EUROPEAN CONGRESS AND EXHIBITION ON ADVANCED MATERIALS AND PROCESSES - EUROMAT 2021

Within the frame of a joint European project we developed a dual-phase medium entropy alloy Al8.5-Cr16.3-Fe35-Ni36.8-Mo3.5 (in wt.-%) which forms an ultrafine vermicular microstructure upon casting. The two phases (fcc) and (bcc) form a bi-continuous network with nearly equal phase fractions. We quantitatively describe the microstructure using scanning electron microscopy (SEM), energy- dispersive X-ray spectroscopy (EDS), and electron backscatter diffraction (EBSD). Further, we present the results from surface hardening experiments, which include wear, shot peening and cavitation erosion tests performed on annealed samples. As reference material we include the super-duplex steel 1.4517 (DIN EN 10283/ASTM A890). On this basis we will discuss potential applications and outline future development steps.