定制压力效果，优化Ni80P20金属玻璃的整体结构特征

IF 2.1 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER

Solid State Communications Pub Date : 2025-02-07 DOI:10.1016/j.ssc.2025.115872

Aasma Tabassum , Tahir Bashir , YuWei Liu , Amir Muhammad , Maryam Sardar , Zaka Ullah , Ying Liu , Jing Tao Wang

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引用次数: 0

摘要

以成分相对简单的Ni80P20金属玻璃为模型材料，利用分子动力学模拟研究了冷却过程中压力对局部原子结构的影响。包括Voronoi镶嵌在内的各种结构分析方法表明，压力（0-15 GPa）的增加显著提高了玻璃化转变温度（Tg），从565 K提高到765 K，促进了原子结构的致密化。虽然整体的短程结构（如二十面体结构）保持相对稳定，但压力引起的原子配位和填充效率的变化表明机械强度和热稳定性得到了提高。这些发现为合金熔体在压力下形成非晶态相的动力学及其优化各种应用金属玻璃物理性能的潜力提供了有价值的见解。

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Tailoring the pressure effects to optimize the global structural features in Ni80P20 metallic glasses

The Ni₈₀P₂₀ metallic glass, with a relatively simple composition, was used as a model material to study the effect of pressure on the local atomic structure during the cooling process using molecular dynamics simulations. Various structural analysis methods, including Voronoi tessellation, revealed that increasing pressure (0–15 GPa) significantly enhances glass transition temperature (T_g) from 565 K to 765 K and promotes densification of the atomic structure. While the global short-range order, such as icosahedral configurations, remains relatively stable, pressure-induced shifts in atomic coordination and packing efficiency suggest enhanced mechanical strength and thermal stability. These findings provide valuable insights into the kinetics of amorphous phase formation of the alloy melt under pressure and its potential for optimizing the physical properties of metallic glasses for various applications.

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来源期刊

Solid State Communications 物理-物理：凝聚态物理

CiteScore

3.40

自引率

4.80%

发文量

287

审稿时长

51 days

期刊介绍： Solid State Communications is an international medium for the publication of short communications and original research articles on significant developments in condensed matter science, giving scientists immediate access to important, recently completed work. The journal publishes original experimental and theoretical research on the physical and chemical properties of solids and other condensed systems and also on their preparation. The submission of manuscripts reporting research on the basic physics of materials science and devices, as well as of state-of-the-art microstructures and nanostructures, is encouraged. A coherent quantitative treatment emphasizing new physics is expected rather than a simple accumulation of experimental data. Consistent with these aims, the short communications should be kept concise and short, usually not longer than six printed pages. The number of figures and tables should also be kept to a minimum. Solid State Communications now also welcomes original research articles without length restrictions. The Fast-Track section of Solid State Communications is the venue for very rapid publication of short communications on significant developments in condensed matter science. The goal is to offer the broad condensed matter community quick and immediate access to publish recently completed papers in research areas that are rapidly evolving and in which there are developments with great potential impact.