Dynamic recrystallization in detonating tantalum shaped charges: A mechanisms for extreme plastic deformation

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · Materials Characterization; (United States)

DOI:https://doi.org/10.1016/1044-5803(94)90060-4· OSTI ID:7168003

Murr, L E; Shih, H K; Niou, C S ^[1]

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1. Univ. of Texas, El Paso, TX (United States)

Lined cavity explosive charges, especially conical metal liners that are collapsed by a high explosive, have been extremely important as the basis for armor penetrators in weapons systems worldwide. In a systematic examination and comparison of two different tantalum starting liner cones and corresponding recovered slugs and jet fragments for detonated shaped charges, using light and transmission electron microscopy observations, the slug and jet grain sizes were reduced from the liners by nearly a factor of 100. The slug and jet cross sections exhibited different concentric zones of varying grain and substructures, and these also varied with a difference in the starting liner cone grain structure. These observations provide unambiguous evidence for dynamic recrystallization as a prominent mechanisms for deformation in the detonating shaped charge.

• OSTI ID: 7168003
• Journal Information: Materials Characterization; (United States), Journal Name: Materials Characterization; (United States) Vol. 33:1; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
42 ENGINEERING
422000 -- Engineering-- Mining & Underground Engineering-- (1980-)
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450100 -- Military Technology
Weaponry
& National Defense-- Chemical Explosions & Explosives
CHEMICAL EXPLOSIVES
DATA
DEFORMATION
ELEMENTS
EXPERIMENTAL DATA
EXPLOSIVES
INFORMATION
METALS
MICROSTRUCTURE
NUMERICAL DATA
RECRYSTALLIZATION
SHAPED CHARGES
TANTALUM
TRANSITION ELEMENTS