论文标题
使用机器学习和随机优化的基于Fe的软磁材料的加速设计
Accelerated design of Fe-based soft magnetic materials using machine learning and stochastic optimization
论文作者
论文摘要
机器学习被用来有效增强软磁性材料的开发。设计过程包括构建一个由已发布的实验结果组成的数据库,在数据库上应用机器学习方法,确定软磁性材料中磁性的趋势,并通过使用数值优化来加速下一代软磁性纳米晶体材料的设计。对机器学习回归模型进行了训练,以预测磁饱和度($ b_s $),强化($ h_c $)和磁截图($λ$),并使用随机优化框架进一步优化相应的磁性特性。为了验证机器学习模型的可行性,已经预测然后准备和测试,几种优化的软磁材料(根据组成和热力学处理方式指定),显示了预测和实验之间的良好一致性,证明了设计模型的可靠性。进行了两轮优化测试迭代,以搜索更好的特性。
Machine learning was utilized to efficiently boost the development of soft magnetic materials. The design process includes building a database composed of published experimental results, applying machine learning methods on the database, identifying the trends of magnetic properties in soft magnetic materials, and accelerating the design of next-generation soft magnetic nanocrystalline materials through the use of numerical optimization. Machine learning regression models were trained to predict magnetic saturation ($B_S$), coercivity ($H_C$) and magnetostriction ($λ$), with a stochastic optimization framework being used to further optimize the corresponding magnetic properties. To verify the feasibility of the machine learning model, several optimized soft magnetic materials -- specified in terms of compositions and thermomechanical treatments -- have been predicted and then prepared and tested, showing good agreement between predictions and experiments, proving the reliability of the designed model. Two rounds of optimization-testing iterations were conducted to search for better properties.