Effects of Heat Treatment on the Mechanical Properties of Rolled Medium Carbon Steel
Affiliation(s)
Ajaokuta Steel Company Limited, Ajaokuta Steel City, Kogi State, Nigeria.. Metallurgical and Materials Engineering Department, Federal University of Technology, Akure,Ondo State, Nigeria.
Ajaokuta Steel Company Limited, Ajaokuta Steel City, Kogi State, Nigeria.. Metallurgical and Materials Engineering Department, Federal University of Technology, Akure,Ondo State, Nigeria.
ABSTRACT
Investigations were carried out to study the effects of heat treatment on the mechanical properties of rolled medium carbon steel. The steel was heated to the austenizing temperature of 830℃ and water quenched; It was reheated to the ferrite – austenite two phase region at a temperature of 745℃ below the effective Ac3 point. The steel was then rapidly quenched in water and tempered at 480℃ to provide an alloy containing strong, tough, lath martensite (fibres) in a ductile soft ferrite matrix. The result shows that the steel developed has excellent combination of tensile strength, impact strength and ductility which is very attractive for structural use.
Investigations were carried out to study the effects of heat treatment on the mechanical properties of rolled medium carbon steel. The steel was heated to the austenizing temperature of 830℃ and water quenched; It was reheated to the ferrite – austenite two phase region at a temperature of 745℃ below the effective Ac3 point. The steel was then rapidly quenched in water and tempered at 480℃ to provide an alloy containing strong, tough, lath martensite (fibres) in a ductile soft ferrite matrix. The result shows that the steel developed has excellent combination of tensile strength, impact strength and ductility which is very attractive for structural use.
Cite this paper
O. Daramola, B. Adewuyi and I. Oladele, "Effects of Heat Treatment on the Mechanical Properties of Rolled Medium Carbon Steel," Journal of Minerals and Materials Characterization and Engineering, Vol. 9 No. 8, 2010, pp. 693-708. doi: 10.4236/jmmce.2010.98050.
O. Daramola, B. Adewuyi and I. Oladele, "Effects of Heat Treatment on the Mechanical Properties of Rolled Medium Carbon Steel," Journal of Minerals and Materials Characterization and Engineering, Vol. 9 No. 8, 2010, pp. 693-708. doi: 10.4236/jmmce.2010.98050.
References
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[1] Adewuyi B.O., A.A Afonja and C.O. Adegoke. (2005). Effects of Isothermal Transformation on the Fatigue strength of Austempered Ductile Iron, Bostwana Journal of Technology, vol. 14, No 2, P.22. [2] Bob, C. (2003). Making Steel Stronger. Practical Welding Today [3] Callister Jr; W.O. (1987), Material Science and Engineering. An introduction,John Willey, U.S.A pp 322-328 [4] Cots, B.A; Oliveira, F.LG, Babosa, Lacerda, C.B.M. and Arayo, F.G.S. (2003); The Relationship between Structure and Mechanical Properties of Metals; NPL Symposium, HMSO, London pp. 455-456. [5] Dave, Vanaken, (2003). Engineering Concept, Strength of Tempered Martensite. [6] Davis, D.J. and Oelman, LA (1993). The tructure, Properties, and Heat Treatment of Metals, London, Pitman Books, pp.44.52 [7] Dieter, G.E. (2000). Mechanical Metallurgy, 5th Edition; Singapore, Mcgraw-Hill Book, pp. 186-195. [8] Faleke, E.O. (1987). Metallurgical investigation of a Corroded Peugeot Car Body. Unpublished Thesis, Federal University of Technology, Akure. [9] Gorni, A.A (2004). Steel Forming and Heat-Treating Hand Book, vol.2, Sao va cente, Brazil p4. [10] Hauang- Chuan chen and Gwo-Hwa Cheng (1989). Effect of Martensite Strength on the Tensile Strength of dual phase Steel; Journal of Materials Science, volume 24,pp. 1991- 1994. [11] Mamoru, O. Yukito, T; Hitoshi, K; and Yuji, F. (1990). Development of New Steel Plates for building structural use, Nippon Steel Technical Report, No 44 pp. 8-15. [12] Lee, W.S. and Su T.T. (1999) Mechanical Properties and microstructural Feature of AISI430 High-Strength Alloy Steel under Quenched and Tempered Condition. Journal 0f materials processing technology; vol. 87, pp.198-206 [13] Oberg, E; et al. (1996). Machinery’s Handbook (25th ed.), Idustrial Press Inc. [14] Rajan, T.V; Sharma, C.P. and Sharma, A. (1989). Heat Treatment Principles and Techniques.Prentice Hall of India Private'Limited, New Delhi. pp. 36-58 [15] Rollanson, E.C, (1973). Metallurgy for Engineers, 4th Edition, London, Edward Arnold (Pulisher) Ltd; pp. 12-126. [16] Scully, J.C. (1990). The Fundamental of Corrosion. Maxwell Macmillan Weinberg, F. (1970). Tools and Techniques in physical Metallurgy; vol. 1, New Perganman Publishing Corporation, Oxford. [17] Saleh, M.H. (2001). Retained Austenite in dual Phase Silicon Steels and its Effect on Mechanical Properties; Journal of Materials Processing Technology, volume 113, Issues 1-3, pp. 587-593. [18] Smith, W.F. and Hashemi, J (2006). Foundations of Materials Science and Engineering, 4th Edition; Mcgraws - Hill Book. pp. 28-36. [19] Taylor Lyman, Howard, E. Boyer, William, J. carnes, Margeret, W. Metals Hand Book, 8th Edition, vol. 8. American Society for Metals Metal part, Ohio. pp1932-1948 [20] Thomas, G; Ahn J.H. and Kin, N.J. (1986). Controlled Rolling process for Dual-phase Steels and Shapes; The Metals Society, London, Book 285, pp. 121-124. [21] Weinberg, F. (1970). Tools and Techniques in Physical Metallurgy; New York, Marcel Dekker, pp. 292-295