Effects of Heat Treatment on the Mechanical Properties of Rolled Medium Carbon Steel

O.O. Daramola, B.O. Adewuyi, I.O. Oladele

Ajaokuta Steel Company Limited, Ajaokuta Steel City, Kogi State, Nigeria..
Metallurgical and Materials Engineering Department, Federal University of Technology, Akure,Ondo State, Nigeria.

DOI: 10.4236/jmmce.2010.98050                

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.

Keywords

Lath martensite, Ferrite, Austenite, Tensile strength and Ductility.

Conflicts of Interest

The authors declare no conflicts of interest.

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