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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.12 [2005] >
IJEMS Vol.12(3) [June 2005] >
| Title: | Ballistic impact testing of AA2219 aluminium alloy welded plates and their metallurgical characterisation |
| Authors: | Jha, Abhay K
Shiresha, Naga
Murty, S V S N
Diwakar, V
SreeKumar, K |
| Issue Date: | Jun-2005 |
| Publisher: | CSIR |
| IPC Code: | C22C 21/00 |
| Abstract: | Ballistic impact experiments were conducted on 6.4 mm and 7.8
mm thick aluminium alloy AA 2219 sheets using cylindrical ballistic projectiles
made of hard steel. The impact velocities varied between 380 ms-1
and 890 ms-1 and flash infra red technique was used to determine
projectile velocity and to assure the normality of impact. The microstructural
damage associated with impact was analyzed by optical and scanning electron
microscopy (SEM). The microstructure consisted of adiabatic shear bands formed
in an extremely short time by the combined effects of the highly localized
shear deformation and the high temperature rise that occurred within the shear
bands. Scanning electron microscopy revealed features of typical melting within
the band. |
| Page(s): | 221-226 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.12(3) [June 2005]
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