Production Trial of a New Heat-Resistant Alloy with Low Density with Single-Crystal GTE Blade Casting


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Abstract

Under conditions of Klimov engineering enterprise, industrial results are obtained for the first time for developing casting technology for small single-crystal uncooled GTE turbine rotor blades of a new heatresistant alloy VZhM7 with reduced density and with a crystal orientation of <001>. Structural models are developed for blocks of blades with seeds and heat-resistant alloy melting and pouring in a unit for directional solidification. Test batches of blade castings are obtained with a yield of finished single-crystal structure of not less than 90% under VIAM pilot plant conditions, and 80% under conditions of Klimov engineering enterprise. The structure and phase properties are given for single-crystal blade material after casting, hot isostatic pressing, and subsequent heat treatment. Data are provided for fatigue tests on blades with crystal orientation <001>.

About the authors

E. M. Visik

State Research Center of the Russian Federation – All-Russia Research Institute of Aviation Materials (VIAM)

Author for correspondence.
Email: viamlab1@mail.ru
Russian Federation, Moscow

E. A. Tikhomirova

Klimov Company

Email: viamlab1@mail.ru
Russian Federation, St. Petersburg

N. V. Petrushin

State Research Center of the Russian Federation – All-Russia Research Institute of Aviation Materials (VIAM)

Email: viamlab1@mail.ru
Russian Federation, Moscow

O. G. Ospennikova

Klimov Company

Email: viamlab1@mail.ru
Russian Federation, St. Petersburg

V. V. Gerasimov

State Research Center of the Russian Federation – All-Russia Research Institute of Aviation Materials (VIAM)

Email: viamlab1@mail.ru
Russian Federation, Moscow

A. A. Zhivushkin

Klimov Company

Email: viamlab1@mail.ru
Russian Federation, St. Petersburg

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