Physical-Mechanical Properties of the Ti–Ni–Nb–Si-Based Surface Alloy Synthesized on the TiNi Substrate by the Electron-Beam Method

The physical-mechanical properties of the Ti–Ni–Nb–Si-based surface alloy formed on the TiNi substrate using the electron-beam synthesis have been studied. The surface alloy has ~2 times higher values of the microhardness and elastic modulus than the TiNi-substrate. On the contrary, the values of the elastic-plastic parameters are close to those of the substrate. It was found that at a depth of ≤250 nm, the deformation behavior and physical-mechanical properties of the surface alloy differ due to the heterogeneity of the surface alloy structure.