Microstructure and properties of Fe_xCrMnAlCu high-entropy alloy

Abstract

FexCrMnAlCu ( x = 0, 0.5, 1, 1.5, 2) high-entropy alloys were prepared by vacuum arc melting in this study. The effects of the element Fe on the microstructure evolution, mechanical properties, and wear behaviour of FexCrMnAlCu were evaluated. Results show that all FexCrMnAlCu consisted of dendrites (disordered BCC) and interdendritic (disordered FCC) structures. With an increase in Fe, uniformly distributed rod-like precipitates (Φ50 nm × 300 nm) rich in Al and Cu (ordered BCC) were formed in the dendrites; the volume fraction of the dendrites increased gradually, whereas the content of the interdendritic structures decreased. Through mechanical property testing, it was found that the content of precipitates significantly affected the strength and hardness of the FexCrMnAlCu.

Alloying, phases and magnetic behaviour of mechanically alloyed FeNiMnCu-based high entropy alloys

“…There are several methods used to produce HEAs [29], such as mechanical alloying [30][31][32], arc melting [33,34], addtitive manufacturing [35,36], and laser cladding [37,38]. The phase structure and properties of FeNiMnCuCo and FeNiMnCuCr alloying systems produced by arc melting have been studied before [39,40].…”