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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.17 [2010] >
IJEMS Vol.17(1) [February 2010] >
| Title: | Metallurgical analysis of burst tested aluminium alloy AA 2219 miniature assembly |
| Authors: | Jha, Abhay K
Diwakar, V
Sreekumar, K |
| Keywords: | Adiabatic shear band
Deformation under high strain rate
Fracture
Burst test
AA 2219 |
| Issue Date: | Feb-2010 |
| Publisher: | CSIR |
| Abstract: | A miniature assembly fabricated from
aluminium alloy AA 2219 forging and 2.0 mm thick sheets is subjected to burst
test using a pressure cartridge at very high strain rate of loading. The
microstructural features associated with deformation at high rate of loading
using explosive energy is analyzed by optical and scanning electron microscopy
(SEM). The microstructures 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 melting within the adiabatic
shear band. This paper highlights the details of experiment carried out and the
salient observations at microscopic level on the fracture surfaces taken from
the test article. |
| Page(s): | 67-71 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.17(1) [February 2010]
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