|About this Abstract
||Materials Science & Technology 2019
||Failure Analysis: Industry Specific Failures
||Failure of Polycrystalline CT Blade Fir Trees and the Role of Carbide Morphology
||William Carden, Amy Meyers Wells, Richard McSwain
|On-Site Speaker (Planned)
Aircraft turbine engines with low service hours have experienced unusual cracking in the fir tree of their replacement compressor turbine blades (CT blades). These CT blades were non-original equipment manufacturer parts (non-OEM). The failure location is unusual and can be an indication of inferior manufacturing, material properties, and processing. This study outlines the results and findings of the investigation. These include dimensional anomalies and microstructural features that have contributed to these failures. Also, presented will be other similar instances of failures and continuing investigation by other agencies.