Effect of Graphite Addition on Mechanical Properties and Elevated Temperature Tribological Behaviour of Aluminium Zinc Alloy

Ritapure, Parmeshwar P.; Kharde, Y. R.

doi:10.2139/ssrn.3332400

Cited by 2 publications

(5 citation statements)

References 24 publications

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“…Least porosity and more strength is noticed for the material having 10 wt.% of SiC indicates outstanding bonding strength and chemical solubility among SiC, graphite and matrix alloy. However strength and solubility decreases with further addition of SiC [26][27][28][29]45].…”

Section: Tensile Strengthmentioning

confidence: 99%

“…However the hardness decreases slightly with further addition of SiC particles from 20 wt.% to 30 wt.%. This reduction in hardness may be due to the softness of graphite, as the graphite particulate being softer, hence does not act as obstacles to movement of displacements within the matrix [26][27][28][29]45] and reduction in strength and solubility decreases with further addition of SiC.…”

Section: Hardnessmentioning

confidence: 99%

“…Black layer over all the worn surfaces confirms the formation of black graphite solid film (Figs. 6a-6d) [26][27][28][29]45].…”

Section: Surface Morphologymentioning

confidence: 99%

“…The rise in strength and drop in hardness by substantial amount is noticed with increase of graphite reinforcement from 0 % to 5 % in a step of 1 wt.%. However, the highest wear resistance is noticed for the materials with 3 wt.% of graphite [45]. Hence fixed 3 wt.% of graphite was selected as reinforcement into matrix alloy.…”

Section: Introductionmentioning

confidence: 99%

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Study of Mechanical and Sliding Wear Behavior of Al-25Zn alloy/SiC/Graphite Novel Hybrid Composites for Plain Bearing Application

Ritapure¹,

Kharde²

2019

Tribol. Ind.

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In this investigations, sliding wear performance of Al-25Zn based novel hybrid composites added with fixed weight percentage of graphite (3 wt.%) and varying weight percentage of silicon carbide (10, 20 and 30 wt.%) was investigated for various process factors such as specimen temperature, applied load, sliding speed and sliding distance using a pin on disc with EN24 disc as per Taguchi L16 array. For similar test conditions, the composite with 10 wt.% of silicon carbide shows the highest wear resistance and tensile strength; whereas the composite with 20 wt.% of SiC shows highest hardness. The specimen temperature is recognized as the dominating parameter for the sliding wear performance of the materials. Artificial Neural network and Regression model developed was found competent for the forecasting of wear performance. Confirmation experiment conducted with the optimum parameter combination also confirmed the accuracy of developed model. The observed wear mechanism is abrasion and adhesion. The major mechanisms of abrasive wear are recognized as ploughing, micro cutting and delamination.

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Section: Tensile Strengthmentioning

confidence: 99%

Section: Hardnessmentioning

confidence: 99%

“…Black layer over all the worn surfaces confirms the formation of black graphite solid film (Figs. 6a-6d) [26][27][28][29]45].…”

Section: Surface Morphologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study of Mechanical and Sliding Wear Behavior of Al-25Zn alloy/SiC/Graphite Novel Hybrid Composites for Plain Bearing Application

Ritapure¹,

Kharde²

2019

Tribol. Ind.

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“…However, it's worth noting that the composite with 3 wt-% graphite has the maximum wear resistance, impact strength and lowest coefficient of friction (COF) for an equivalent test setting. It demonstrates that the best amount of graphite to add to the matrix alloy is around 3 wt-% graphite [22].…”

Section: Introductionmentioning

confidence: 99%

Optimization of dry sliding wear characteristics of Al–25Zn/SiC hybrid composites by graphite reinforcement using artificial neural network and Taguchi’s method

Ritapure¹,

Damale

Kharde

2021

Tribology - Materials, Surfaces & Interfaces

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This paper proposes a unique Al25Zn/SiC/Graphite hybrid composite for plain bearing and other wear-resistant applications. Newly synthesized composites of Al-25Zn alloy reinforced with 3 wt-% graphite and 10, 15 and 20 wt-% SiC are tested using a pin on the disc tribometer following ASTM G-99 standard against EN24 disc. Sliding wear studies using the Taguchi L 16 array are carried out for a set of parameters including pin temperature, speed, load and a constant sliding distance. The results reveal that adding 3 wt-% graphite into Al25Zn/SiC composites greatly enhances wear resistance, tensile strength, impact strength and ductility at the expense of hardness. The wear behaviour of the composites is predicted using an artificial neural network and a regression model. Adhesion is found the most common wear mechanism in matrix alloys, while abrasion and delamination in composites. Among the examined materials, the composite with 3 wt-% graphite and 15 wt-% SiC has the optimum combination of characteristics.

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Effect of Graphite Addition on Mechanical Properties and Elevated Temperature Tribological Behaviour of Aluminium Zinc Alloy

Cited by 2 publications

References 24 publications

Study of Mechanical and Sliding Wear Behavior of Al-25Zn alloy/SiC/Graphite Novel Hybrid Composites for Plain Bearing Application

Study of Mechanical and Sliding Wear Behavior of Al-25Zn alloy/SiC/Graphite Novel Hybrid Composites for Plain Bearing Application

Optimization of dry sliding wear characteristics of Al–25Zn/SiC hybrid composites by graphite reinforcement using artificial neural network and Taguchi’s method

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