Spatial heat treatment of additively manufactured objects

A method of making a three-dimensional object, the method comprising:

• providing a feedstock comprising a matrix material, and one or more susceptor structures dispersed in the matrix material;
• disposing the feedstock in one or more layers to form a three-dimensional object;
• and
• exposing the three-dimensional object to an energy field to excite the one or more susceptor structures, wherein the one or more susceptor structures produce heat when excited by the energy field, and at least a portion of the heat transfers to at least a portion of the matrix material.

A method of thermally welding components, the method comprising:

• providing a first component comprising a first matrix material, and one or more first susceptor structures disposed in at least a first region of the first matrix material, wherein the one or more first susceptor structures are configured to be excited by an energy field;
• providing a second component comprising a second matrix material, the second matrix material having a second region;
• contacting the first region with the second region;
• and
• exposing at least the first region and the second region to the energy field to excite the one or more first susceptor structures in the first region, wherein the one or more first susceptor structures produce heat when excited by the energy field, and at least a portion of the heat transfers to at least a portion of the first matrix material to thermally weld the first component to the second component.