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<p>The application of reactive alloy materials has become the current research hotspot, and Zr–W alloy has been widely concerned. In this paper, quasi<b>-</b>static mechanical tests of typical W25Zr alloy were carried out to obtain the compressive mechanical properties, and ballistic impact experiments based on quasi-closed chamber were carried out to obtain the cumulative mass distribution of debris and impact energy release characteristics. The mechanical test results showed that the density of the fabricated W25Zr is 7.78&#xa0;g/cm<sup>3</sup>, the compressive yield strength is approximately 954&#xa0;MPa, and the ultimate strength of 1162&#xa0;MPa. The cumulative mass distribution of the material after fragmentation conforms to Weibull distribution, and the overpressure peak generated during the impact process has a strong positive correlation with the impact velocity. When the impact velocity exceeds 1300&#xa0;m/s, the overpressure peak can exceed 0.1&#xa0;MPa. The analysis of the morphology of particles recovered in different atmospheric environments indicates that W25Zr requires oxygen to induce a chemical reaction after impact. At the same time, it is indirectly verified that the particles experience a significant temperature rise process and gas absorption process.</p>

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Dynamic fragmentation and shock‑induced reaction behavior of a W25Zr alloy

  • 期刊论文

  • 发表日期：

    2025年8月5日

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  • Yansong Yang,
  • Zheng Zhang,
  • Zongyu Zhang,
  • Yuan He,
  • Lei Guo,
  • Yue Ma,
  • Jin Chen,
  • Chuanting Wang,
  • Yong He

摘要

The application of reactive alloy materials has become the current research hotspot, and Zr–W alloy has been widely concerned. In this paper, quasi-static mechanical tests of typical W25Zr alloy were carried out to obtain the compressive mechanical properties, and ballistic impact experiments based on quasi-closed chamber were carried out to obtain the cumulative mass distribution of debris and impact energy release characteristics. The mechanical test results showed that the density of the fabricated W25Zr is 7.78 g/cm3, the compressive yield strength is approximately 954 MPa, and the ultimate strength of 1162 MPa. The cumulative mass distribution of the material after fragmentation conforms to Weibull distribution, and the overpressure peak generated during the impact process has a strong positive correlation with the impact velocity. When the impact velocity exceeds 1300 m/s, the overpressure peak can exceed 0.1 MPa. The analysis of the morphology of particles recovered in different atmospheric environments indicates that W25Zr requires oxygen to induce a chemical reaction after impact. At the same time, it is indirectly verified that the particles experience a significant temperature rise process and gas absorption process.