Physical Properties of [Ni–(Mo/Cr)–Si]:[Ti/Nb] Bulk Metallic Glass Systems: A Comparison Study

Using a mechanical high-energy ball milling approach, we created Bulk Metallic Glass (BMG) matrices using the generic formula [Ni–(Mo/Cr)–Si]_100−x:[Ti/Nb]_x (x = 0–15 at.%). Based on its exceptional mechanical, thermal, structural, and corrosion qualities, the best sample is chosen for each series which are labeled as—NMST₆ ((Ni₇₅Mo₁₅Si₁₀)₉₄Ti₆), NMSNb₁₀ ((Ni₇₅Mo₁₅Si₁₀)₉₀Nb₁₀), NCST₈ ((Ni₇₅Cr₁₅Si₁₀)₉₂Ti₈) and NCSNb₆ ([Ni–Cr–Si]₉₄[Nb]₆). The findings showed that the optimal amounts of Ti/Nb content mixing in the current BMG network prevented embrittlement, solved strain cracking issues, avoided pitting, and enhanced corrosion resistance—all of which are critical for aerospace and lightweight vehicle applications. All of the targeted samples' variations in thermal (ΔT, T_rg), mechanical (σ_y, ε_p, hardness), and potentiometric (E_c, i_c, E_p, i_p) parameters may be described in terms of structural variation and glass-modifying characteristics brought about by the optimal substitution of Ti/Nb.