The shock-induced chemical reaction behaviour of Al/Ni composites by cold rolling and powder compaction

Xiong, Wei; Zhang, Xianfeng; Liu, Zheng; Bao, Kuo; Chen, Haihua; Guan, Zhongwei

doi:10.1007/s10853-019-03357-3

Cited by 27 publications

(2 citation statements)

References 31 publications

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“…At the same time, an obvious curling phenomenon can be observed from the back of the skin target plate. Energetic fragments not only have a kinetic energy-induced plugging and perforation effect on the front skin target but also have a certain reaming effect. , Due to the coupling effect of kinetic energy and thermal energy of Al/Ni/Cu energetic fragments, the high temperature generated by the shock-induced chemical reaction will lead to local softening or even melting of the target plate.…”

Section: Resultsmentioning

confidence: 99%

Mechanism of Cu Effect on Energy Release of Al/Ni/Cu Energetic Composites

Wang,

Xiong,

Chang

et al. 2024

J. Phys. Chem. C

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The improvement of mechanical properties and the reduction of the reaction energy release rate can make Al/Ni energetic composites have better penetration as fragment materials. In this paper, the influence mechanism of the addition and content of Cu particles on the mechanical properties and energy release of Al/Ni energetic composites has been studied in detail. The Cu deposited on the Al−Ni interface hinders the direct contact between Al and Ni and the rapid exothermic reaction, which increases the initial reaction temperature of Al/Ni energetic composites from 427 to 516 °C. However, the addition of Cu can significantly improve the plasticity of energetic composites. When the Cu content increased to 20%, the elongation of the composite increased by 29.7%. In the steady-state exothermic reaction process of Al/Ni/Cu energetic composites, Cu will hinder the solid− solid interface reaction between Al and Ni, enhance the sensitivity of the initial reaction, and reduce the rate of the exothermic reaction. In the process of shock-induced chemical reaction (SICR), Cu does not only participate in the exothermic reaction but also the hindrance of Cu particles leads to the decrease of the reaction rate. When the Cu content is 10%, the duration of the shockinduced chemical reaction is extended from 160 to 250 ms. The research on the energy release mechanism of Al/Ni/Cu energetic composites under steady-state heating and high-speed impact will provide an important theoretical basis for the practical application of this material.

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Section: Resultsmentioning

confidence: 99%

Mechanism of Cu Effect on Energy Release of Al/Ni/Cu Energetic Composites

Wang,

Xiong,

Chang

et al. 2024

J. Phys. Chem. C

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“…They can increase the lethality of warheads due to their dual functionality. Reactive materials are usually composed of two or more non-explosive solids, which remain inert and do not react with each other under normal circumstances [1,2]. However, when given enough mechanical, electrical, or laser stimulation, they will quickly release a large amount of chemical energy for rapid combustion or explosion, which has a good prospect of military application [3].…”

Section: Introductionmentioning

confidence: 99%

Study on the blast impulse characters of high explosive charge with reactive metal casing

Zhang

Xiong

et al. 2023

Propellants Explo Pyrotec

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This paper focuses on the blast impulse characters of high explosive charge with reactive metal casing. Explosive driving experiments were carried out for high explosive charge with different thicknesses of reactive metal casings and traditional 2 A12 aluminum alloy casings. The power of charge with the two casings was evaluated by analyzing the deformation of 0.3 mm thick Q235 steel foil under the action of the shock wave. Based on the principle of energy conservation, the deflection calculation model of steel foil under explosion load was established. The maximum deflection of plastic deformation of steel foil at different distances under the action of explosive loading caused by the charge with different material casing was calculated. The characteristics of the steel foil damaged by the explosion shock wave generated by the charge with a reactive metal casing were analyzed and compared with the blast impulse of the charge with the traditional 2 A12 aluminum alloy casing. The results show that, with the increase of the thickness of the reactive metal casing, the maximum deflection of the plastic deformation of the steel foil increased, that is, the damage effect to the target improved. The theoretical model of the maximum deflection of plastic deformation of steel foil under explosive loading can accurately predict the deflection of steel foil under explosive loading, and provide a theoretical basis for evaluating the damage effect of reactive materials driven by the explosion. The experimental results showed that the reactive metal casing has a good application prospect in realizing high‐efficiency damage.

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Challenges to model the role of heterogeneities on the shock response and spall failure of metallic materials at the mesoscales

Dongare

2019

J Mater Sci

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The shock-induced chemical reaction behaviour of Al/Ni composites by cold rolling and powder compaction

Cited by 27 publications

References 31 publications

Mechanism of Cu Effect on Energy Release of Al/Ni/Cu Energetic Composites

Mechanism of Cu Effect on Energy Release of Al/Ni/Cu Energetic Composites

Study on the blast impulse characters of high explosive charge with reactive metal casing

Challenges to model the role of heterogeneities on the shock response and spall failure of metallic materials at the mesoscales

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