具有协同中子和γ射线屏蔽性能的新型(B4C + TiZrNbTa)/Al6061复合材料界面行为的多尺度研究

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-10-06 DOI:10.1016/j.compositesa.2025.109341

Bohai Yang , Chunjuan Cui , Mi Chen , Huan Li , Lei Luo , Junjie Wang , Xionghou Peng

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引用次数: 0

摘要

采用真空热压法制备了一种新型(B4C + TiZrNbTa)/Al6061中子γ射线协同屏蔽材料。与市售的中子和γ射线吸收比分别为100%和31%的屏蔽材料相比，该材料显示出更全面的屏蔽能力。此外，通过计算模拟和实验表征相结合的多尺度研究，阐明了TiZrNbTa/Al体系中的界面扩散行为和金属间化合物（IMCs）的形成机制。结果表明，TiZrNbTa/Al界面由三个不同的区域组成，其中形成了三种不同的IMCs。利用分子动力学（MD）模拟了TiZrNbTa/Al体系的扩散过程，结果表明Ti和Zr原子比Nb和Ta原子具有更高的扩散速率，有利于AlmTin和AlmZrn IMCs的形成。本研究展示了一种新型复合材料，它具有强大的中子和γ射线屏蔽性能，Al和TiZrNbTa相之间发生了纳米级界面反应。

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Multiscale study of the interfacial behavior of novel (B4C + TiZrNbTa)/Al6061 composites with synergistic neutron and γ-ray shielding properties

A novel (B₄C + TiZrNbTa)/Al6061 neutron and γ-ray synergistic shielding material was fabricated by vacuum hot pressing method. The material demonstrates more comprehensive shielding capabilities compared to commercially available shielding materials with a neutron and γ-ray absorption ratio equal to 100 and 31 %, respectively. In addition, a multiscale investigation integrating computational simulations and experimental characterization was conducted to elucidate the interfacial diffusion behavior and intermetallic compounds (IMCs) formation mechanisms within the TiZrNbTa/Al system. The results demonstrate that the TiZrNbTa/Al interface comprises three distinct regions, within which three different IMCs are formed. Furthermore, the diffusion process of the TiZrNbTa/Al system was simulated by Molecular Dynamics (MD) and the results indicated that Ti and Zr atoms exhibited higher diffusion rates compared with Nb as well as Ta atoms, facilitating the formation of Al_mTi_n and Al_mZr_n IMCs. This current study demonstrates a novel composite material that exhibit robust neutron and γ-ray shielding behavior with nanoscale interfacial reaction between the Al and TiZrNbTa phase occurred.

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.