文章基本信息

标题：Microstructural observations on the terminal penetration of long rod projectile
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作者：Krushna Kumbhar ; P. Ponguru Senthil ; A.K. Gogia 等
期刊名称：Defence Technology
印刷版ISSN：2214-9147
出版年度：2017
卷号：13
期号：6
页码：413-421
DOI：10.1016/j.dt.2017.05.013
出版社：Elsevier B.V.
摘要：Present study focuses on the terminal penetration of tungsten heavy alloy (WHA) long rod penetrator impacted against armour steel at an impact velocity of 1600 m/s. The residual penetrator and armour steel target recovered after the ballistic test have been characterized using optical microscope, scanning electron microscope (SEM) and electron probe micro analyzer (EPMA). Metallurgical changes in target steel and WHA remnant have been analysed. Large shear stresses and shear localization have resulted in local failure and formation of erosion products. Severe plastic deformation acts as precursor for formation of adiabatic shear band (ASB) induced cracks in target steel. Recovered WHA penetrator remnant also exhibits severe plastic deformation forming localized shear bands, ASB induced cracks and shock induced cracks.
关键词：Long rod projectile ; Terminal penetration ; Shear localization ; Adiabatic shear band ; Tungsten heavy alloy ; Armour steel