Hydrogen in Materials Obtained Using of Additive Technologies

Abstract

Mechanical characteristics of constructional materials depend on the presence of structure defects. The accumulation of hydrogen inside constructional materials takes place during widely differing stages of metallurgical production. Presence of hydrogen in materials is always fraught with deep-seated hazard. Due to diffusion, accumulation of the critical concentrations in local areas is possible. Such accumulation leads to formation of flaws and brittle fracture. The paper deals with experimental data determination of hydrogen concentration in alloy 718. Using hydrogen analyzer AV-1, the hydrogen concentrations in a sample of an alloy of metallurgical production and obtained with the help of additive technologies were measured. The processes of hydrogen accumulation in alloy 718 at cathodic charging are also investigated.