Issue 74

N. S. Dhongade et alii, Fracture and Structural integrity, 74 (2025) 1-19; DOI: 10.3221/IGF-ESIS.74.01

Fig. 11 presents the elemental distribution maps obtained via scanning electron microscopy (SEM) for the AA7075/5 wt.% TiB 2 /4 wt.% ZrO 2 hybrid composite. The elemental mapping elucidates the spatial dispersion of constituent elements within the composite microstructure. Predominantly, aluminum (Al) forms the matrix, while zinc (Zn) is observed as the principal alloying element. The ceramic reinforcements, represented by titanium (Ti), zirconium (Zr), and boron (B), exhibit a homogenous distribution throughout the matrix without notable agglomeration. This uniform dispersion of reinforcements is critical, as it correlates strongly with enhanced load transfer efficiency and resultant mechanical property improvements, including strength and wear resistance [15, 4].

Figure 11: The EDX elemental mapping of AA7075/5%TiB 2 /4%ZrO 2 .

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