Specific features of deformation of the nitinol alloy after electrolytic hydrogenation.

摘要: Specific features of the effect hydrogenation on susceptibility a Ni–Ti alloy with shape memory to deformation are determined use metallographic, electrochemical, and mechanical studies. Three sections detected in tensile curves specimens nickel–titanium initial state. The first section is linear due elastic austenitic struc-ture. second nonlinear associated pseudoelastic structural transformations original structure into martensitic structure. third also caused by martensite formed course austenite. After hydro-genation alloy, transformation starts at somewhat lower level stresses than without hydrogenation. In this case, destroyed after termination for much plasticity nonhydrogenated alloy. It assumed that electrolytic promotes formation very brittle hydride phase surface Ti-type inclusions revealed Its thickness duration process rather current used hydro-genation.