Material treatment for reduced cutting energy and improved temperature capability of honeycomb seals

摘要

The present invention provides for a method to reduce the strength of the honeycomb (42) of a jet turbine stator (6), increasing its machinability, with a resultant reduction in measured peak tooth temperature, while maintaining or even improving its high temperature capability, so as not to limit its operating environment. The air seal functionality is unaffected, and even improved in some instances. The machinability of the honeycomb (42) is increased by using a light element diffused into the honeycomb ribbon to produce the effect of reducing its strength and ductility while maintaining the environmental resistance needed. The present invention also includes the stator honeycomb produced by the foregoing method.