Abstract
This paper focuses on developing an innovative process route for Austempered Ductile Iron (ADI) casting production. The innovative process route introduces an integrated approach towards casting and heat treatment practices for the production of near-net shape light-weight ADI casting in a permanent mould. It is based on the fundamental correlation between the production parameters and its combined influences on the micro structure to get the desired mechanical properties and performance in ADI castings. Casting and heat treatment practices are implemented efficiently in a control manner using thermal analysis adaptive system (melt quality) and fluidized bed heat treatment facility (controlled and uniform heat treatment) respectively to optimize the foundry practices for ADI production. The influence of austempering time on the microstructural characteristics, mechanical properties, and strain hardening behaviour of ADI was studied. Optical microscopy, scanning electron microscopy (SEM), and X-ray diffraction (XRD) analyses were performed to correlate the mechanical properties with micro structural characteristics. It was observed that the mechanical properties of resulting ADI samples were influenced by the microstructural transformations and varied retained austenite volume fractions obtained due to different austempering time. The results indicate that the strain-hardening behaviour of the ADI material is influenced by the carbon content of retained austenite.
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References
L.C. Chang, “Carbon content of austenite in austempered ductile iron,” Scripta Materialia, 39 (1) (1998), 35–38.
F. Klocke, M. Arft, and D. Lung, “Material-related aspects of the machinability of Austempered Ductile Iron,” Production Engineering, 4 (5) (2010), 433–441.
J. Achary, and D. Venugopalan, “Microstructural development and austempering kinetics of ductile iron during thermomechanical processing,” Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 31 (10) (2000), 2575–2585.
U. Batra, S. Ray, and S.R. Prabhakar, “Effect of Austenitising Temperature on Micro structure and Wear Properties of Low Carbon Equivalent Austempered Ductile Iron,” Journal of Materials Engineering and Performance, 12 (5) (2003), 597–601.
Y. Amran, A. Katsman, P. Schaaf, and M. Bamberger, “Influence of Copper Addition and Temperature on the Kinetics of Austempering in Ductile Iron,” Metallurgical and Materials Transactions B, 41 (5) (2012), 1052–1058.
A. Trudel, and M. Gagne, “Effect of composition and heat treatment parameters on the characteristics of austempered ductile irons,” Canadian Metallurgical Quarterly, 36 (5) (1997), 289–298.
P.A. Blackmore and R.A. Harding, “The effects of metallurgical process variables on the properties of austempered ductile irons,” Journal of Heat Treating, 3 (4) (1984), 310–325.
A.A. Nofal, and L. Jekova, “Novel processing techniques and applications of austempered ductile iron,” Journal of the University of Chemical Technology and Metallurgy, 44 (3) (2009), 213–228.
J. Achary, “Tensile properties of austempered ductile iron under thermomechanical treatment,” JMEPEG, 9 (2000), 56–61.
J.F. Janowak, and R.B. Gundlach, “Approaching austempered ductile iron properties by controlled cooling in the foundry,” Journal of Heat Treating, 4 (1) (1985), 25–31.
J. Yang, and S.K. Putatunda, Improvement in Strength and Toughness of Austempered Ductile Cast Iron by a Novel Two-Step Austempering Process,” Materials and Design, 25 (3) (2004), 219–230.
A. Meena, and M. El Mansori, “Drilling performance of green Austempered Ductile Iron (ADI) grade produced by novel manufacturing technology,” International Journal of Advanced Manufacturing Technology, 59 (1) (2012), 9–19.
A. Meena, and M. El Mansori, “Study of dry and minimum quantity lubrication drilling of novel austempered ductile iron (ADI) for automotive applications,” Wear, 271 (9–10) (2011), 2412–2416.
P. Beeley, “Foundry technology, 2nd edition,” Butterworth-Heinemann, Oxford, 2001, pp. 443–622.
S.V. Shepel, and S. Paolucci, “Numerical simulation of filling and solidification of permanent mold castings,” Applied Thermal Engineering, 22 (2) (2002), 229–248.
A. Meena, M. El Mansori, and P. Ghidossi, “Machinability of austempered ductile iron (ADI) produced by integrated green technology of continuous casting and heat treatment processes,” AIP Conference Proceedings, 1315 (2010), 1521–1526.
A. Meena, M. El Mansori, P. Ghidossi, and A. Mkaddem, “Anti-friction coating for drilling of green Austempered Ductile Iron (ADI) grade,” AIP Conference Proceedings, 1353 (2011), 1800–1805.
R.E. Haimbaugh, “Practical Induction Heat Treating”, ASM International, 2001, 83–119.
S. Zhou, K. Zhang, Y. Wang, J.F. Gu, and Y.H. Rong, “The Mechanism of High Strength-Ductility Steel Produced by a Novel Quenching-Partitioning-Tempering Process and the Mechanical Stability of Retained Austenite at Elevated Temperatures,” Metallurgical and Materials Transactions A, 43 (3) (2012), 1026–1034.
B. Bosnjak, B. Radulovic, K. Pop-Tonev, and V. Asanovic, “Influence of microalloying and heat treatment on the kinetics of bainitic reaction in austempered ductile iron,” JMEPEG, 10 (2001), 203–211.
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Meena, A., El Mansori, M. (2014). Integrated Casting-Heat Treatment Process Route for Near Net Shape ADI Casting Production. In: Tiryakioğlu, M., Campbell, J., Byczynski, G. (eds) Shape Casting: 5th International Symposium 2014. Springer, Cham. https://doi.org/10.1007/978-3-319-48130-2_5
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DOI: https://doi.org/10.1007/978-3-319-48130-2_5
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48594-2
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