Influence of mechanical alloying process on structural, mechanical and tribological behaviours of CNT reinforced aluminium composites – a statistical analysis

The mechanical and tribological properties of the Al/CNT composites could be controlled and improved by the method of its fabrication process. This research article deals with the optimization of mechanical and tribological properties of Al/CNT composites, which are fabricated using the mechanical a...

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Bibliographic Details
Published in:Bulletin of the Polish Academy of Sciences. Technical sciences 2021-04, Vol.69 (2), p.136745-136745
Main Authors: Manikandan, P., Elayaperumal, A., Franklin Issac, R.
Format: Article
Language:English
Subjects:
Abrasive wear
Adhesive wear
Aluminum
Coefficient of friction
Composite materials
composites
Compressive strength
Mechanical alloying
Mechanical properties
morphology
Optimization
powder metallurgy
Process parameters
Reinforcement
Response surface methodology
Stainless steels
Statistical analysis
Tribology
wear
Wear mechanisms
Wear rate
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Summary:The mechanical and tribological properties of the Al/CNT composites could be controlled and improved by the method of its fabrication process. This research article deals with the optimization of mechanical and tribological properties of Al/CNT composites, which are fabricated using the mechanical alloying process with the different weight percentage of multi-walled CNT reinforcement. The phase change and the presence of CNT are identified using the X-Ray Diffraction (XRD) analysis. The influence of mechanical alloying process and the multi-walled CNT reinforcement on the mechanical, and tribological behaviours of the Al/CNT composites are studied. The optimal mechanical alloying process parameters and the weight percentage of multi-walled CNT reinforcement for the Al/CNT composite are identified using the Response Surface Methodology (RSM), which exhibits the better hardness, compressive strength, wear rate and Coefficient of Friction (CoF). The Al/CNT composite with 1.1 wt.% of CNT has achieved the optimal responses at the milling speed 301 rpm and milling time 492 minutes with the ball to powder weight ratio 9.7:1, which is 98% equal to the experimental result. This research also reveals that the adhesive wear is the dominant wear mechanism for the Al/CNT composite against EN31 stainless steel but the optimal Al/CNT composite with 1.1 wt.% of multi-walled CNT has experienced a mild abrasive wear.
ISSN:2300-1917
0239-7528
2300-1917
DOI:10.24425/bpasts.2021.136745