TPWJ, 2019, #7, 29-35 pages
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue #7, 2019 (July)
Evaluation of short-term mechanical properties of a joint of difficult-to-weld nickel high-temperature alloys of ZhS6 type
K.A. Yushchenko, A.V. Yarovitsyn, N.O. Chervyakov, A.V. Zvyagintseva, I.R. Volosatov and G.D. Khrushchov
E.O. Paton Electric Welding Institute of the NAS of Ukraine
11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: firstname.lastname@example.org
A procedure was developed for evaluation of short-term mechanical properties of «base–deposited metal» welded joint of difficult-to-weld nickel high-temperature alloys of ZhS6 type at high-temperatures, simulating restoration of edges of blades of aircraft gas-turbine engines at their serial repair. The need of limiting reduction in comparison with acting reference documents of sizes of the welded billets and samples for mechanical tests was shown following the condition of providing the technological strength of such welded joint. The developed procedure was tested on servohydraulic machine MTS-810 during samples’ testing. It allowed making the grounds for selection of the modes of preliminary heat treatment in order to get optimum strength properties of deposited metal ZhS6K. 19 Ref., 4 Tables, 7 Figures.
Keywords: microplasma powder surfacing, GTE blades, repair of flange platforms, difficult-to-weld nickel alloy, welded joint, technological strength, sample preparation, mechanical properties, high temperature
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