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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Crystallization behavior of Fe84B10C6 amorphous alloy under high magnetic field
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Crystallization behavior of Fe84B10C6 amorphous alloy under high magnetic field

机译：Fe84B10C6非晶态合金在高磁场下的结晶行为

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摘要

High magnetic field is a powerful tool in controlling the crystallization processes of amorphous alloys. The main objective of the paper is to clarify the effect of high magnetic field on the crystallization of Fe84B10C6 amorphous ribbons. The non-isothermal crystallization kinetics of the as-spun amorphous alloy was firstly investigated using a continuous differential scanning calorimetric (DSC) technique, then the isothermal crystallization processes of the amorphous alloy were performed under a magnetic field of 0 or 12 Testa (T). The annealed samples were characterized using DSC, X-ray diffraction, and transmission electron microscopy. The JMA exponent n at the initial stage of the first crystallization reaction is about 2.5. The crystallization starts with a homogenous nucleation, then the nucleation rate continuously decreases to zero, and the crystallization proceeds with the growth. The alpha-Fe precipitates from the Fe84B10C6 amorphous matrix at the isothermal annealing temperatures investigated, and the 12 Thigh magnetic field enhances the precipitation of alpha-Fe. The volume fraction and number of the precipitated alpha-Fe crystals in the alloys annealed under the 12 Thigh magnetic field are greatly larger than those in the alloys annealed at the same temperature without the magnetic field. However, the magnetic field has no obvious influence on the average grain size of the alpha-Fe crystals. The mechanism of the high magnetic field on the crystallization of the Fe84B10C6 amorphous alloy is to enhance the nucleation of the alpha-Fe. (C) 2015 Elsevier B.V. All rights reserved.
机译：高磁场是控制非晶态合金结晶过程的有力工具。本文的主要目的是阐明高磁场对Fe84B10C6非晶带的结晶的影响。首先使用连续差示扫描量热（DSC）技术研究了初生非晶态合金的非等温结晶动力学，然后在0或12 Testa（T）的磁场下进行了非晶态合金的等温结晶过程。 。使用DSC，X射线衍射和透射电子显微镜对退火后的样品进行表征。在第一结晶反应的初始阶段的JMA指数n为约2.5。结晶开始于均相成核，然后成核速率连续降低至零，并且结晶随着生长而继续进行。在研究的等温退火温度下，α-Fe从Fe84B10C6非晶态基质中析出，并且12 Thigh磁场增强了α-Fe的析出。在12 Thigh磁场下退火的合金中，析出的α-Fe晶体的体积分数和数量比在没有磁场的相同温度下退火的合金中的要大得多。然而，磁场对α-Fe晶体的平均晶粒尺寸没有明显的影响。高磁场对Fe84B10C6非晶态合金结晶的作用是增强α-Fe的成核作用。 （C）2015 Elsevier B.V.保留所有权利。

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