Two alloys based on nickel and designed to be reinforced by MC carbides thanks the presence of Hf Ta were produced casting. They subjected 50 h-long isothermal exposure at 1250 °C in synthetic air with thermogravimetric monitoring oxidation progress. In as-cast state, they contain both significant quantities (Hf,Ta)C carbides. Their verified melting start temperatures, close 1300 °C, allowed pe...

Abstract The oxidation behavior of five different high-entropy alloys from the Al–Co–Cr–Fe–Ni metallic system, namely Al x (CoCrFeNi) 100- ( = 0; 3; 6; 9; 12), was studied under thermal-cycling conditions, at 1273 K in air atmosphere. choice selected compositions allowed for covering chromia-to-alumina former transition, as well transition FCC single-phase solid solution structure to multiphase...