Investigation of the microstructural, microhardness, neutron, and secondary gamma-ray shielding properties of Al-B-W composite

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-06-28 DOI:10.1016/j.radphyschem.2025.113122

Yasin Gaylan

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引用次数: 0

Abstract

In this study, Al6061-20B-xW (x: 0, 5, 10 and 15) composite powders were produced by mechanical alloying and formed into cylindrical specimens by uniaxial cold pressing and their microstructural, microhardness and radiation shielding properties were comprehensively analyzed. Structural properties were investigated using advanced characterization techniques such as X-ray diffraction, energy-dispersive X-ray spectroscopy, and scanning electron microscopy. These analyses provided detailed data on the distribution and effect of W doping within the composite matrix. The addition of W increased the composite's density from 2.54 g/cm3 to 2.82 g/cm3 and its microhardness from 143.5 Hv to 232.1 Hv. Corrosion resistance improved with 5% W addition but declined with 10% and 15% W additions. The composite's radiation shielding performance against neutron and gamma rays was calculated using the Monte Carlo N-Particle Transport simulation code. Calculations indicate that W doping increases the neutron macroscopic cross-section and contributes to the absorption of secondary gamma rays arising from the neutron-boron interaction. With the addition of W, the secondary gamma-ray intensity decreased from 5.71×10-6 to 5.48×10-6, while the gamma-ray linear attenuation coefficient increased from 0.216cm-1 to 0.265cm-1. This study demonstrated that the addition of W to the Al-B composite investigated for neutron shielding enhances its effectiveness against both neutrons and the secondary gamma rays generated during neutron absorption.

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Al-B-W复合材料的显微组织、显微硬度、中子和二次γ射线屏蔽性能研究

本研究采用机械合金化法制备Al6061-20B-xW （x: 0、5、10和15）复合粉末，通过单轴冷压成形成圆柱形试样，综合分析其显微组织、显微硬度和辐射屏蔽性能。利用先进的表征技术，如x射线衍射、能量色散x射线光谱学和扫描电子显微镜研究了结构性质。这些分析提供了W掺杂在复合基体中的分布和影响的详细数据。W的加入使复合材料的密度由2.54 g/cm3提高到2.82 g/cm3，显微硬度由143.5 Hv提高到232.1 Hv。当W含量为5%时，耐蚀性有所提高，但当W含量为10%和15%时，耐蚀性有所下降。利用蒙特卡罗n粒子输运模拟程序计算了复合材料对中子和伽马射线的辐射屏蔽性能。计算表明，W掺杂增大了中子宏观截面，有助于吸收中子-硼相互作用产生的二次伽马射线。随着W的加入，二次伽马射线强度从5.71×10-6减小到5.48×10-6，伽马射线线性衰减系数从0.216cm-1增大到0.265cm-1。本研究表明，在Al-B复合材料中加入W可以增强其对中子和中子吸收过程中产生的二次伽马射线的屏蔽效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.