Fragmentation device
AssigneeThe United States of America as represented by the Secretary of the Army
InventorsCharles E. Sallade, James D. Nicolo
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Abstract
A high explosive device with improved fragmentation is provided with a wall of wrought steel having a ferrite-martensite microstructure. This is obtained by heating in a temperature range in the ferrite-austenite region of the iron-carbon phase diagram until equilibrium is established between the two phases, and then quenching to retain the ferrite and transform the austenitic phase to martensite for said microstructure.
Claims1
A high explosive device of the projectile type having a wall of wrought steel of hypoeutectoid composition consisting exclusively of a discontinuous, balanced ferrite-untempered martensite microstructure for improved fragmentation effects.
Dependencies are inferred from the claim text.