Investigation of the Nodularisation Propensity of Calcined Cashew-Nut Shell-Ash in Cast-Iron Melt Graphite
Production of ductile iron using ferrosilicon-magnesium master alloy in melt treatment is currently fraught with challenges bothering on cost and availability. In this study the suitability of cashew nut shells ash (CNSA) as a viable alternative to magnesium master alloys employed in the treatment o...
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| Format: | Article |
| Language: | English |
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Faculty of Engineering and Technology
2021-06-01
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| Series: | Nigerian Journal of Technological Development |
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| Online Access: | https://journal.njtd.com.ng/index.php/njtd/article/view/478 |
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| author | I. O. Sekunowo U. J. Ugboaja J. A. Tiamiyu |
| author_facet | I. O. Sekunowo U. J. Ugboaja J. A. Tiamiyu |
| author_sort | I. O. Sekunowo |
| collection | DOAJ |
| description | Production of ductile iron using ferrosilicon-magnesium master alloy in melt treatment is currently fraught with challenges bothering on cost and availability. In this study the suitability of cashew nut shells ash (CNSA) as a viable alternative to magnesium master alloys employed in the treatment of molten cast iron for enhanced mechanical properties was studied. The carbonized CNSA used varied from 2-10 wt. % to treat different heat batches; CA1-CA5 containing varied amount of CNSA, CaO and FeSi in the molten cast iron. The cast samples were subjected to both mechanical characterisation (tensile, hardness and impact) and microstructural analysis using Instron electromechanical machine, impact tester and scanning electron microscope (SEM) coupled with energy dispersive spectroscope (EDS). Results show that the 8 wt. % CNSA addition demonstrated the best mechanical properties comparable to ASTM A536 ferritic ductile cast iron. Specifically, the 8 wt. % CNSA cast samples exhibited 433 MPa tensile strength, 144HRC hardness and ductility of 14.7%. Contributions to improved mechanical properties may be attributed to the development of sufficient fractions of graphite nodules during melt treatment with CNSA. These outcomes are a boost both to the production of quality ductile irons and a cleaner environment. |
| first_indexed | 2024-12-12T03:40:27Z |
| format | Article |
| id | doaj.art-34b2b2294a404e2dbb0d378c014349a7 |
| institution | Directory Open Access Journal |
| issn | 2437-2110 |
| language | English |
| last_indexed | 2024-12-12T03:40:27Z |
| publishDate | 2021-06-01 |
| publisher | Faculty of Engineering and Technology |
| record_format | Article |
| series | Nigerian Journal of Technological Development |
| spelling | doaj.art-34b2b2294a404e2dbb0d378c014349a72022-12-22T00:39:41ZengFaculty of Engineering and TechnologyNigerian Journal of Technological Development2437-21102021-06-0118118363Investigation of the Nodularisation Propensity of Calcined Cashew-Nut Shell-Ash in Cast-Iron Melt GraphiteI. O. Sekunowo0U. J. UgboajaJ. A. TiamiyuUniversity of LagosProduction of ductile iron using ferrosilicon-magnesium master alloy in melt treatment is currently fraught with challenges bothering on cost and availability. In this study the suitability of cashew nut shells ash (CNSA) as a viable alternative to magnesium master alloys employed in the treatment of molten cast iron for enhanced mechanical properties was studied. The carbonized CNSA used varied from 2-10 wt. % to treat different heat batches; CA1-CA5 containing varied amount of CNSA, CaO and FeSi in the molten cast iron. The cast samples were subjected to both mechanical characterisation (tensile, hardness and impact) and microstructural analysis using Instron electromechanical machine, impact tester and scanning electron microscope (SEM) coupled with energy dispersive spectroscope (EDS). Results show that the 8 wt. % CNSA addition demonstrated the best mechanical properties comparable to ASTM A536 ferritic ductile cast iron. Specifically, the 8 wt. % CNSA cast samples exhibited 433 MPa tensile strength, 144HRC hardness and ductility of 14.7%. Contributions to improved mechanical properties may be attributed to the development of sufficient fractions of graphite nodules during melt treatment with CNSA. These outcomes are a boost both to the production of quality ductile irons and a cleaner environment.https://journal.njtd.com.ng/index.php/njtd/article/view/478nodularisationductile-ironcashew-nutferrosilicon-magnesium alloymechanical properties |
| spellingShingle | I. O. Sekunowo U. J. Ugboaja J. A. Tiamiyu Investigation of the Nodularisation Propensity of Calcined Cashew-Nut Shell-Ash in Cast-Iron Melt Graphite Nigerian Journal of Technological Development nodularisation ductile-iron cashew-nut ferrosilicon-magnesium alloy mechanical properties |
| title | Investigation of the Nodularisation Propensity of Calcined Cashew-Nut Shell-Ash in Cast-Iron Melt Graphite |
| title_full | Investigation of the Nodularisation Propensity of Calcined Cashew-Nut Shell-Ash in Cast-Iron Melt Graphite |
| title_fullStr | Investigation of the Nodularisation Propensity of Calcined Cashew-Nut Shell-Ash in Cast-Iron Melt Graphite |
| title_full_unstemmed | Investigation of the Nodularisation Propensity of Calcined Cashew-Nut Shell-Ash in Cast-Iron Melt Graphite |
| title_short | Investigation of the Nodularisation Propensity of Calcined Cashew-Nut Shell-Ash in Cast-Iron Melt Graphite |
| title_sort | investigation of the nodularisation propensity of calcined cashew nut shell ash in cast iron melt graphite |
| topic | nodularisation ductile-iron cashew-nut ferrosilicon-magnesium alloy mechanical properties |
| url | https://journal.njtd.com.ng/index.php/njtd/article/view/478 |
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