Nonequilibrium structural condition in the medical TiNi-based alloy surface layer treated by electron beam

Abstract

Abstract:The research is devoted to study the structural condition and their evolution from the surface to the depth of TiNi specimens treated by low-energy high-current electron beams with surface melting at a beam energy density E = 10 J/cm 2 , number of pulses N = 10, and pulse duration = 50 s. Determined thickness of the remelted layer, found that it has a layered structure in which each layer differs in phase composition and structural phase state. Refinement B2 phase lattice parameters in local areas showed the presence of strong inhomogeneous lattice strain.