In this paper the effect of heat treatment on the structure and magnetic properties of Ni36Co37Al27 alloy
obtained by laser powder bed fusion from powders synthesized by mechanical alloying and plasma
spheroidization was studied. This alloy is promising to exhibit a magnetically controlled shape memory
effect at room temperature. It was shown that the base of the alloy was two-phase (β + γ). Sizes of the
structural elements increases with a rise in annealing temperature (Tann), however, the ratio of γ- to β-phase
decreases from Tann = 900 °С to Tann= 1300 °С, which agrees well with the observed monotonic decrease in
saturation magnetization. It was also found that Hc of the alloy increases from 74.9 Oe in non-heat-treated
state to about 120 Oe after the heat treatment, which is due to a decreased content of γ-phase in combination with the precipitation of γ'-phase inclusions. The results obtained can be used in the future to
manipulate the high-coercivity properties of Ni-Co-Al alloys at different stages of additive manufacturing