PENETRATION PERFORMANCE OF ULTRAFINE-GRAINED COPPER SHAPED CHARGE LINER

摘要

It is known that the fine grain size of a copper shaped charge liner improves penetration performance. To obtain fine microstructure in copper, recrystallization after plastic deformation is usually used. In this study, ultrafine grain of copper was obtained by a severe plastic deformation technique called equal channel angular pressing (ECAP). Conical liners were fabricated from ECAP processed billets. Mechanical properties and penetration performances of ultrafine-grained copper shaped charge liners have been compared with those of conventionally forged and recrystallized ones.