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Faculty of Metallurgy and Technology Travnička cesta 1, Zenica, University of Zenica , Zenica , Bosnia and Herzegovina
Faculty of Metallurgy and Technology Travnička cesta 1, Zenica, University of Zenica , Zenica , Bosnia and Herzegovina
Institute „Kemal Kapetanović“ of Zenica Travnička cesta 7, Zenica, University of Zenica , Zenica , Bosnia and Herzegovina
Carburizing is a very popular method of thermochemical treatment to increase the surface hardness of steel parts. It is achived by heating the steel at an austenite temperature in an environment of appropriate carbon source. Carbon sources provide the corresponding so-called a carbon potential (C potential). In the case of equilibrium state, the carbon concentration is the same in a gas atmosphere and steel. However, a nonequilibrium state leads to carburizing or decarburising processes. This paper presents the results of microstructure analysis of the steel 20X after carburizing heat treatment. The microstructure analysis was performed for the initial state of the samples, after carburizing without quenching (cooling on the air) and in the quenched state. After the heat treatment a decarburising area at the surface of the sample is visible.
carburizing, decarburising, microstructure, depth of carburized layer, depth of decarburised layer
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