An ultra-high temperature bearing alloy and method of making same

Abstract

The application relates to an ultrahigh-temperature bearing alloy and a preparation method thereof. The ultrahigh-temperature bearing alloy provided by the application comprises the following chemical components in percentage by weight: C 0.02%-4.0%, Cr 16.0%-19.0%, Mo 30.0%-35.0%, Nb 30.0-34.0%, V 16.5%-18.5% and inevitable impurities; the microstructure of the ultrahigh-temperature bearing alloy is a high-mixing-entropy BCC crystal structure, and the BCC matrix is uniformly distributed with NbC and Nb / VC precipitated phases. The beneficial effect is that the high-temperature structural stability is ensured based on the entropy effect in thermodynamics, the high-temperature hardness and the high-temperature strength are improved through Nb / VC high carbide strengthening, and the material service performance requirements of high-temperature bearing under high temperature, such as stable microstructure, high hardness and high wear resistance, are met.

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