The shock response of a cemented tungsten carbide
conference paper
WC-Co has been used for a number of years in the manufacture of AP rounds. Consequently there is a requirement to understand its dynamic
properties. The dynamic behaviour of G13 WC-Co discs manufactured by Kennametal Engineered Products B.V. was studied using the plate impact technique. Manganin (piezo-resistive strain) gauges were used to interrogate the stress in the G13 WC-Co discs subjected to shock. Scanning electron microscopy (SEM) was used to confirm that the WC-Co material closely resembled the microstructure of the core of an existing 7.62mm AP projectile. Flyer-plate impact results are presented and used to derive several key dynamic properties of G13 WC-Co, principally: (1) a shock velocity – particle velocity relationship; (2) the HEL – determined to be 3.0±0.16GPa, and; (3) the spall strength, estimated to be 3.98GPa. An apparent hardening behaviour leading to a ramped rise to the Hugoniot stress was observed and results compared to the literature.
properties. The dynamic behaviour of G13 WC-Co discs manufactured by Kennametal Engineered Products B.V. was studied using the plate impact technique. Manganin (piezo-resistive strain) gauges were used to interrogate the stress in the G13 WC-Co discs subjected to shock. Scanning electron microscopy (SEM) was used to confirm that the WC-Co material closely resembled the microstructure of the core of an existing 7.62mm AP projectile. Flyer-plate impact results are presented and used to derive several key dynamic properties of G13 WC-Co, principally: (1) a shock velocity – particle velocity relationship; (2) the HEL – determined to be 3.0±0.16GPa, and; (3) the spall strength, estimated to be 3.98GPa. An apparent hardening behaviour leading to a ramped rise to the Hugoniot stress was observed and results compared to the literature.
TNO Identifier
183190
Source title
24th International Symposium on Ballistics, New Orleans, LA, USA, 22-26 September 2008
Pages
8 p.
Files
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