Tailored microstructure control by AM as enabler for green hydrogen fueled gas turbines
Important results from the project
The proof-of-concept enabling defect-free fabrication of advanced Ni-base superalloys, using recent innovations in PBF-LB, was successfully reached. Based on extensive set of experiments, clear evidence of improved PBF-LB processability of advanced non-weldable Ni-base superalloys using both, laser shaping and pulsed laser, was obtained. Further potential for tailoring material composition and application of tailored post-AM heat treatment to reach defect-free components was demonstrated.
Expected long term effects
Advanced nickel-based superalloys have significant importance for increasing energy efficiency in aerospace and energy sector, enabling use of hydrogen and hydrogen-rich fuels. Hence, potential of producing complex-shape components from advanced non-weldable Ni-base superalloys using recent innovation in laser shaping and laser modulation technology, exploited in TILDA, is opening new era in AM not only for advanced Ni-base superlalloys, but also for other difficult-to-process materials.
Approach and implementation
TILDA project was based on comprehensive approach combining academic excellence and industrial know-how in tailored alloy design, PBF-LB and post-AM HIP process development, covering the full AM value chain. Project involved extensive utilization of novel processing by PBF-LB using laser shaping and development of tailored post-AM HIP, supported by extensive material characterization, resulting in successful PBF-LB processing of Alloy 247, not reported in the literature until now.
The text has been written by the project team. The content is copied from the funding agency’s website and has not been reviewed by the Program Office.