News

Specialists of the All-Russian Scientific Research Institute of Aviation Materials (VIAM) have developed a new nickel-based casting heat-resistant alloy VZhM200. This alloy is designed for casting of rotating blades with directional structure of PD-8 engine’s low-pressure turbine for Sukhoi Superjet 100 and Be-200 airplanes. At present the general qualification of this alloy has been performed as well as its batch production has been launched.   

VZhM200 alloy has stably high level of mechanical properties and long-term strength due to formation of a directional structure by means of directed crystallization during casting of the blanks. The quality of VZhM200 alloy in stability of its chemical composition, level of impurities, gases and mechanical properties meets the foreign analog alloys from the leading global manufacturers – Cannon Muskegon Corporation (USA) and HOWMET LTD (Great Britain).  

At present the pilot batches of the cast rod stocks made of this alloy have been provided to the JSC “UEC Saturn” in order to test them during casting of rotating blades of PD-8 engine’s low-pressure turbine.

It is necessary to mention that VIAM is the chief developer of nickel-based casting super alloys in the Russian Federation. A number of alloys developed in the Institute in Soviet period (ZhS6U, ZhS32, VZhL12U, etc.) are at present much-in-demand in production of new engines for modern aircraft engineering.

To this date the VIAM specialists are actively working on the development of the newest alloys for aviation industry. For instance, the development of carbon-free single crystal heat-resistant and intermetallide nickel-based alloys allowed increasing the operating temperature of a gas before the turbine in PD-14 engine for MS-21 aircraft. At the moment VIAM is developing new nickel-based super alloys with elevated content of rhenium, rhutenium and tantalum and high complex of mechanical and heat-resistant properties for 1200^oC operating temperature for application in high-thrust engine PD-35.