OBRABOTKAMETALLOV MATERIAL SCIENCE Vol. 24 No. 3 2022 Fig. 8. Diagram of composite armor operation in the presence of intermetallic layers in it Prototypes of new composite armor materials based on light metals and alloys developed by the authors of the work during ballistic tests confi rmed the high level of properties declared by the authors and compliance with the high class of protective structure of the EBP according to GOST R 51112–97 and GOST 34282–2017. Conclusions 1. An analysis of the scientifi c and technical literature showed that the traditionally used monometallic armor has a number of key disadvantages that affect the tactical and technical characteristics of the products, namely, signifi cant weight and thickness. It is noted that composite non-metallic armor, in turn, is not able to withstand multiple hits in local areas of the structure due to its complete destruction or delamination. 2. A new scheme of composite reinforcing using explosive welding technology is presented, which allows localizing the development of brittle cracks along interlayer boundaries with external ballistic impact on the object. 3. Reinforced composite material based on titanium and aluminum alloys is obtained by explosive welding. Rational modes of shock-wave loading are determined, which ensure production of composite material of required quality; evaluation of strength of composite is carried out. In order to improve the tactical and technical characteristics of the composite, it was proposed to form high-solid intermetallic layers in its structure due to heat treatment. 4. Rational modes of high-temperature annealing are defi ned, which ensure formation of intermetallic layers of preset thickness in composite structure. The phase composition of intermetallic interlayers was investigated. Mechanism of localization of brittle cracks in composite structure at ballistic action on it is described. The obtained results indicate the prospects of the proposed composite material reinforcing scheme using explosive welding and the manufacture of new types of armor materials based on it for a wide range of products, which combine high bullet resistance and structural strength along with low specifi c gravity. References 1. Bhatnagar A., ed. Lightweight ballistic composites: military and law-enforcement applications. 2nd ed. Amsterdam, Woodhead Publishing is an imprint of Elsevier, 2016. 482 p. DOI: 10.1016/C2014-0-03657-X. 2. Ma Z.D. Lightweight composite armor. Patent US, no. 0089597, 2007. 3. Gruber U., Heine M., Kienzle A., Nixdorf R. Armored products made of fi ber reinforced composite material with ceramic matrix. Patent US, no. 6709736, 2004. 4. Strasser T.E., Atmur S.D. Fiber reinforced ceramic matrix composite armor. Patent US, no. 6314858 V1, 2001. 5. Chen X., ed. Advanced fi brous composite materials for ballistic protection. 2nd ed. Amsterdam, Woodhead Publishing is an imprint of Elsevier, 2016. 548 p. DOI: 10.1016/C2014-0-01733-9.
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