研究目的
Investigating the macro morphologies and microstructures of 316L stainless steel deposited by laser metal-wire deposition under optimized conditions.
研究成果
Pore- and crack-free, minimally diluted and well bonded 316L stainless steel single bead and 5*5 block samples were deposited by laser metal-wire deposition. High aspect ratio and smooth surfaces without defects single beads could be obtained with a desirable deposition condition. Fine uniform equiaxed grains can be obtained only under the appropriate process conditions with low heat input. Good metallurgical bonding was obtained between tracks in the 5*5 block sample.
研究不足
The study focused on the macro morphologies and microstructures of 316L stainless steel deposited by laser metal-wire deposition. The technical and application constraints, as well as potential areas for optimization, were not extensively discussed.
1：Experimental Design and Method Selection:
The study utilized laser metal deposition (LMD) with wire as the filler material for additive manufacturing. A YLR-4000 S2 CW Fiber Laser, a Fronius MAG arc welding machine, and an ABB industrial robot were used for deposition.
2：Sample Selection and Data Sources:
Austenitic stainless steel AISI 316 was used as the substrate material, and 316L stainless steel wire of
3：8 mm diameter was the additive material. List of Experimental Equipment and Materials:
YLR-4000 S2 CW Fiber Laser, Fronius MAG arc welding machine, ABB industrial robot, 316L stainless steel wire, and AISI 316 stainless steel plates.
4：Experimental Procedures and Operational Workflow:
Single beads and block samples were deposited under optimized conditions. The macro morphologies, geometric characteristics, and microstructures were examined.
5：Data Analysis Methods:
Optical microscopy was used to investigate the macro morphology and microstructure of each sample.
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