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Multiscale Crack Regeneration – Application of Selective Single Crystal Repair Welding on High Pressure Turbine Blades (T23#)

Subject Area Materials in Sintering Processes and Generative Manufacturing Processes
Mechanical Properties of Metallic Materials and their Microstructural Origins
Thermodynamics and Kinetics as well as Properties of Phases and Microstructure of Materials
Term since 2023
Project identifier Deutsche Forschungsgemeinschaft (DFG) - Project number 119193472
 
The objective of this transfer project is the transfer of single-crystal (SX-) repair from subproject B5 to crack patterns, both in the oxidized and in the non-oxidized state, in use of an identical powder material. The crack patterns are multiscaled and artificially applied to the tips of high-pressure turbine blades and to high-pressure shrouds. In addition, the mentioned SX-repairs are mechanically characterized in a hot tensile test. With these two key areas of investigation, the SX repair is expanded to include new alloys, material conditions and components from flight operations without prior dissimilar repairs.
DFG Programme Collaborative Research Centres (Transfer Project)
 
 

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