Dynamic Constitutive Model of Tungsten-Whisker-Reinforced Aluminum/Polytetrafluoroethylene Composite Material and Quantitative Determination of Impact Reaction Release Energy in Vacuum Environment

IF 3.4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Engineering Materials Pub Date : 2024-10-10 DOI:10.1002/adem.202400817

Enling Tang, Zhiwei Deng, Ruizhi Wang, Yafei Han, Chuang Chen, Mengzhou Chang, Kai Guo, Liping He

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Abstract

To meet the strength requirements of aluminum/polytetrafluoroethylene (Al/PTFE) in practical applications, tungsten (W) whisker is added into the traditional formula Al/PTFE (26.5%/73.5%) to improve the dynamic compressive strength of the reactive material. Mechanical properties of reactive material specimens prepared by sintering are tested. In the results, it is shown that the dynamic compressive strength of Al/PTFE-reactive material reinforced by tungsten whisker with volume fraction of 13.1% can reach 141 MPa at strain rate of 1800 s⁻¹. The constitutive model of dynamic compression for tungsten-whisker-enhanced Al/PTFE-reactive material is constructed, and the results are basically consistent with the experimental results. The quantitative impact energy release of reactive material specimens under vacuum environment are performed by using the two-stage light gas gun loading system, and the quantitative impact release energies of Al/PTFE-reactive material reinforced by tungsten whisker under different whisker percentage content and diameter are obtained.

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钨须增强铝/聚四氟乙烯复合材料的动态结构模型及真空环境下冲击反应释放能的定量测定

为了满足铝/聚四氟乙烯（Al/PTFE）在实际应用中的强度要求，在传统配方 Al/PTFE （26.5%/73.5%）中加入了钨（W）晶须，以提高反应材料的动态抗压强度。对烧结制备的反应材料试样进行了力学性能测试。结果表明，体积分数为 13.1% 的钨晶须增强 Al/PTFE 反应材料在应变速率为 1800 s-1 时的动态压缩强度可达 141 MPa。构建了钨晶须增强 Al/PTFE 反应材料的动态压缩构效模型，结果与实验结果基本一致。利用两级光气枪加载系统对真空环境下的反应材料试样进行了定量冲击能量释放，得到了不同晶须百分比含量和直径下钨晶须增强 Al/PTFE 反应材料的定量冲击释放能量。

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来源期刊

Advanced Engineering Materials 工程技术-材料科学：综合

CiteScore

5.70

自引率

5.60%

发文量

544

审稿时长

1.7 months

期刊介绍： Advanced Engineering Materials is the membership journal of three leading European Materials Societies - German Materials Society/DGM, - French Materials Society/SF2M, - Swiss Materials Federation/SVMT.