Investigation of Transformations of Structure, Phase Composition,and Mechanical Properties of 45Cr26Ni33Si2Nb2 Alloy during High-Temperature Test for Long-Term Strength of Metal of a Centrifugal Casting Pipe

摘要

Transformations of structure, phase composition, and mechanical properties of 45Cr26Ni33Si2Nb2 alloy during high-temperature (800-1100℃) tests for long-term strength are investigated. The formation of the G phase of Ni_(16)Si_7Nb_6 was revealed, and the temperature range of its stability was determined. The correlation of strength properties with the formation of the G phase at intercrystalline boundaries is found.