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. 2017 Aug 7;3(8):e00375.
doi: 10.1016/j.heliyon.2017.e00375. eCollection 2017 Aug.

Wear behavior of Al-7%Si-0.3%Mg/melon shell ash particulate composites

M Abdulwahab  1 , R M Dodo  1 , I Y Suleiman  2 , A I Gebi  1 , I Umar  1
Affiliations

Wear behavior of Al-7%Si-0.3%Mg/melon shell ash particulate composites

M Abdulwahab et al. Heliyon. .

Abstract

The present study examined wear characteristics of A356/melon shell ash particulate composites. Dry-sliding the stainless steel ball against specimen disc revealed the abrasive wear behavior of the composites under loads of 2 and 5N. The composite showed lower wear rate of 2.182 × 10-4 mm3/Nm at 20 wt% reinforced material under load of 5N. Results showed that wear rate decreased significantly with increasing weight percentage of melon shell ash particles. Microstructural analyses of worn surfaces of the composites reveal evidence of plastic deformation of matrix phase. The wear resistance of A356 increased considerably with percentage reinforcement. In other words, the abrasive mass loss decreased with increasing percentage of reinforcement addition at the both applied loads. The control sample suffered a highest mass loss at 5 N applied load.

Keywords: Materials science; Mechanical engineering.

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Figures

Fig. 1
Fig. 1
Photo of the melon shell.
Fig. 2
Fig. 2
Photo of melon shell ash.
Fig. 3
Fig. 3
Variation of wear rate with percentage reinforcement of melon shell ash particules in Al-7Si-0.3Mg at different applied loads.
Fig. 4
Fig. 4
Variation of weight loss with percentage reinforcement of the melon shell ash particles in Al-7Si-0.3Mg at different applied loads.
Fig. 5
Fig. 5
Optical micrograph of the Al-7% Si-0.3% Mg alloy at the applied load of (a) 2 N (b) 5N.
Fig. 6
Fig. 6
Optical micrograph of the Al-7% Si-0.3% Mg alloy reinforced with 5wt%melon shell ash particles at applied load of (a) 2 N (b) 5N.
Fig. 7
Fig. 7
Optical micrograph of the Al-7% Si-0.3% Mg alloy reinforced with 10 wt% melon shell ash particles at applied load of (a) 2 N (b) 5N.
Fig. 8
Fig. 8
Optical micrograph of the Al-7% Si-0.3% Mg alloy reinforced with 15 wt% melon shell ash particles at applied load of (a)2 N (b) 5N.
Fig. 9
Fig. 9
Optical micrograph of the Al-7% Si-0.3% Mg alloy reinforced with 20 wt% melon shell ash particles at applied load of (a) 2 N (b) 5N.
Fig. 10
Fig. 10
SEM image of Al-7%Si-0.3%Mg alloy (a) at applied load of 2 N (b) reinforced with 20 wt% melon shell ash particles at applied load of 5N.
Fig. 11
Fig. 11
SEM image of the melon shell ash at different magnifications.
See this image and copyright information in PMC

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