This research means to evaluate the effect of adding Aluminum as alloying element on wear behavior and oxidation resistance of heat resistant steel DIN1.4837. this steel used in the manufacturing of industrial parts in pelletizing units and because of these parts, contact with the hot gas and dust in the gases it is necessary to have high resistance against wearing and oxidation. Adding of aluminum to chemical compound of these steels, caused formation of intermetallic compounds such as AlNi and also Al 2 O 3 formed a stable and protective oxide layer on the surface of these parts. In order to evaluate the effect of Aluminum alloy element, steel’s samples with different percentage of Aluminum (2, 4 and 7 percent) produced by casting operation. To ensure of samples chemical compound, X-Ray Fluorescence Spectroscopy used. Then homogenization treatment was performed on samples and hardness of them was measured before and after the homogenization treatment. In order to evaluate of wear behavior, the test performed in environmental temperature and 500° C and for analyzing the results, Scanning Electron Microscope and Energy Dispersive X-Ray Spectroscopy was used. Also oxidation test done at 900° C for 50 hours on the samples and evaluating the results, samples scanned with electron microscope and to study the phases and chemical compound diffraction and Energy Dispersive X-Ray Spectroscopy was used. The results have shown that by adding Aluminum to the chemical compound of this steel, it’s hardness increased due to intermetallic phases consist of Ni and Al, that affect on the wear properties of steel. The result also show that oxidation resistance in high temperature of steel increased by adding Aluminum to chemical compound due to create Al 2 O 3 as a protective oxide layer. Keywords: heat-resistant steel, aluminum, wear, oxidation
