The effects of tungsten content on the mechanical behavior, ignition and energy-release characteristics of short-tungsten-fibers/Zr-BMGCs under dynamic loading

IF 7.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design Pub Date : 2025-02-08 DOI:10.1016/j.matdes.2025.113703

Xin Yu, Jianbin Li, Xiqiang Gai, Chong Chen, Zhenxiong Wang, Xin Zhao, Hongwei Zhao, Kaichuang Zhang

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引用次数: 0

Abstract

The short tungsten fibers/Zr-based bulk metallic glass composites (SWF/Zr-BMGCs) were prepared by melt infiltration casting. The effects of tungsten content on mechanical properties and energy-release characteristics under dynamic loading of Zr_59.62Cu_14.4Ni₁₂Al₁₀Nb₃Hf_0.78Y_0.2 bulk metallic glasses (Zr-BMGs) were systematically investigated. Increasing tungsten content enhanced the mechanical strength of SWF/Zr-BMGCs from 1543 MPa to 1984 MPa by inhibiting propagation of shear bands, and ballistic gun tests demonstrated that tungsten fibers significantly improved the penetration capability of SWF/BMGC fragments. However, analysis of binarized images and quasi-closed chamber overpressure data indicated that the flare area and peak overpressure are reduced at the same impact velocity of 1000 m/s, reflecting a lower energy density per unit mass and reaction efficiency of 435.5 J/g and 4.14 % for SWF/Zr-BMGCs compared to 1592.1 J/g and 15.12 % of Zr-BMGs. This primarily results from the reduced exposed oxidation area during impact due to larger fragmented sizes and interfacial adhesion effects. In addition, the active elements Zr, Al, and Ni could burn preferentially under impact, which in turn contributes to the oxidation of elements Cu and W with high melting points. This work could improve the understanding of energy-release behavior of ex-situ second-phase reinforced Zr-BMGs under impact and support their further application.

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来源期刊

Materials & Design Engineering-Mechanical Engineering

CiteScore

14.30

自引率

7.10%

发文量

1028

审稿时长

85 days

期刊介绍： Materials and Design is a multi-disciplinary journal that publishes original research reports, review articles, and express communications. The journal focuses on studying the structure and properties of inorganic and organic materials, advancements in synthesis, processing, characterization, and testing, the design of materials and engineering systems, and their applications in technology. It aims to bring together various aspects of materials science, engineering, physics, and chemistry. The journal explores themes ranging from materials to design and aims to reveal the connections between natural and artificial materials, as well as experiment and modeling. Manuscripts submitted to Materials and Design should contain elements of discovery and surprise, as they often contribute new insights into the architecture and function of matter.