Tailoring residual stress and hardness during direct metal deposition

摘要: In a direct-metal deposition (DMD) process used to deposit successive layers in accordance with instructions from CAD/CAM program, the laser beam, or an additional is deployed as localized heat treatment tool instead of tool. The use energy during can minimize, if not eliminate, periodic treatments now required for stress alleviation, thereby compressing DMD fabrication cycle. preferred embodiment, every run may be followed by dry (i.e., without powder) one more intensities manipulate magnitude and location. Since it well known that residual function cooling rate, plurality beams alternatively control rate deposited layer. Examples reduction using H13 steel are provided.