Gas Carburizing Effects On Impact Toughness Of Low Carbon Steel

Noor Akmar, Hassan (2008) Gas Carburizing Effects On Impact Toughness Of Low Carbon Steel. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Carburizing is a process of surface hardening for material. This process is important to improve wear and tear of the material to meet certain proposes. In this study carburize and uncarburize specimen was test with the Charpy impact test in order to determine the strength of materials. The carburizing process was carried out in a tube furnace using carbon monoxide as a carburizing agent. Hypothesis test method was made and the results show that the strength of material is increased by carburizing at 900°C and the Minitab Statistical Software proved the same results. It can be concluded that the gas carburizing process can increase the strength of the material. On the other hand, the tube furnace should be under control environment for safety reason. Average impact energy for uncarburize specimen is 232.4 J, carburized specimen at 500°C at 1 hour is 219.5 J and at 900°C at ½ hour is 292.5 J. Although, further analysis cannot be done due to some technical aspects it is proven however that carburizing process increased the impact energy of low carbon steel investigated. This primary study shows the possibility of gas carburizing as a surface hardening process for low carbon steel. It is recommended to improve the safety aspect of experimental lab equipment for gas carburizing process to allow extensive study for better collection of data for carburized low carbon steel.

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