Issue 73

M. Ravikumar, Fracture and Structural Integrity, 73 (2025) 219-235; DOI: 10.3221/IGF-ESIS.73.15

Energy Dispersive spectrum (EDS) Analysis EDS provides qualitative and semi-quantitative information on the composition of a sample and is especially helpful for identifying materials on its surface. Fig. 13 (a) displays the aluminum alloy's EDS spectrum. It suggests the existence of a substantial amount of aluminum together with elements like Zn, Mg, Fe, Mn, and Cu. Fig. 13(b) displays the EDS spectra of a nano composite sample that contains 3% nanosized B 4 C. In addition to Al and Zn, it is seen that the Al-7075 alloy matrix includes nano B 4 C particulates in the form of B and C constituents [25].

(a)

(b) Figure 13: EDS spectrums of (a) base alloy (Al7075) and (b) Al7075-3 wt. % n-B 4 C composites.

C ONCLUSIONS  Stir casting has been shown to be a successful technique for fabricating Al7075 alloy composites reinforced with 1%–3% nanosized B 4 C particles.  The findings of the microstructural studies showed that the nanosized B 4 C was uniformly distributed throughout the aluminum matrix.  The hardness increases with 9.30 % for C2, 16.12 % for C3 and 17.89 % for C4 composites when compared to the pure aluminium alloy.

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