Analysis of hardness and microstructure of Fe-Al-Cr materials against sintering temperature variations 100°C, 200°C, 300°C using mechanical alloying techniques.

Al-Fe-Cr alloy material is a material that is widely used as a component in the automotive industry, construction, household appliances, aircraft, and others. Where the Al material is combined with the hope of improving the physical and mechanical properties of each material. Recently, the Al-Fe-Cr alloy material has become a candidate material in the development of cladding in the fourth-generation core reactor (Light Water Reactor). In this study, pure Al material was combined with pure Fe and pure Cr material, where in the sample the percentage of alloy powder was Fe = 88%, Al = 10%, and Cr = 2%. The milling process was carried out for 120 minutes. The obtained powder is then pressed to form pellets with a pressure of 20 tons and then sintered at 100°C, 200°C, and 300°C using a furnace. sintering at 300 °C has a higher HRC value and the sample becomes denser than sintering at 200 and 100 °C. The microstructure of the 88% Fe, 10% Al, and 2% Cr alloy shows the presence of impurities including C, Mg, O, Si, Ca, Cl, and Ti. [ABSTRACT FROM AUTHOR]