Mechanical, and corrosive properties of AA7075 aluminium reinforced with rice husk ash particulates
The mechanical and corrosive properties of AA7075 alloy reinforced with rice husk ash (RHA) particles were studied. AA7075 matrix composite reinforced with varying percentage weight compositions of rice husk ash particles (5%, 10%, 15% and 20% wt) were prepared using stir casting technique. The mech...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ad0dd3 |
| _version_ | 1797447592614821888 |
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| author | O O Joseph J O Dirisu J Atiba S Ante J A Ajayi |
| author_facet | O O Joseph J O Dirisu J Atiba S Ante J A Ajayi |
| author_sort | O O Joseph |
| collection | DOAJ |
| description | The mechanical and corrosive properties of AA7075 alloy reinforced with rice husk ash (RHA) particles were studied. AA7075 matrix composite reinforced with varying percentage weight compositions of rice husk ash particles (5%, 10%, 15% and 20% wt) were prepared using stir casting technique. The mechanical, and corrosive properties of the new material were compared with that of the matrix alloy. The mechanical properties were also improved due to the automated stirring action employed during the casting process. AA7075-RHA composites had improved mechanical properties compared to the base matrix (AA7075). In terms of tensile strength there was an increase in this mechanical property with an increase in weight fraction of RHA particle (51% at 10% RHA), hardness (25.67% at 20% RHA), while for impact resistance, the reverse was the case as there was a 10.98% decrease in the resistance of the composite as the reinforcement fraction increased from 0%–20% RHA. The progressive decreases in the impact strength of the reinforced composite were probably due to agglomeration and non-homogeneity at higher reinforcements values. Corrosion experiments carried out showed improved properties in the reinforced composite compared to the unreinforced alloy, the corrosive properties improved with an increase in weight fraction of RHA in terms of weight loss (20.63% at 10% RHA), potentio-dynamic polarization (30.7% at 10% RHA) and open circuit potential (1.60% at 20%RH). The developed composite may be suitably applied in high-speed rotating shafts and automotive engineered brake parts. |
| first_indexed | 2024-03-09T13:58:14Z |
| format | Article |
| id | doaj.art-9e619bc249904ba8b3b1ccbecb1f4a9f |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-09T13:58:14Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-9e619bc249904ba8b3b1ccbecb1f4a9f2023-11-30T11:51:08ZengIOP PublishingMaterials Research Express2053-15912023-01-01101111652010.1088/2053-1591/ad0dd3Mechanical, and corrosive properties of AA7075 aluminium reinforced with rice husk ash particulatesO O Joseph0https://orcid.org/0000-0002-7088-8055J O Dirisu1J Atiba2https://orcid.org/0009-0006-8644-5909S Ante3J A Ajayi4Department of Mechanical Engineering, Covenant University , P.M.B 1023, Canaanland, Ota, Ogun State, NigeriaDepartment of Mechanical Engineering, Covenant University , P.M.B 1023, Canaanland, Ota, Ogun State, NigeriaDepartment of Mechanical Engineering, Covenant University , P.M.B 1023, Canaanland, Ota, Ogun State, NigeriaDepartment of Mechanical Engineering, Covenant University , P.M.B 1023, Canaanland, Ota, Ogun State, NigeriaDepartment of Metallurgical & Materials Engineering, Federal University of Technology , P.M.B 704, Akure, Ondo State, NigeriaThe mechanical and corrosive properties of AA7075 alloy reinforced with rice husk ash (RHA) particles were studied. AA7075 matrix composite reinforced with varying percentage weight compositions of rice husk ash particles (5%, 10%, 15% and 20% wt) were prepared using stir casting technique. The mechanical, and corrosive properties of the new material were compared with that of the matrix alloy. The mechanical properties were also improved due to the automated stirring action employed during the casting process. AA7075-RHA composites had improved mechanical properties compared to the base matrix (AA7075). In terms of tensile strength there was an increase in this mechanical property with an increase in weight fraction of RHA particle (51% at 10% RHA), hardness (25.67% at 20% RHA), while for impact resistance, the reverse was the case as there was a 10.98% decrease in the resistance of the composite as the reinforcement fraction increased from 0%–20% RHA. The progressive decreases in the impact strength of the reinforced composite were probably due to agglomeration and non-homogeneity at higher reinforcements values. Corrosion experiments carried out showed improved properties in the reinforced composite compared to the unreinforced alloy, the corrosive properties improved with an increase in weight fraction of RHA in terms of weight loss (20.63% at 10% RHA), potentio-dynamic polarization (30.7% at 10% RHA) and open circuit potential (1.60% at 20%RH). The developed composite may be suitably applied in high-speed rotating shafts and automotive engineered brake parts.https://doi.org/10.1088/2053-1591/ad0dd3aluminiumrice husk ashcompositereinforcementmetal matrix |
| spellingShingle | O O Joseph J O Dirisu J Atiba S Ante J A Ajayi Mechanical, and corrosive properties of AA7075 aluminium reinforced with rice husk ash particulates Materials Research Express aluminium rice husk ash composite reinforcement metal matrix |
| title | Mechanical, and corrosive properties of AA7075 aluminium reinforced with rice husk ash particulates |
| title_full | Mechanical, and corrosive properties of AA7075 aluminium reinforced with rice husk ash particulates |
| title_fullStr | Mechanical, and corrosive properties of AA7075 aluminium reinforced with rice husk ash particulates |
| title_full_unstemmed | Mechanical, and corrosive properties of AA7075 aluminium reinforced with rice husk ash particulates |
| title_short | Mechanical, and corrosive properties of AA7075 aluminium reinforced with rice husk ash particulates |
| title_sort | mechanical and corrosive properties of aa7075 aluminium reinforced with rice husk ash particulates |
| topic | aluminium rice husk ash composite reinforcement metal matrix |
| url | https://doi.org/10.1088/2053-1591/ad0dd3 |
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