Sumaila Ochu Abdulrahman*,Saliu Ojo Seidu,Akinlabi Abdulwakili Oyetunji
Issue:
Volume 1, Issue 1, December 2024
Pages:
1-9
Received:
4 November 2024
Accepted:
28 November 2024
Published:
19 December 2024
DOI:
10.11648/j.wjmst.20240101.11
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Abstract: This research focused on the excellent mechanical properties of austempered ductile iron (ADI) which have been harden to significantly increase its application in the production of automobile parts, and improve their performance. ADI has been produced in this work to replace forged steel crankshaft taking advantage of the significant savings in energy, and the resulting advancement of lightweight and durable material. The suitability of calcined periwinkle ash, as an alternative to ferrosilicon-magnesium, as a nodularizer in ductile iron treatment, was investigated. Varied compositions of calcined periwinkle at 600°C, were used in the treatment of different chemical compositions of molten metal. Response surface methodology – Version 17 of the MINITAB two-level full fractional design 2k-1 + 2k+6 giving 30 research runs (castings) was employed in this study. Also, Molybdenum, Vanadium, Copper, and calcined periwinkle ash as alloying additives at various concentrations was considered. Results show that the 5.5wt.% calcined periwinkle ash that produces good graphite nodules and high nodularity in sample N comprising 3.58% C, 2.60% Si, 0.27% Mn, 0.027% Cr, 0.0098% S, 0.023% P, 0.3% Cu, 0.3% V and 0.2% Mo provided the best mechanical properties. The values obtained were within limits obtained by previous researchers in accordance with the American Society for Testing and Materials (ASTM) A897 130-90-09 standards.
Abstract: This research focused on the excellent mechanical properties of austempered ductile iron (ADI) which have been harden to significantly increase its application in the production of automobile parts, and improve their performance. ADI has been produced in this work to replace forged steel crankshaft taking advantage of the significant savings in ene...Show More