Zhang Di, Su Yingtao, Yang Xingrui, Sun Huilan, Guo Zhihong, Wang Bo, Ma Cheng, Dong Zhongqi, Zhu Liguang
Hebei Key Laboratory of Material Near-net Forming Technology, School of Materials Science and Engineering, Hebei University of Science and Technology, Hebei 050018, China.
Technology Research Institute, HBIS Group, Hebei 052160, China.
ACS Omega. 2023 Feb 24;8(9):8461-8472. doi: 10.1021/acsomega.2c07510. eCollection 2023 Mar 7.
Based on the ordered phase effectively suppressed by rapid solidification technology, the grain refinement concept using Cu is incorporated into the soft magnetic materials. Cu dosage not only could refine the grain size with an average grain size of 8.7 μm but also improve the continuity and consistency of Fe-6.5 wt % Si steel strip. It mainly attributes to the Cu-rich particles precipitating at the grain boundary, nailing the grain boundaries movement and inhibiting the grain growth, and then improving the magnetic properties and mechanical properties. The 1.5 wt % Cu sample exhibits an excellent magnetic property with the saturation magnetization of 236.54 emu/g, which mainly attributes to the strong η, λ, Goss texture formation and the band structure optimization of Si-Cu comodification. Furthermore, the mechanical properties of the steel strip are effectively improved, and the failure plastic deformation of 1.5 wt % Cu steel strip is about 11%. The rapid solidification with Cu-dosage refinement technology also has a remarkable reference on the mechanical properties and magnetic properties modification of other metal materials.
基于快速凝固技术有效抑制的有序相，将使用铜的晶粒细化概念引入软磁材料中。铜的用量不仅可以细化晶粒尺寸，平均晶粒尺寸为8.7μm，还可以提高Fe-6.5 wt%硅钢带的连续性和一致性。这主要归因于富铜颗粒在晶界处析出，钉扎晶界移动并抑制晶粒生长，进而改善磁性能和力学性能。1.5 wt%铜的样品表现出优异的磁性能，饱和磁化强度为236.54 emu/g，这主要归因于强η、λ、高斯织构的形成以及硅-铜共改性的能带结构优化。此外，钢带的力学性能得到有效改善，1.5 wt%铜钢带的失效塑性变形约为11%。含铜量细化的快速凝固技术对其他金属材料的力学性能和磁性能改性也具有显著的参考意义。
