Investigation of Optimal Megnetic Properties in NdFeB Magnets by Artificial Neural Network
作者单位：College of Materials Science ＆ Engineering College of Materials Science ＆ Engineering School of Computer Science ＆ Engineering Sichuan University Chengdu 610065 China College of Materials Science ＆ Engineering College of Materials Science ＆ Engineering College of Materials Science ＆ Engineering
会议名称：《2004国际稀土研究与应用研讨会（包头）》
会议日期：2004年
学科分类：07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 070205[理学-凝聚态物理] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学]
基 金：Project supported by the National 863 Foundation of China (2001AA324030) the Youth Science and Technology Foundation of Sichuan Province
关 键 词：metal materials artificial neural network uniform design NdFeB magnetic properties rare earths
摘 要：正 In order to study the effect of alloy component on magnetic properties of NdFeB magnets, the experiment schemes are carried out by the uniform design theory, and the relationship between the component and the magnetic properties is established by artificial neural network（ ANN） predicting model. The element contents of alloys are optimized by the ANN model. Meanwhile, the influences of mono-factor or multi-factor interaction on alloy magnetic properties are respectively discussed according to the curves ploted by ANN model. Simulation result shows that the predicted and measured results are in good agreement. The relative error is every low, the error is not more than 1.68% for remanence Br, 1.56% for maximal energy product （BH）m, and 7. 73% for coercivity Hcj. Hcj can be obviously improved and Br can be reduced by increasing Nd or Zr content. Co and B have advantageous effects on increasing Br and disadvantageous effects on increasing Hcj. Influence of alloying elements on Hcj and Br are inverse, and the interaction among the alloying elements play an important role in the magnetic properties of NdFeB magnets. The ANN prediction model presents a new approach to investigate the nonlinear relationship between the component and the magnetic properties of NdFeB alloys.