1：Experimental Design and Method Selection:

Nd-YAG-pulsed laser welding technique was used for lap welding of 6061 Al and AMC with TiB2 particles. The welding process was discussed using an orthogonal test to optimize parameters.

2：Sample Selection and Data Sources:

AMCs were prepared using the in situ autogenous method. The size of the test specimens was 100 mm × 50 mm × 1 mm with 99.9% purity TiB2 particles.

3：9% purity TiB2 particles. List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: Nd-YAG-pulsed laser source (WF-300), Olympus GX51 optical microscope (OM), scanning electron microscopy (SEM) Zeiss EVO 18, energy-dispersive spectrometry (EDS), X-ray diffraction (XRD) Bruker APEX II DUO, CS350H electrochemical system.

4：Experimental Procedures and Operational Workflow:

Before welding, the oxide film on the surface of the specimen was removed and cleaned using acetone. After welding, the metallurgical sample was prepared and etched with HF solution. Microstructures were observed using OM and SEM. Chemical compositions were analyzed by EDS and XRD. Corrosion tests were conducted using a 5% NaCl solution with the CS350H electrochemical system.

5：Data Analysis Methods:

The results of the orthogonal test were analyzed to determine the optimal welding parameters. Microstructure and corrosion properties were analyzed based on OM, SEM, EDS, and XRD results.