Laser directed energy deposition technologies for sustainment and additive applications

Abstract

Laser based directed energy deposition (L-DED) is an additive manufacturing process where both laser energy and feed material are supplied to a target substrate, allowing newly fused material to be built up into large structures. As L-DED is readily integrated with existing components, it also serves as a key tool for repair. This chapter provides a brief review of the mechanical properties of L-DED deposits and the key roles of defects and thermal history on performance. Advances in L-DED technology are then explored, identifying how L-DED is being expanded to a wider range of applications and mechanical performance further enhanced.