Investigation on the thermal stability, crystallization kinetics and magnetic properties of Fe-Si-B-P-C-Nb amorphous alloys

IF 7.1 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Progress in Natural Science: Materials International Pub Date : 2025-06-01 DOI:10.1016/j.pnsc.2025.03.010

Yifan He, Rui Sun, Zilong Xu, Jingjing Huang, Songwei Wang, Chengying Tang

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引用次数: 0

Abstract

This study examines the thermal stability, isothermal and non-isothermal crystallization kinetics, and soft magnetic properties of Fe-Si-B-P-C-Nb amorphous alloys. Phase transformations were analyzed using X-ray diffraction (XRD) and differential scanning calorimetry (DSC). Under non-isothermal conditions, activation energies, local activation energies and local Avrami exponents were calculated to investigate nucleation and growth mechanisms during crystallization. The results indicate that characteristic temperatures vary with the heating rate, while activation energy values confirm the superior thermal stability of the Fe_82.8Si_0.2B₁₂P_2.25C_2.25Nb_0.5 alloy. During crystallization, local activation energy initially increases before reaching a peak and subsequently decreasing. The local Avrami exponent further suggests that crystallization in both amorphous ribbons is predominantly governed by three-dimensional growth with fluctuating nucleation rates. Additionally, the isothermal crystallization kinetics of the Fe_82.8Si_0.2B₁₂P_2.25C_2.25Nb_0.5 amorphous ribbon were analyzed to deepen our understanding of the crystallization mechanisms and provide theoretical insights for optimizing material properties. By fine-tuning annealing parameters, the crystallization behavior can be controlled to achieve different crystallized volume fractions, thereby developing nanocrystalline materials with enhanced soft magnetic properties. Specifically, the saturation magnetization flux density (B_s) reached 1.79 T, while the coercivity (H_c) was as low as 5.2 A/m.

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Fe-Si-B-P-C-Nb非晶合金的热稳定性、结晶动力学和磁性能研究

本研究考察了Fe-Si-B-P-C-Nb非晶合金的热稳定性、等温和非等温结晶动力学以及软磁性能。用x射线衍射（XRD）和差示扫描量热法（DSC）分析了相变。在非等温条件下，计算了活化能、局部活化能和局部Avrami指数，研究了结晶过程中的成核和生长机制。结果表明：Fe82.8Si0.2B12P2.25C2.25Nb0.5合金的特征温度随升温速率的变化而变化；结晶过程中，局部活化能先增大后达到峰值，随后减小。局部Avrami指数进一步表明，两种非晶带的结晶主要受三维生长和波动成核速率的控制。此外，还分析了Fe82.8Si0.2B12P2.25C2.25Nb0.5非晶带的等温结晶动力学，以加深对结晶机理的理解，并为优化材料性能提供理论见解。通过微调退火参数，可以控制结晶行为，获得不同的结晶体积分数，从而开发出软磁性能增强的纳米晶材料。饱和磁化磁通密度（Bs）达到1.79 T，矫顽力（Hc）低至5.2 A/m。

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来源期刊

Progress in Natural Science: Materials International 综合性期刊-综合性期刊

CiteScore

8.60

自引率

2.10%

发文量

2812

审稿时长

49 days

期刊介绍： Progress in Natural Science: Materials International provides scientists and engineers throughout the world with a central vehicle for the exchange and dissemination of basic theoretical studies and applied research of advanced materials. The emphasis is placed on original research, both analytical and experimental, which is of permanent interest to engineers and scientists, covering all aspects of new materials and technologies, such as, energy and environmental materials; advanced structural materials; advanced transportation materials, functional and electronic materials; nano-scale and amorphous materials; health and biological materials; materials modeling and simulation; materials characterization; and so on. The latest research achievements and innovative papers in basic theoretical studies and applied research of material science will be carefully selected and promptly reported. Thus, the aim of this Journal is to serve the global materials science and technology community with the latest research findings. As a service to readers, an international bibliography of recent publications in advanced materials is published bimonthly.