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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 >The effect of grain boundary energy on the amorphous forming composition range of Zr-Fe-Al ternary system
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The effect of grain boundary energy on the amorphous forming composition range of Zr-Fe-Al ternary system

机译：晶界能对Zr-Fe-Al三元体系非晶形成组成范围的影响

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Mechanical alloying (MA), as one of the main methods of solid state amorphization (SSA), has been intensively used to prepare amorphous alloys. The composition of alloys and processing conditions of MA is very sensitive for the amorphous forming ability (AFA) or/and amorphous forming composition range (AFCR). During the MA processing, the powder was severely plastically deformed and broken into tiny grains with sub-micro or even nano scale size. In this work, a method for AFCR prediction of ternary system has been proposed based on a thermodynamic point of view and including the size-dependent grain boundary energy. The Gibbs free energy (Delta G) of Zr-Fe-Al system has been-calculated with the different grain sizes. Compared with the experimental data, the present calculations are reasonable. The present calculations indicate-that the smaller the grain size, the wider AFCR for Zr-Fe-Al system is. The present results also indicate that the higher Fe-Zr content alloys have higher AFA, and grain refinement benefits on extending the AFCR. (C) 2015 Elsevier B.V. All rights reserved.
机译：机械合金化（MA）作为固态非晶化（SSA）的主要方法之一，已被广泛用于制备非晶态合金。 MA的合金组成和加工条件对非晶形成能力（AFA）或/和非晶形成组成范围（AFCR）非常敏感。在MA处理过程中，粉末会发生严重的塑性变形，并破碎成亚微米或什至纳米级的微小晶粒。在这项工作中，基于热力学观点，提出了一种用于三元体系AFCR预测的方法，该方法包括与尺寸有关的晶界能。计算了不同晶粒尺寸的Zr-Fe-Al体系的吉布斯自由能（Delta G）。与实验数据相比，目前的计算是合理的。当前的计算表明-Zr-Fe-Al系统的晶粒尺寸越小，AFCR越宽。目前的结果还表明，Fe-Zr含量较高的合金具有较高的AFA，并且在扩展AFCR时晶粒细化有益。 （C）2015 Elsevier B.V.保留所有权利。

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