PSI - Issue 72

Dharmik Chauhan et al. / Procedia Structural Integrity 72 (2025) 529–537

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2.1. Material

The FGAM specimens has been prepared using the Al 6061 alloy as the matrix and the boron carbide (B 4 C) and molybdenum disulfide (MoS 2 ) particles as reinforcement. The FGAM is made through the stir casting machine. The chemical composition of the aluminum alloy 6061 is shown in Table 1.

Table 1 chemical composition of the aluminum alloy 6061 Elements Cu Mg Si Fe

Mn

Zn

Ti

Cr

Al

Standard (wt.%) Ingot analysis (wt.%)

0.15-0.40 0.8-1.2

0.40-0.8 ≤ 0.7

≤0.15

≤0.25

≤0.15

0.04-0.35 Remainder

0.21

0.91

0.66

0.31

0.078

0.084

0.013

0.078

Remainder

2.2. Experimental Design

In this experiment Box-Behnken design used to evaluate the wear loss for the functionally graded aluminum composites. An EN-31 steel disc with a hardness grade of 65 HRC is used as a material resistance to indentation. American Society for Testing and Material G99-04 Standards (Andrade et al., 2016; Jiang et al., 2015; Jiménez et al., 2006; Radhika et al., 2018; Souza et al., 2019) were adopted for preparing the experiment specimens. In Figure 1 shows the diagram of pin-on-disc tribometer with pin heating module. The dimensions of the cylindrical wear specimens taken for the experiment is 6 mm height and 6 mm diameter. In this experiment, track diameter of 40 mm was used. According to Box-Behnken design 15 test runs in this experiment. In experiment three parameter with their different level likes as normal load (10 N, 25 N, 40 N), sliding speed (0.5 m/s, 1.25 m/s, 2.0 m/s) and temperature (50 ℃, 125 ℃, 200 ℃ ) shows in Table 2 (Arivendan et al., 2025; Dhanalakshmi et al., 2018; Kiran et al., 2014; A. Kumar et al., 2024).

Figure 1 Pin-on disc tribometer pin heating module

Table 2 Pin-on-disc parameter and levels Sr.No. Parameter

Level Level 1

Level 2

Level 3

Normal load (N) Sliding speed (m/s) Temperature (℃)

10

25

40

0.5

1.25 125

2.0

50

200