Abstract

Transformations of structure, phase composition, and mechanical properties of 45Cr26Ni33Si2Nb2 alloy during hightemperature (800-1100 °C) tests for longterm strength are investigated. The formation of the G phase of Ni 16 Si 7 Nb 6 was revealed, and the temperature range of its stability was determined. The cor� relation of strength properties with the formation of the G phase at intercrystalline boundaries is found.

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