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0222U003719,
0118U100513
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Investigation of the structure formation mechanism and development of methods for its optimization during welding and surfacing of elements from high-nickel structural materials
Yushchenko Kostiantyn A., Доктор технічних наук
25-05-2022
E.O.Paton Elektric Welding Institute National Academy of scinces of Ukraine
In order to obtain high-quality welded joints and seams, the regularities of structure formation under the action of the thermodeformation cycle of welding are established. New approaches to the classification of deposited metal from the point of view of assessing its tendency to form reheat cracks made by multilayer microplasma powder surfacing have been formed. They are based on the method of estimating the weld metal in the state immediately after surfacing, the maximum bending angle to crack, impact strength, the value of critical destructive deformation and characterize the course of the welding thermodeformation cycle. For the first time for the method of multilayer microplasma powder surfacing of nickel heat-resistant alloys, testing for the tendency to form reheat cracks on technological tests "Vertical wall", determined its thermo-deformation profiles in a three-dimensional coordinate system “yield strength - strength yield strength - tensile strength -strain”.Patent application filed.A new technological process and filler materials for the reaction-diffusion welding of difficult-to-weld heat-resistant nickel – based alloys, electrodes and flux-cored wires of small diameter for welding high-alloy steels implemented at “Yug-Spetsgidroenergo” LLC during repair of KRK hydroturbines have been developed.The technology of serial repair of microplasma powder surfacing of TVT blades, aviation gas turbine engine D18-T made from ZhS32VI alloy has been optimized and implemented at “Motor Sich” JSC.
Gakh Igor Sergijovych
Zaderiy Boris O
Zviahintseva Hanna V.
Kakhovskyi Mikola Yu.
Kakhovskyi Yurii М.
Kovalchuk Sergiy S.
Nesina Iryna V
Starovirova Natalya H
Fomakin Oleksandr O
Khervyakov Mykola O
Khervyakova Lyudmyla V
Yarovytsyn Oleksandr V.
2022-05-25
Updated: 2025-12-07
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