PREDICTING THE OPERATIONAL CHARACTERISTICS OF TURBINE COMPRESSOR BLADES ON THE BASIS OF HIGH-SPEED IMPACT TESTING

摘要

Some properties of EI961 steel blades with a TiN coating in the initial state, after operation, and after regulated impact tests are compared. Despite the difference in the structural transformations in the coating, the operational changes in the endurance, wear resistance, residual microstress, microhardness, and TiN lattice period may be relatively accurately predicted after impact testing at approx 10~4 m/sec~2.