团簇连接方式对铁基非晶形成能力与软磁性能的综合作用机理

同时提高非晶形成能力和软磁性能是铁基非晶合金理论研究和工业应用中的重点与难点问题。本项目拟以团簇连接方式为桥梁，研究多元铁基合金非晶形成能力与软磁性能的内在关联。通过合金成分设计，获得多元铁基非晶团簇结构及团簇间的原子共享连接机制，研究其对非晶形成能力的影响规律，进一步探究团簇结构及其连接机制与饱和磁感应强度及矫顽力的相关性；探索非晶形成能力与软磁性能的内在结构本质，建立团簇连接机制-非晶形成能力-软磁性能三者的构效关系，进而优化非晶团簇结构，通过调控团簇间共享原子数量及原子种类增强非晶形成能力，同时进一步提高饱和磁感应强度并降低矫顽力；探索非晶形成能力与软磁性能之间的普适性规律，为非晶软磁材料的设计和性能优化提供理论支撑和实验指导。

It is an important and difficult problem in the theoretical research and industrial application of Fe-based amorphous alloys to improve both the glass forming ability (GFA) and soft magnetic properties. In this project, the connection modes of the clusters will be used as a bridge to study the intrinsic relationship between the GFA and the soft magnetic properties in multicomponent Fe-based alloys. By the composition design, the structures and connection modes of the clusters in the multicomponent Fe-based amorphous alloys will be obtained. The laws of influences of the connection modes on the GFA as well as the saturation flux density Bs and the coercivity Hc will be studied. The intrinsic structural relationship between the GFA and soft magnetic properties will be explored, and the relationship among atom-shared connection modes of the clusters-GFA-soft magnetic properties will be established. Based on the structure-properties relationship, the cluster structures will be modified. By regulating the numbers and types of the shared atoms between clusters, the GFA will be improved. At the same time, the Bs will be enhanced and Hc will be reduced. This project aims at exploring the general rules between GFA and soft magnetic properties, and providing theoretical supports and experimental guidance for the design and performance improvement of amorphous soft magnetic materials.