According to the literature, the new tungsten alloy ball can be used as a good high-speed impact body for cluster bomb (a canister of small individual bombs that is dropped from an aircraft) to improve its killing power. In the past, most of the cluster bombs used steel balls and lead balls, which have main disadvantage - lighter in weight, so that they are less powerful for weapons.
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In order to further improve the killing power of the cluster bomb, it is necessary to increase the specific gravity, dimensional accuracy, performance and dimensional stability of the impact body. Tungsten alloy has the advantages of large specific gravity, high strength, good toughness, etc., so it is often used to manufacture the impact body of the submunition. Because this new tungsten alloy ball also adds rare earth elements, it prevents the growth of tungsten grains, makes them spheroidized and refined. At the same time, it hinders the diffusion process of oxygen atoms in the alloy. Therefore, the oxidation resistance and corrosion resistance of the obtained tungsten alloy balls are also improved.
