IEET-2016

Application of a New Device for Diagnosing the Degree of Structure Degradation of Details from Nickel-Based Superalloy

Rigmant, M., Kazantseva, N., Davidov, D., Shishkin, D., Scherbinin, V.

Abstract.The possibility of applying the magnetic methods of non-destructive testing discussed with regard to details from Nickel-based superalloys. The tests based of measurement of magnetic susceptibility performed with use of the new device with improved sensitivity. The severe deformation in turbine blade after exploitation led to the appearance of a strain-induced magnetism in initially para-magnetic alloy. The strain-induced magnetism associated with formation of ferromagnetic clusters inside of the particles of intermetallic phase. The obtained magnetic effect correlated with the dynamic stress level and the number of lattice defects in various parts of the blade.

Keywords:non-destructive test, magnetic properties, deformation, Nickel-based superalloy