紹了機器學習在這三個性能方面的研究情況,并列舉了幾個具體的案例進行簡要分析. 最后,總結了機器學習預測金屬材料服役性能的特點,分析了當下機器學習預測金屬材料服役性能存在的一些科學問題,并對其發展前景進行了討論和展望.

     

    Abstract: In materials genetic engineering, data-driven machine learning (ML) technology is driving materials research into a new paradigm after theory, experiment, and computation, which is the fourth paradigm. Through ML, we can fully use the existing experimental data and exploit hidden connections underlying the data to achieve a more accurate prediction of material service performance despite not knowing the underlying principles. Therefore, ML can greatly reduce the time and cost required for experiments. Further, it shows remarkable vitality in predicting material performance. The service behavior of a material is one of the key factors affecting its performance and applications. The service performance prediction of materials has been initially achieved using the data on materials from previous experiments and established databases. Since different ML algorithms greatly affect the accuracy and generalization of the prediction results, selecting a suitable ML algorithm is crucial. In this paper, we summarize and analyze the following standard models for predicting the service performance of metallic materials: random forest, support vector machine, cluster analysis etc. In addition, the development history, advantages, and disadvantages of these models are briefly described. These models have obvious advantages in predicting the service performance of metallic materials and designing new high-performance metallic materials. Furthermore, we present the practical applications of ML algorithms in predicting several typical service performances of metallic materials. In materials research, the chemical composition of metallic materials, test-environment conditions, and other factors can be considered as features and input into ML training models to save time and cost. The models can achieve accurate and effective predictions of the service performance of metallic materials and provide reliable ideas for designing high-performance metallic materials. In this paper, we introduce the application of ML to the three most typical service properties, namely fatigue, creep, and corrosion, whose testing generally has a long time cycle and high cost. Further, we analyze some specific cases and briefly introduce the application of ML in predicting other service properties, such as hydrogen embrittlement and irradiation damage. Finally, the characteristics of ML for the service performance prediction of metallic materials are summarized, a few unresolved, related current problems are analyzed, and related development prospects are presented.

     

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