Investigations on microstructure, hardness and tribological behaviour of AA7075-Al2O3 composites synthesized via stir casting route
Aluminium matrix composite (AMC) materials play an important role in the field of automobile and aerospace industries due to their excellent properties. In this research, aluminium alloy (AA7075) was reinforced with alumina (Al2O3) particles to improve their hardness and tribological behaviour of t...
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2023-12-01
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| Series: | Revista de Metalurgia |
| Subjects: | |
| Online Access: | https://revistademetalurgia.revistas.csic.es/index.php/revistademetalurgia/article/view/1578 |
| _version_ | 1797340286594056192 |
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| author | Mathusoothana Perumal Ezhilan Loganathan Emmanual Sivasamy Alagarsamy Meiyanathan Meignanamoorthy |
| author_facet | Mathusoothana Perumal Ezhilan Loganathan Emmanual Sivasamy Alagarsamy Meiyanathan Meignanamoorthy |
| author_sort | Mathusoothana Perumal Ezhilan |
| collection | DOAJ |
| description |
Aluminium matrix composite (AMC) materials play an important role in the field of automobile and aerospace industries due to their excellent properties. In this research, aluminium alloy (AA7075) was reinforced with alumina (Al2O3) particles to improve their hardness and tribological behaviour of the base alloy. Four composites were prepared by varying the content (4, 8 and 12 wt.%) of Al2O3 particles through the stir casting technique. The surface morphology of the proposed composites ensured the uniform distribution of Al2O3 particles into the matrix alloy. The hardness of the composite was measured using a Brinell hardness tester and the maximum value of hardness was found in the AA7075 - 8 wt.% Al2O3 composite. Hence, a tribological investigation was carried out on this AA7075 - 8 wt.% Al2O3 composite. Load (P), sliding speed (V) and sliding velocity (D) were taken as the wear parameters for conducting the experiments. A Technique for Order Preference by Similarity to Ideal Preferred Solution (TOPSIS) approach has been applied to find out the optimal conditions of parameters to obtain the lowest wear rate (WR) and the co-efficient of friction (COF). The results showed that the lowest WR and COF was obtained at ‘P’ of 15 N, ‘V’ of 1 m•s-1 and ‘D’ of 1000 m•s-1. ANOVA results revealed that ‘P’ is the factor with the most significant contribution (38.36%), followed by ‘D’ (28.32%). The worn surface morphology of the confirmation experiment specimen was investigated by SEM and the wear mechanism was reported.
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| first_indexed | 2024-03-08T09:59:48Z |
| format | Article |
| id | doaj.art-5f8b2246155b48e5839e4a59ccdfc59e |
| institution | Directory Open Access Journal |
| issn | 0034-8570 1988-4222 |
| language | English |
| last_indexed | 2024-03-08T09:59:48Z |
| publishDate | 2023-12-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Revista de Metalurgia |
| spelling | doaj.art-5f8b2246155b48e5839e4a59ccdfc59e2024-01-29T12:31:47ZengConsejo Superior de Investigaciones CientíficasRevista de Metalurgia0034-85701988-42222023-12-0159410.3989/revmetalm.253Investigations on microstructure, hardness and tribological behaviour of AA7075-Al2O3 composites synthesized via stir casting routeMathusoothana Perumal Ezhilan0Loganathan Emmanual1Sivasamy Alagarsamy2Meiyanathan Meignanamoorthy3Department of Mechanical Engineering, Rohini College of Engineering and TechnologyDepartment of Mechanical Engineering, M. Kumarasamy College of EngineeringDepartment of Mechanical Engineering, Mahath Amma Institute of Engineering and TechnologyDepartment of Mechanical Engineering, Chendhuran College of Engineering and Technology Aluminium matrix composite (AMC) materials play an important role in the field of automobile and aerospace industries due to their excellent properties. In this research, aluminium alloy (AA7075) was reinforced with alumina (Al2O3) particles to improve their hardness and tribological behaviour of the base alloy. Four composites were prepared by varying the content (4, 8 and 12 wt.%) of Al2O3 particles through the stir casting technique. The surface morphology of the proposed composites ensured the uniform distribution of Al2O3 particles into the matrix alloy. The hardness of the composite was measured using a Brinell hardness tester and the maximum value of hardness was found in the AA7075 - 8 wt.% Al2O3 composite. Hence, a tribological investigation was carried out on this AA7075 - 8 wt.% Al2O3 composite. Load (P), sliding speed (V) and sliding velocity (D) were taken as the wear parameters for conducting the experiments. A Technique for Order Preference by Similarity to Ideal Preferred Solution (TOPSIS) approach has been applied to find out the optimal conditions of parameters to obtain the lowest wear rate (WR) and the co-efficient of friction (COF). The results showed that the lowest WR and COF was obtained at ‘P’ of 15 N, ‘V’ of 1 m•s-1 and ‘D’ of 1000 m•s-1. ANOVA results revealed that ‘P’ is the factor with the most significant contribution (38.36%), followed by ‘D’ (28.32%). The worn surface morphology of the confirmation experiment specimen was investigated by SEM and the wear mechanism was reported. https://revistademetalurgia.revistas.csic.es/index.php/revistademetalurgia/article/view/1578AA7075Al2O3CompositesHardnessStir castingTOPSIS approach |
| spellingShingle | Mathusoothana Perumal Ezhilan Loganathan Emmanual Sivasamy Alagarsamy Meiyanathan Meignanamoorthy Investigations on microstructure, hardness and tribological behaviour of AA7075-Al2O3 composites synthesized via stir casting route Revista de Metalurgia AA7075 Al2O3 Composites Hardness Stir casting TOPSIS approach |
| title | Investigations on microstructure, hardness and tribological behaviour of AA7075-Al2O3 composites synthesized via stir casting route |
| title_full | Investigations on microstructure, hardness and tribological behaviour of AA7075-Al2O3 composites synthesized via stir casting route |
| title_fullStr | Investigations on microstructure, hardness and tribological behaviour of AA7075-Al2O3 composites synthesized via stir casting route |
| title_full_unstemmed | Investigations on microstructure, hardness and tribological behaviour of AA7075-Al2O3 composites synthesized via stir casting route |
| title_short | Investigations on microstructure, hardness and tribological behaviour of AA7075-Al2O3 composites synthesized via stir casting route |
| title_sort | investigations on microstructure hardness and tribological behaviour of aa7075 al2o3 composites synthesized via stir casting route |
| topic | AA7075 Al2O3 Composites Hardness Stir casting TOPSIS approach |
| url | https://revistademetalurgia.revistas.csic.es/index.php/revistademetalurgia/article/view/1578 |
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