A. Banik, Special Metals, Princeton, KY
Improvements in powder metal processing are facilitating the introduction of new technologies for the production of turbine engine components. The improved chemistry controls of powder metal alloys reduce the variability in property response encountered in ingot metallurgy products. Advanced powder metal alloys are being characterized which utilize this characteristic to provide an improved balance in tensile and creep capability. Through improved process control with powder production practices, lower cost powder metal processing routes are being investigated for the production of small and large components. In addition, novel approaches to heat treatment are being considered to take advantage of the improved chemistry uniformity of the powder process and provide microstructures tailored for the property demands of individual locations within the disk configuration. The recent advances in powder metal disk production will be reviewed in light of new alloy considerations for advanced high temperature applications.
Summary: Improvements in powder metal processing are facilitating the introduction of new technologies for the production of turbine engine components. The improved chemistry controls of powder metal alloys reduce the variability in property response encountered in ingot metallurgy products. The recent advances in powder metal disk production will be reviewed in light of new alloy considerations for advanced high temperature applications.