Modification of physical-mechanical properties of NiTi alloy by electron beam in surface melting mode

Abstract

This paper presents a research data on investigation of physical-mechanical properties of the surface of NiTi shape memory alloy after low-energy high-current pulsed electron beam (LEHCPEB) treatment in surface melting mode. Investigation of physical-mechanical and functional properties (Young's modulus E IT, dynamic hardness H IT, plasticity characteristic δH, and parameter of shape recovery ratio η) was held by method of instrumented nanoindentation test. Our data suggest that after LEHCPEB treatment physical-mechanical properties of the surface layers of ∼500 nm thickness change in depth from the surface without critical influence to the pseudoelastic properties of NiTi alloy.