Epoxidized-Transesterified Cotton Seed Oil for Temperature-Dependent Austempering Process
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Epoxidized-Transesterified Cotton Seed Oil for Temperature-Dependent Austempering Process

Authors: R. M. Dodo, Z. Musa, K. A. Bello, U. Abdullahi, G. A. Faruna

Abstract:

Temperature dependent austempering of high carbon steel using epoxidized-transesterified cotton seed oil (ETO) was examined. Five sets of samples were heated to 850 oC and held for one hour and then quenched in an oil bath of ETO at 250 oC for one hour. The same procedure was performed on the remaining samples, which were austempered at 270 oC, 290 oC, 310 oC, and 330 oC. Next, mechanical property tests were conducted. The austempered samples were then analyzed for microstructure using a scanning electron microscope (SEM). The results indicate that tensile strength and hardness decrease with increasing temperature, while impact strength improved with rising temperature. It was observed that 270 oC is the best austempering temperature, as it produces austempered samples with the best combination of mechanical properties.

Keywords: Epoxidized-transesterified cotton seed oil, austempering temperature, high carbon steel, bainitic structures.

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References:


[1] Aksu, E. (2005). The Effect of Austempering Parameters on Impact and Fracture Toughness of DIN 35NiCrMoV12.5 Gun Barrel Steel, M.Sc. Thesis, Department of Metallurgical and Materials Engineering, Middle East Technical University.
[2] Akor, T., and Tuleum, L.T. (2014). Effect on the austempering time on the mechanical properties of ductile iron, austempered in rubber seed oil. International Journal of Engineering Research and development, 10(8), 32-34.
[3] Olivera E. (2005). An austempering study of ductile iron alloyed with copper. J. Serb Chem. Soc. 70 (7), 1015–1022.
[4] Akor, T. and Ashwe, A. (2014) Investigation of potentials of jatropha seed oil as Austempering quenchant for medium carbon steel, American Journal for Engineering Research (AJER) e-ISSN: 3(8), pp-209-211
[5] Fernandes, P. and Prabhu, K. N. (2008). Comparative study of heat transfer and wetting behaviour of conventional and bioquenchants for industrial heat treatment, International Journal of Heat and Mass Transfer 51: 526–538
[6] Abbaszadeh K., Saghafian H., Kheirandish S., (2012). Sci. Technol. 28 (4), 336-342.
[7] Sandeep K. S. (2012) A Study on the Effect of Austempering Temperature, Time and Copper Addition on the Mechanical Properties of Austempered Ductile Iron, Master of Technology Thesis, Department of Metallurgical and Materials Engineering, National Institute of Technology, Rourkela.
[8] Yin J., Hillert M., Borgenstam A., Second Stage of Upper Bainite in a 0.3 Mass Pct C Steel, Metallurgical and Materials Transactions A, 48A (2017) 1444.
[9] Dalwatkar R., Prabhu N., Singh R K P. Effect of austempering temperature and time on mechanical properties of SAE 9260 steel, AIP Conference Proceedings 1957, 040001 (2018); https://doi.org/10.1063/1.5034329.