Macroscopic and Microstructural Features of Metal Thin-Wall Fabricated by Laser Material Deposition: A Review

Owing to the versatility without expanding machine’s size, thin-wall has been widely used in high-value parts. The investigation of laser additive manufacturing (LAM), which advantages such as high powder density, easy controllability, and excellent stability, on fabrication drawn much attention. In this paper, research status macroscopic microstructural features metal fabricated by LAM reviewed. deposition quality was mainly focused effect process parameters especially matching z-increment single height. Based grain size growth columnar, characteristics microstructures were analyzed. Considering structural feature thin-wall, phases hardness distribution discussed. loading direction tensile properties modification thermal stress presented.