Multilayered steel armour

Abstract

The multilayered steel armour consisting of the front-face ballistic-resistant armour layer ( 1 ) and the backing armour layer ( 2 ), which are fully metallurgically bonded by means of at least one joining metallic intermediate layer ( 3 ), for example, by casting, wide-area welding techniques, using technology of explosive cladding (high-velocity impact cladding), by roll welding or by a combination of the previous techniques. The joining metallic intermediate layer ( 3 ) between the front-face ballistic-resistant armour layer ( 1 ) and the backing armour layer ( 2 ) is made from the material featuring the face-centered cubic crystalline lattice (FCC lattice), in particular, from the nickel alloy containing maximally 98.0 wt % of nickel and/or from steel.

1 . Multilayered steel armour consisting of a front-face ballistic-resistant armour layer ( 1 ) and a backing armour layer ( 2 ), which are fully metallurgically bonded by means of at least one joining metallic intermediate layer ( 3 ), for example, by casting, wide-area welding techniques, using technology of explosive cladding (high-velocity impact cladding), by roll welding or by a combination of the previous techniques, wherein the joining metallic intermediate layer ( 3 ) between the front-face ballistic-resistant armour layer ( 1 ) and the backing armour layer ( 2 ) is made from material featuring face-centered cubic crystalline lattice (FCC lattice), in particular, from nickel alloy containing maximally 98.0 wt % of nickel and/or from steel.  
   
   
       2 . Multilayered steel armour according to  claim 1 , wherein the material of the joining metallic intermediate layer ( 3 ) contains between 50.0 wt % and 98.0 wt % of nickel, between 0.1 wt % and 45.0 wt % of at least one of the alloying elements such as chromium, molybdenum, manganese, niobium, titanium, iron and the rest making some other accompanying elements and usual impurities.  
   
   
       3 . Multilayered steel armour according to  claim 1 , wherein the material of the joining metallic intermediate layer ( 3 ) contains between 5.0 wt % and 50.0 wt % of nickel, in total between 0.1 wt % and 40.0 wt % of chromium, manganese, molybdenum, niobium and titanium as alloying elements, while the rest of the content is iron and other accompanying elements and usual impurities.  
   
   
       4 . Multilayered steel armour according to  claim 1 , wherein the material of the joining metallic intermediate layer ( 3 ) contains from 8.0 wt % to 30.0 wt % of manganese, in total from 0.1 wt % to 30.0 wt % of chromium, nickel, vanadium, silicone and carbon in the role of as alloying elements while the rest is represented by iron and other accompanying elements and usual impurities.  
   
   
       5 . Multilayered steel armour according to  claim 1 , including at least one additional internal armour layer ( 4 , 5 ) placed between the front-face ballistic-resistant layer ( 1 ) and the backing armour layer ( 2 ) while the joining metallic intermediate layers ( 3 ) are arranged accordingly between all the armour layers ( 1 ,  2 ,  4 ,  5 ) present in an armour sandwich.  
   
   
       6 . Multilayered steel armour according to  claim 5 , wherein the inserted internal armour layers ( 4 , 5 ) is formed from steel containing from 0.2 wt % to 0.9 wt % of carbon, from 0.1 wt % and 2.0 wt % of manganese, from 0.2 wt % to 2.0 wt % of chromium, from 0.3 to 4.5 wt % of nickel, from 0.1 wt % to 1.0 wt % of molybdenum, from 01.0 wt % to 2.0 wt % of silicone and no more that about 0.01 wt % of boron while the rest is formed by iron and other accompanying elements and usual impurities.