1：Experimental Design and Method Selection:

The study focuses on the use of fiber laser welding with filler material (wire or powder) for welding aluminum, titanium, and high-strength nickel alloys. The methodology includes optimizing laser and filler wire parameters to produce quality welds without cracking or porosity.

2：Sample Selection and Data Sources:

Samples include various thicknesses of aluminum alloys (6065, 6061), titanium alloy (Ti6Al4V), and nickel-based superalloys (Inconel 625, Inconel 718).

3：8). List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: Equipment includes a Laserdyne 795 with BeamDirector for welding, and materials include various diameters of filler wires (0.8 mm to 1.2 mm) for different alloys.

4：8 mm to 2 mm) for different alloys. Experimental Procedures and Operational Workflow:

4. Experimental Procedures and Operational Workflow: The process involves setting the wire feed rate, laser beam interaction with the filler wire, wire feed delivery angle, and focused spot size to achieve optimal welding results.

5：Data Analysis Methods:

Analysis includes evaluating weld geometry, porosity, cracking, and mechanical properties of the welds.