Microstructural analysis of residual projectiles—A new method to explain penetration mechanisms |
| |
Authors: | Uwe Gerlach |
| |
Affiliation: | (1) Wegmann & Co., GmbH Company, D-3500 Kassel, August-Bode-Str., West Germany |
| |
Abstract: | In the present work it is shown that metallographic analysis can supply a lot of detailed information about metallurgical
events which happen during the penetration of metallic projectiles into armor steel. With the help of these findings models
of penetration processes are derived. The deformation, fracture, and phase transformation processes of projectiles are investigated,
which consist of tungsten, a tool steel, and a tungsten heavy metal, respectively. These were shot into armor steel at velocities
between 1000m/s and 2000 m/s. The extensively deformed tungsten and the brittle steel form two opposite poles; between those
the heavy metal takes a mid position. The more ductile a material is, the sooner its penetration approaches the piercing of
a liquid jet. On the other hand, in a brittle material quick rupture is followed by turbulent motion and friction welding
of the fragments. In this case extensive deformation is observed only in the skin layer of a fragment and in shear bands.
Special attention is drawn to features which are characteristic for ballistic piercing processes,e.g., molten films and adiabatic shear deformation.
Formerly Research Scientist at the Hochschule der Bundeswehr in Hamburg, West Germany, and thereafter at an institute in France
doing military research |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|