The Effects Of Heat Treatments On The Mechanical Properties Of Law Carbon Steel

Nik Faiz , Nik Ab Wahab (2008) The Effects Of Heat Treatments On The Mechanical Properties Of Law Carbon Steel. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The research of the effects of heat treatments on the mechanical properties of carbon steel has been developed purposely to study on the microstructure with the relation of the mechanical properties of carbon steel. The study obviously emphasize on the research based on the metallurgy of the carbon steel. Low carbon steel and medium carbon steel has been chosen to be used as the type for this study. ln carbon steel metallurgy, the important is to understand the phase diagram of iron carbon. In the diagram consists on the phase transformation that occurs as a resuJt of heat treatment process. The basic iron phase such as austenite, ferrite, bainite, pearlite and martensite will be obtained from the results ofthe heat treatment. These microstructures will affect the mechanical properties of the carbon steel based on the theory. To accomplish this research, the method is to give the heat treatment on the carbon steel and observe the microstructure. After the microstructure of the metal obtained, the mechanical test was done on the heat treated steel such as tensile test, hardness test and impact test to determine the mechanical properties and its relation with the microstructures obtained. From mechanical test, the most brittle property is the specimen that undergone water quenching and the annealing heat treatment provide the most ductile property. While the tempering specimen has the most suitable properties since it has balance ductile and brittle properties.

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