Application of the technology of pulsed laser surface coating in correcting casting defects of parts made of «ЖС-32» alloy

Abstract

Production of casts of parts of gas turbine engines (GTE) is a complex and expensive process that requires a considerable amount of material resources. Various defects often occur in the manufacture of complex parts of gas turbine engines, defects that can be corrected in various ways. This paper describes a method of correcting defects in a cast alloy stator by pulsed laser cladding of stainless steel elements. After deseaming the unsound spots were reconstructed using a wire selected by matching its chemical composition with the basic material, annealing being used at different stages of surface coating. Annealing of the basic metal prior to deposition results in a two-fold increase of the transition area, the difference in the properties of the basic material and the cladding is maintained. If annealing takes place after cladding there is no clearly defined borderline between the basic materials and the steel deposited. Annealing and final hardening heat treatment is required after stainless steel is deposited on the nickel alloy.

About the authors

V. G. Smelov

Samara State Aerospace University

Author for correspondence.
Email: pdla_smelov@mail.ru

Candidate of Science (Engineering)

Assistant Professor of the Aircraft Engine Production Department

Russian Federation

A. V. Sotov

Samara State Aerospace University

Email: SotovAnton@yandex.ru

Post-graduate student, engineer of the Aircraft Engine Production Department

Russian Federation

A. V. Agapovichev

Samara State Aerospace University

Email: agapovichev5@mail.ru

Post-graduate student

Russian Federation

E. A. Nosova

Samara State Aerospace University

Email: eanosova@mail.ru

Candidate of Science (Engineering)

Assistant Professor of the Department of Technology of Metals and Aircraft Materials Science

Russian Federation

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