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<p>The influence of the composition and structure of a multilayer titanium-based material on its behaviour under impact testing conditions was studied. The material consisted of four consecutive layers of: (i) metal matrix composite (MMC) based on Ti64 alloy (wt. 6.1% Al-4% V) reinforced with 40 vol % dispersed TiC particles, (ii) Ti64 alloy, (iii) porous commercial purity titanium (about 60% pores), and (iv) the bottom layer of Ti64 alloy. MMC and Ti64 alloy layers were deposited on a layer of porous Ti using a coaxial electron beam 3D printing method with a commercial Ti64 wire, and a specially designed cored wire as the feedstock. The overall density of the layered material was less than 3&#xa0;g/cm<sup>3</sup>. An impact test conducted with a 7.62&#xa0;mm calibre armour-piercing cartridge (with a bullet kinetic energy of 3430&#xa0;J) demonstrated high ballistic resistance when a hard bullet core penetrated the sample to a depth of approximately 20&#xa0;mm, where it was stopped within the porous titanium layer and subsequently ejected from the sample. The features of the microstructure of this four-layer material in different locations and their role in ballistic resistance are considered and discussed.</p>

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Terminal ballistic effects for 3D-printed multi-layered material consisting of Ti-6Al-4V alloy, metal matrix composite and porous titanium

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月14日

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  • Dmytro V. Kovalchuk,
  • Dmytro G. Savvakin,
  • Jacek Janiszewski,
  • Bartosz Fikus,
  • Krzysztof Piasta,
  • Vasyl Nevmerzhytskiy,
  • Vasyl Tkachuk,
  • Oleksandr O. Stasiuk,
  • Denis V. Oryshych,
  • Mykola A. Skoryk,
  • Judyta Sienkiewicz,
  • Pavlo E. Markovsky

摘要

The influence of the composition and structure of a multilayer titanium-based material on its behaviour under impact testing conditions was studied. The material consisted of four consecutive layers of: (i) metal matrix composite (MMC) based on Ti64 alloy (wt. 6.1% Al-4% V) reinforced with 40 vol % dispersed TiC particles, (ii) Ti64 alloy, (iii) porous commercial purity titanium (about 60% pores), and (iv) the bottom layer of Ti64 alloy. MMC and Ti64 alloy layers were deposited on a layer of porous Ti using a coaxial electron beam 3D printing method with a commercial Ti64 wire, and a specially designed cored wire as the feedstock. The overall density of the layered material was less than 3 g/cm3. An impact test conducted with a 7.62 mm calibre armour-piercing cartridge (with a bullet kinetic energy of 3430 J) demonstrated high ballistic resistance when a hard bullet core penetrated the sample to a depth of approximately 20 mm, where it was stopped within the porous titanium layer and subsequently ejected from the sample. The features of the microstructure of this four-layer material in different locations and their role in ballistic resistance are considered and discussed.