纳米晶材料
退火(玻璃)
合金
材料科学
均质化(气候)
化学工程
冶金
纳米技术
工程类
生物多样性
生态学
生物
作者
Guoguo Xi,Cheng Sun,Minhao Han,Haiguang Li,Jiali Cui,Tao Zhang
标识
DOI:10.1016/j.jnoncrysol.2024.122951
摘要
Herein, a novel Fe-P-C-B-Cu nanocrystalline alloy with 0.6 at.% Cu is reported, which has extremely high thermal stability and excellent soft magnetic properties. We exploited the tendency of P element to bond with metal elements and observed that Cu enhances its distribution uniformity in the matrix by spontaneously forming Cu-P clusters. Notably, P can disperse immiscible elements during annealing process, meaning that the decomposition of Cu-P clusters precipitated nano fcc-Cu phase. This, in turn, facilitates the heterogeneous nucleation of α-Fe and further improve the grain refinement of α-Fe. Additionally, the residual P-rich clusters significantly hinder the coarsening of α-Fe grains, leading to the formation of stable, uniform and fine crystal microstructure. This work will provide new insights into the design, manufacture and commercialization of Fe-based soft magnetic materials with wide annealing temperature windows and ultra-high thermal stability.
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