Paper Title:

Development of Tungsten Heavy Alloy with Hybrid Structure for Kinetic Energy Penetrator

Periodical Materials Science Forum (Volumes 534 - 536)
Main Theme Progress in Powder Metallurgy
Edited by Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim
Pages 1249-1252
DOI 10.4028/www.scientific.net/MSF.534-536.1249
Citation Woon Hyung Baek et al., 2007, Materials Science Forum, 534-536, 1249
Online since January, 2007
Authors Woon Hyung Baek, Eun Pyo Kim, Heung Sub Song, Moon Hee Hong, Seong Lee, Young Moo Kim, Sung Ho Lee, Joon Woong Noh, Joo Ha Ryu
Keywords Hybrid Structure, Penetrator, Tungsten Heavy Alloy
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Abstract

A new tungsten heavy alloy with hybrid structure was manufactured for the kinetic energy penetrator. The tungsten heavy alloy is composed of two parts: core region is molybdenum added heavy alloy to promote the self-sharpening; outer part encompassing the core is conventional heavy alloy to sustain severe load in a muzzle during firing. The fracture surfaces of the specimen is observed after ballistic tests. The core region revealed brittle behavior with W/W inter-granular fracture which activates self-sharpening. On the other hand, outer part exhibited conventional ductile fracture mode. From ballistic test, it was found that the penetration performance of the hybrid structure tungsten heavy alloy is higher than that of conventional heavy alloy. This heavy alloy is thought to be very useful for the penetrator in the near future.