Dry sliding wear behaviour of Al6061–5%SiC—TiB2 hybrid metal matrix composites synthesized by stir casting process
Functionally graded Al6061-SiC composites are widely used in the manufacturing of bearing surfaces, bushes, gears, cylinder liners, pistons and camshafts. However, due to the poor density and higher level of porosity, the usages of Al6061-SiC composites are limited. The Purpose of the study is to im...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/abd19b |
| _version_ | 1797746816349896704 |
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| author | J Justin Maria Hillary R Ramamoorthi Samson Jerold Samuel Chelladurai |
| author_facet | J Justin Maria Hillary R Ramamoorthi Samson Jerold Samuel Chelladurai |
| author_sort | J Justin Maria Hillary |
| collection | DOAJ |
| description | Functionally graded Al6061-SiC composites are widely used in the manufacturing of bearing surfaces, bushes, gears, cylinder liners, pistons and camshafts. However, due to the poor density and higher level of porosity, the usages of Al6061-SiC composites are limited. The Purpose of the study is to improve the wear behaviour of the Al606l–SiC composites to widen the engineering application of the Al6061 alloy. In this present work, an effort is made to examine the dry sliding wear characteristics on a newly developed hybrid metal matrix composite of Al6061%-5%SiC- x TiB _2 ( x = 2%, 4%, 6%, 8% and 10 wt%) fabricated by stir casting route. The Wear Rate and Coefficient of Friction were examined using a Pin-on-Disc tribometer at various dry sliding conditions. The results of the experimental studies revealed that with the addition of secondary hard ceramic TiB _2 particles, the wear behaviour was found to be significantly improved on the hybrid composite due to the new formation of Mechanically Mixed Layer (Fe _2 O _3 layer). The Coefficient of Friction showed a decreasing trend in the case of varying loads and sliding distances. Conversely, the COF exhibit an increasing trend concerning the sliding velocities. The results have shown that the highly concentrated Al6061—5%SiC—10%TiB _2 hybrid composite achieved the least COF values of 0.26, 0.31 and 0.29 at higher applied load (40N), sliding distance (2000 m) and sliding velocity (2.61 m s ^−1 ) conditions respectively. The worn surface of the hybrid composite indicates fine grooves with minimal abrasion. |
| first_indexed | 2024-03-12T15:42:12Z |
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| id | doaj.art-774c8ea40a454770a202e7b9ec613cb3 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:42:12Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-774c8ea40a454770a202e7b9ec613cb32023-08-09T15:55:10ZengIOP PublishingMaterials Research Express2053-15912020-01-0171212651910.1088/2053-1591/abd19bDry sliding wear behaviour of Al6061–5%SiC—TiB2 hybrid metal matrix composites synthesized by stir casting processJ Justin Maria Hillary0https://orcid.org/0000-0001-9783-9053R Ramamoorthi1Samson Jerold Samuel Chelladurai2https://orcid.org/0000-0001-9655-3723Department of Mechanical Engineering, Hindusthan Institute of Technology, Coimbatore, IndiaDepartment of Mechanical Engineering, Sri Krishna College of Engineering & Technology, Coimbatore, IndiaDepartment of Mechanical Engineering, Sri Krishna College of Engineering & Technology, Coimbatore, IndiaFunctionally graded Al6061-SiC composites are widely used in the manufacturing of bearing surfaces, bushes, gears, cylinder liners, pistons and camshafts. However, due to the poor density and higher level of porosity, the usages of Al6061-SiC composites are limited. The Purpose of the study is to improve the wear behaviour of the Al606l–SiC composites to widen the engineering application of the Al6061 alloy. In this present work, an effort is made to examine the dry sliding wear characteristics on a newly developed hybrid metal matrix composite of Al6061%-5%SiC- x TiB _2 ( x = 2%, 4%, 6%, 8% and 10 wt%) fabricated by stir casting route. The Wear Rate and Coefficient of Friction were examined using a Pin-on-Disc tribometer at various dry sliding conditions. The results of the experimental studies revealed that with the addition of secondary hard ceramic TiB _2 particles, the wear behaviour was found to be significantly improved on the hybrid composite due to the new formation of Mechanically Mixed Layer (Fe _2 O _3 layer). The Coefficient of Friction showed a decreasing trend in the case of varying loads and sliding distances. Conversely, the COF exhibit an increasing trend concerning the sliding velocities. The results have shown that the highly concentrated Al6061—5%SiC—10%TiB _2 hybrid composite achieved the least COF values of 0.26, 0.31 and 0.29 at higher applied load (40N), sliding distance (2000 m) and sliding velocity (2.61 m s ^−1 ) conditions respectively. The worn surface of the hybrid composite indicates fine grooves with minimal abrasion.https://doi.org/10.1088/2053-1591/abd19bHybrid aluminium metal matrix compositesstir casting processSiC and TiB2 particle reinforcementswear behaviourworn surface analysis |
| spellingShingle | J Justin Maria Hillary R Ramamoorthi Samson Jerold Samuel Chelladurai Dry sliding wear behaviour of Al6061–5%SiC—TiB2 hybrid metal matrix composites synthesized by stir casting process Materials Research Express Hybrid aluminium metal matrix composites stir casting process SiC and TiB2 particle reinforcements wear behaviour worn surface analysis |
| title | Dry sliding wear behaviour of Al6061–5%SiC—TiB2 hybrid metal matrix composites synthesized by stir casting process |
| title_full | Dry sliding wear behaviour of Al6061–5%SiC—TiB2 hybrid metal matrix composites synthesized by stir casting process |
| title_fullStr | Dry sliding wear behaviour of Al6061–5%SiC—TiB2 hybrid metal matrix composites synthesized by stir casting process |
| title_full_unstemmed | Dry sliding wear behaviour of Al6061–5%SiC—TiB2 hybrid metal matrix composites synthesized by stir casting process |
| title_short | Dry sliding wear behaviour of Al6061–5%SiC—TiB2 hybrid metal matrix composites synthesized by stir casting process |
| title_sort | dry sliding wear behaviour of al6061 5 sic tib2 hybrid metal matrix composites synthesized by stir casting process |
| topic | Hybrid aluminium metal matrix composites stir casting process SiC and TiB2 particle reinforcements wear behaviour worn surface analysis |
| url | https://doi.org/10.1088/2053-1591/abd19b |
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