Restoration and Thermal Stability Investigation of Intermetllic Phase in Exposed Nickel Base Superalloy Udimet 500 Turbine Blades

[摘要] The Udimet 500 nickel base superalloy blade exposed for 50000 hours in land base gas turbine working conditions faced the structure degradation. Six different heat treatments procedures have been applied (the blades were exposed at 900...

[学科分类] 金属与冶金

[关键词] nickel base superalloy;microstructure;heat treatment (HT);blade structure degradation