This study investigates the defects in TA15 (Ti-6.5Al-2Zr-Mo-V) components produced by selective laser melting (SLM). TA15 samples were fabricated using varying laser powers and scanning speeds to examine the influence of volume energy density on pore and crack formation. The microscopic morphology of pores at different energy densities was analyzed, and the relationship between energy density and mechanical properties was determined through fracture morphology analysis. Results indicate that specimen density and mechanical properties initially increase with volume energy density before decreasing. The highest relative density (≥99.9%) for SLM-fabricated TA15 specimens was achieved at 100125 J/cm³, corresponding to a tensile strength of 1 189 MPa±22 MPa, yield strength of 871.22 MPa±18 MPa, and elongation of 7.42%±1.2%. At volume energy densities ≤ 100 J/cm³, interconnected small pores form regional irregular pore chains, negatively affecting mechanical properties. Above 125 J/cm³, pores are independently scattered and spherical, suggesting that pore reduction enhances the mechanical properties of SLM-produced TA15 parts, broadening their application potential.