Avtomaticheskaya Svarka (Automatic Welding), № 7, 2019 г., с.38-45
Peculiarities of 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, G. D. Khrushchov
E. O. Paton Electric Welding Institute of the NAS of Ukraine.
11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: email@example.com
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 welded billets and samples for mechanical tests was shown following the condition to provide technological strength of such welded joint. The developed procedure was tested on servohudraulic machine MTS-810 during samples’ testing. It allowed making ground for selection of the modes of preliminary heat treatment in order to get optimum strength properties of deposited metal ZhS6K. 19 Ref., 4 Tabl., 7 Fig.
Keywords: microplasma powder surfacing, GTE blades, repair of shrouds, difficult-to-weld nickel alloy, welded joint, technological strength, sample preparation, short-term mechanical properties, high temperature
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