Taguchi optimized wear and self-lubricating properties of Al-alloy composite reinforced with hybrid B4C–MoS2 particulates
We investigated self-lubricating Al–Mg–Si hybrid metal matrix composites (HMMCs) embedded with MoS2–B4C particulates, for use in automotive engine components. Composites with different B4C content (x = 3.5, 7.0, 10.5, 14.0, and 17 wt%) were prepared, with the MoS2 content of 3.0 wt%. The metal matri...
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Elsevier
2024-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424000061 |
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| author | Neeraj Kumar Ashutosh Sharma M.K. Manoj Byungmin Ahn |
| author_facet | Neeraj Kumar Ashutosh Sharma M.K. Manoj Byungmin Ahn |
| author_sort | Neeraj Kumar |
| collection | DOAJ |
| description | We investigated self-lubricating Al–Mg–Si hybrid metal matrix composites (HMMCs) embedded with MoS2–B4C particulates, for use in automotive engine components. Composites with different B4C content (x = 3.5, 7.0, 10.5, 14.0, and 17 wt%) were prepared, with the MoS2 content of 3.0 wt%. The metal matrix composites were processed using the powder metallurgy route comprising milling for 2 h and cold pressing and consolidation at a sintering temperature of 560 °C. Their dry sliding wear behavior was examined at applied loads (20–50 N) and sliding distances (1–3 km), and the wear variables were optimized using the Taguchi model (L9). Microstructural analysis was performed using a scanning electron microscope equipped with an energy dispersive spectrometer. A homogeneous particle distribution was observed in the HMMCs, without any appreciable instance of agglomerates. The wear resistance and friction coefficient (COF) improved when MoS2 was incorporated into the HMMCs, compared with a matrix alloy under the same operating conditions. In particular, the COF fluctuated up to a sliding distance of 250 m and was constant for larger values. The wear rate depends on not only the maximum hardness but also the appreciation of self-lubricant MoS2. The Taguchi findings showed that the fraction of hybrid reinforcement had the strongest effect on the wear resistance, and it was followed by the applied load, sliding distance, and track diameter. Apart from providing self-lubrication, the MoS2 particles reduced the wear rate. |
| first_indexed | 2024-03-08T09:27:57Z |
| format | Article |
| id | doaj.art-84944f7fa2ef4fb68ea8688a2f794b47 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-08T09:27:57Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-84944f7fa2ef4fb68ea8688a2f794b472024-01-31T05:44:28ZengElsevierJournal of Materials Research and Technology2238-78542024-01-012841424151Taguchi optimized wear and self-lubricating properties of Al-alloy composite reinforced with hybrid B4C–MoS2 particulatesNeeraj Kumar0Ashutosh Sharma1M.K. Manoj2Byungmin Ahn3Department of Metallurgical and Materials Engineering, NIT Raipur, Raipur, 492010, India; Department of Metallurgical Engineering, O.P. Jindal University, Raigarh, 496109, IndiaAmity Institute of Applied Sciences, Amity University Jharkhand, Ranchi, 834002, IndiaDepartment of Metallurgical and Materials Engineering, NIT Raipur, Raipur, 492010, India; Corresponding author.Department of Materials Science and Engineering, Ajou University, Suwon, 16499, South Korea; Department of Energy Systems Research, Ajou University, Suwon, 16499, South Korea; Corresponding author. Department of Materials Science and Engineering, Ajou University, Suwon, 16499, South KoreaWe investigated self-lubricating Al–Mg–Si hybrid metal matrix composites (HMMCs) embedded with MoS2–B4C particulates, for use in automotive engine components. Composites with different B4C content (x = 3.5, 7.0, 10.5, 14.0, and 17 wt%) were prepared, with the MoS2 content of 3.0 wt%. The metal matrix composites were processed using the powder metallurgy route comprising milling for 2 h and cold pressing and consolidation at a sintering temperature of 560 °C. Their dry sliding wear behavior was examined at applied loads (20–50 N) and sliding distances (1–3 km), and the wear variables were optimized using the Taguchi model (L9). Microstructural analysis was performed using a scanning electron microscope equipped with an energy dispersive spectrometer. A homogeneous particle distribution was observed in the HMMCs, without any appreciable instance of agglomerates. The wear resistance and friction coefficient (COF) improved when MoS2 was incorporated into the HMMCs, compared with a matrix alloy under the same operating conditions. In particular, the COF fluctuated up to a sliding distance of 250 m and was constant for larger values. The wear rate depends on not only the maximum hardness but also the appreciation of self-lubricant MoS2. The Taguchi findings showed that the fraction of hybrid reinforcement had the strongest effect on the wear resistance, and it was followed by the applied load, sliding distance, and track diameter. Apart from providing self-lubrication, the MoS2 particles reduced the wear rate.http://www.sciencedirect.com/science/article/pii/S2238785424000061Powder metallurgyHybrid MMCTribologyTaguchiB4CMoS2 |
| spellingShingle | Neeraj Kumar Ashutosh Sharma M.K. Manoj Byungmin Ahn Taguchi optimized wear and self-lubricating properties of Al-alloy composite reinforced with hybrid B4C–MoS2 particulates Journal of Materials Research and Technology Powder metallurgy Hybrid MMC Tribology Taguchi B4C MoS2 |
| title | Taguchi optimized wear and self-lubricating properties of Al-alloy composite reinforced with hybrid B4C–MoS2 particulates |
| title_full | Taguchi optimized wear and self-lubricating properties of Al-alloy composite reinforced with hybrid B4C–MoS2 particulates |
| title_fullStr | Taguchi optimized wear and self-lubricating properties of Al-alloy composite reinforced with hybrid B4C–MoS2 particulates |
| title_full_unstemmed | Taguchi optimized wear and self-lubricating properties of Al-alloy composite reinforced with hybrid B4C–MoS2 particulates |
| title_short | Taguchi optimized wear and self-lubricating properties of Al-alloy composite reinforced with hybrid B4C–MoS2 particulates |
| title_sort | taguchi optimized wear and self lubricating properties of al alloy composite reinforced with hybrid b4c mos2 particulates |
| topic | Powder metallurgy Hybrid MMC Tribology Taguchi B4C MoS2 |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424000061 |
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