Abstract
Based on the use of calculation and analytical methods for forecasting phase and structural stability, the heat-resistant nickel alloy 3MI-M5 chemical composition has been developed. This alloy does not contain rhenium but contains an increased amount of tantalum and tungsten (8.5% at the average level) and is intended for manufacturing of cast working blades by the method of directional crystallization. Developed alloy after heat treatment under the regime foreseen for modern IV generation alloys provides a tensile strength above 1300 MPa with satisfactory ductility (more than 6.0%) at a temperature of 20 °C, as well as time to failure at a test temperature of 975 °C and a load of 300 MPa 60…90 h, which meets the requirements for the serial alloy ЖC32-BI and it is much less expensive.
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Milonin, E., Naumyk, V. (2024). Rhenium-Free Heat-Resistant Nickel Alloy for the Cast Blades Production. In: TMS 2024 153rd Annual Meeting & Exhibition Supplemental Proceedings. TMS 2024. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-50349-8_146
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DOI: https://doi.org/10.1007/978-3-031-50349-8_146
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