Attractive magnetic properties in as-cast bulk metallic glasses

IF 3.2 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of Non-crystalline Solids Pub Date : 2025-02-08 DOI:10.1016/j.jnoncrysol.2025.123437

Junhu Liu , Fengyu Kong , Chuanhui Cheng , Shiqiang Yue , Wenli Song , Haipeng Wang , Anding Wang

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引用次数: 0

Abstract

We proposed an in-situ stress release strategy for combing magnetic and mechanic properties in the bulk metallic glass (BMG), via balancing the solidification and microstructure relaxation processes. In this proof-of-concept study, the effectiveness is validated in typical Fe-based, FeCo-based, CoFe-based and FeNi-based BMG rings. It was found that the as-cast BMGs with superior strength and hardness exhibit excellent soft-magnetic properties without annealing, including a super-low coercivity of 1.4–2.9 A/m, high effective permeability of 3.3–13.7 k and low loss (P_{50, 200}) of 0.04–0.06 W/kg, which are about 0.8–1.6 %, 14–59 times and 9–12.8 % that of the electrical iron rings, respectively. The magnetic properties are stable at service temperatures of 25–150 °C. The excellent soft-magnetic properties are ascribed to the low anisotropy of the uniform structure and weak pinning effect of the domain. These results pave a new route for evading the annealing induced brittleness dilemma and combining the mechanic-magnetic properties for the advanced BMGs.

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来源期刊

Journal of Non-crystalline Solids 工程技术-材料科学：硅酸盐

CiteScore

6.50

自引率

11.40%

发文量

576

审稿时长

35 days

期刊介绍： The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.