Tailored microstructure control by AM as enabler for green hydrogen fueled gas turbines
| Reference number | |
| Coordinator | Chalmers Tekniska Högskola AB - Chalmers Tekniska Högskola Inst f Industri- & materialvetensk |
| Funding from Vinnova | SEK 975 104 |
| Project duration | October 2024 - June 2025 |
| Status | Completed |
| Venture | Impact Innovation Metals & Minerals - Program-specific efforts Vinnova |
| Call | Impact Innovation: Feasibility studies within Technological Action Areas in the program Metals & Minerals |
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.