Additively Manufactured Functionally Graded FeNi based High Entropy Magnetic Alloys

Compositionally graded FeNiAlCox Cr $_{1-x}(0 \le \mathrm {x}\le 1)$ high entropy alloys (HEA) as well as the related Fe-Ni and Fe-Ni-V, Fe-Ni-Mo alloys have been processed by laser additive manufacturing. The graded composition and processing conditions result in interesting non-monotonic saturation magnetization $(M_{S})$, coercivity $(H_{C})$ and Curie temperature $(T_{C})$ behavior. Such tunable functionally graded magnetic properties offer unique potential for permeability engineering applications, such as electrical machines.