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Microstructural observations on the terminal penetration of long rod projectile

Defence Technology. 2017;13(6):413-421 DOI 10.1016/j.dt.2017.05.013

 

Journal Homepage

Journal Title: Defence Technology

ISSN: 2214-9147 (Online)

Publisher: Elsevier

Society/Institution: China Ordnance Society

LCC Subject Category: Military Science

Country of publisher: Netherlands

Language of fulltext: English

Full-text formats available: PDF, HTML

 

AUTHORS


Krushna Kumbhar

P. Ponguru Senthil

A.K. Gogia

EDITORIAL INFORMATION

Blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 22 weeks

 

Abstract | Full Text

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.