Method of heat-treating additively manufactured ferromagnetic components

A method, comprising:

• heat-treating an additively manufactured ferromagnetic component such that a saturation flux density of a heat-treated ferromagnetic component is greater than a saturation flux density of an as-formed ferromagnetic component, wherein the heat-treated ferromagnetic component is further characterized by a plurality of grains such that at least 25% of the plurality of grains have a median grain size less than 10 microns and 25% of the plurality of grains have a median grain size greater than 25 microns, wherein different portions of the additively manufactured ferromagnetic component are selectively heat treated to achieve determined saturation flux density and tensile strength values in these portions, wherein the heat-treating includes holding the additively manufactured ferromagnetic component at a temperature greater than a ferrite-to-austenite transition temperature for at least 10 min.

A method, comprising:

• heat-treating an additively manufactured ferromagnetic component such that a saturation flux density of a heat-treated ferromagnetic component is greater than a saturation flux density of an as-formed ferromagnetic component, wherein the heat-treated ferromagnetic component is further characterized by a plurality of grains such that at least 25% of the plurality of grains have a median grain size less than 10 microns and 25% of the plurality of grains have a median grain size greater than 25 microns, wherein the heat-treated ferromagnetic component has a unitary structure and a saturation flux density greater than 2 Tesla, wherein the heat-treating includes holding the additively manufactured ferromagnetic component at a temperature greater than a ferrite-to-austenite transition temperature, for at least 10 min.