The Combine Effect of Copper and Nickel on Tensile Strength of Ductile Iron

Abstract:

The present study investigated the effect of copper and nickel together on ductile iron. Ductile iron was produced by the sandwich method using induction furnace installed at local commercial foundry. Heats without copper & nickel and with copper 0.5 wt% and 1.0 wt% nickel in combination were made. Tensile samples were machined from Y Block castings. Tensile test was performed to find out the effect of copper and nickel together on tensile strength of ductile iron. Effect of austempering heat treatment was also studied to find out the effect of copper and nickel in combination on tensile strength. The samples were austenitized at 900 oC for one hour and austempered at 270 oC and 370 oC. It was found that with the addition of copper and nickel the tensile strength of ductile iron increased. The tensile strength was more than double when the samples were subjected to austempering heat treatment at 270°C.

• Periodical: Applied Mechanics and Materials (Volumes 110-116)
• Pages: 665-670
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.110-116.665
• Online since: October 2011
• Authors: M. Ashraf Sheikh
• Keywords: Austempering, Austentized, Ductile Iron, Sandwich, Tensile Strength

References

[1] S. I. Karsay; Ductile Iron I Production, Quebec Iron and Titanium Corporation, Canada, (1985) p.9.

[2] SOREL METAL, Ductile Iron Advantage, http: /www. srelmetal. com/ en/ ductile/ main_advantage. htm.

[3] J. R. Keogh; Section IV, Ductile Iron Society, (1998) pp.1-25.

[4] A.A. Cushway; The Effects of Copper and Nickel in the Production of Austempered Nodular Irons, BCIRA Report, (1984) pp.435-439.

[5] U. Batra et al., Effect of Nickel and Copper on Austempered Ductile Iron, Journal of Materials Engineering and Performance [J]13 (2004)p.64.

[6] http: www. Aditreatments. com/cost_benifits. php.

[7] B.V. Kovacos, Increased Wear Resistant and Toughness in Grey Cast Iron, Modern Cast, [J](1990)pp.38-41.

[8] J. Aranzabal et al , Influence of Amount and Morphology of Retained Austenite on Mechanical Properties of an Austemperd Ductile iron, Materials Science Technology [J]8 (1992) pp.263-273.

[9] P.P. Rao and S.K. Putatanda, Influence of Microstructure on Fracture Toughness of Austemperd Ductile Iron, Metall. Mater. Trans. A [J] 28 (1997) pp.1457-1470.

DOI: 10.1007/s11661-997-0208-1

[10] Cheng-Hsu et al., Microstucture and Mechanical Properties of 4% cobalt and nickel alloyed Ductile Iron, Materials Science and Engineering A, [J] (2007)pp.339-346.