1：Experimental Design and Method Selection:

Laser additive manufacturing (LAM) was used to fabricate Ti40Zr congruent alloy and four other Ti-Zr alloys near the congruent point on pure titanium substrate. The microstructure, mechanical properties, tribological properties, corrosion resistance, and formability were analyzed.

2：Sample Selection and Data Sources:

Pure titanium plate was used as substrate. Master alloys were prepared by arc-melting mixtures of high purity Ti and Zr.

3：List of Experimental Equipment and Materials:

A 5 KW continuous-wave CO2 laser unit, XRD-6000 X-ray diffraction, Zeiss Supra 55 SEM, EPMA-1720 electron probe microanalyzer, Tecnai G220 S-Twin TEM, DMH-2LS micro-hardness tester, Instron-type testing machine, CETR UMT-2 testing machine, M352 system for corrosion behavior evaluation.

4：Experimental Procedures and Operational Workflow:

Optimized laser processing parameters were used to prepare specimens. Microstructure observation, phase identification, mechanical testing, tribological testing, and corrosion resistance evaluation were performed.

5：Data Analysis Methods:

XRD for phase identification, SEM and EPMA for microstructure and composition analysis, TEM for precipitated phase investigation, EBSD for orientation analysis, hardness testing, compression testing, friction-wear testing, and corrosion behavior evaluation.