Issue 71

K. Annapoorna et alii, Frattura ed Integrità Strutturale, 71 (2025) 285-301; DOI: 10.3221/IGF-ESIS.71.21

Specific wear rate (x 10-4)

Al6061- 1wt% Al 2 O 3 0.5wt% ZrO 2

Al6061- 1wt% Al 2 O 3 0.75wt% ZrO 2

Al6061- 1wt% Al 2 O 3 1wt% ZrO2

Al6061- 1wt% Al 2 O 3 1.25wt% ZrO 2

Al6061- 0.5wt% Al 2 O 3 1wt% ZrO 2

Al6061- 0.75wt% Al 2 O 3 1wt% ZrO 2

Al6061- 1.25wt% Al 2 O 3 1wt% ZrO 2

Load (N)

As Cast Al6061

10 20 30 40

4.58 5.64 6.45 7.70

3.62 4.45 5.25 6.17

3.08 3.86 4.37 5.06

2.40 2.85 3.45 4.01

2.56 3.25 3.80 4.39

4.02 4.95 5.89 6.89

3.36 3.99 4.80 5.72

2.75 3.52 4.06 4.62

Table 7: Produced Composites specific wear rate at 4.0 m/sec as a sliding velocity , 4000m as a sliding distance with varying load.

Figure 22: Specific wear rate of composites under different loads at 4.0m/s and 4000m distance

Specific wear rate, (x 10-4)

Al6061- 1wt% Al 2 O 3 0.5wt% ZrO 2

Al6061- 1wt% Al 2 O 3 0.75wt %ZrO 2

Al6061- 1wt% Al 2 O 3 1wt% ZrO 2

Al6061- 1wt% Al 2 O 3 1.25wt% ZrO 2

Al6061- 0.5wt% Al 2 O 3 1wt% ZrO 2

Al6061- 0.75wt% Al 2 O 3 1wt% ZrO 2

Al6061- 1.25wt% Al 2 O 3 1wt% ZrO 2

Velocity (m/s)

As Cast Al6061

1 2 3 4

5.09 5.96 6.92 7.70

3.94 4.64 5.38 6.17

3.37 3.96 4.61 5.06

2.60 3.11 3.65 4.01

2.79 3.36 3.83 4.39

4.55 5.30 6.22 6.89

3.63 4.33 5.00 5.72

3.00 3.62 4.09 4.62

Table 8: Produced Composites specific wear rate at 40N as a load, 4000m as a sliding distance with varying sliding velocity.

Wear Characteristics - Effect of variable speed Tab. 8 presents the exact wear rate values as a function of varying speed, while maintaining constant load and sliding distance. In this experiment, velocities were adjusted to 1 m/s, 2 m/s, 3 m/s, and 4 m/s, while maintaining a constant weight of 40 N and a sliding distance of 4000 meters. Fig. 23 illustrates the correlation between wear rate and varying speeds. The figure illustrates that an increase in speed results in a higher wear rate. As velocity escalates, the resultant frictional heat elevates the surface temperature, subsequently causing material softening, which exacerbates damage and further amplifies the wear rate. The maximum wear rate is seen in the as-cast Al6061 alloy. Al6061 reinforced with 1 wt.

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