Oxygen gain and aluminum loss during laser metal deposition of intermetallic TiAl
| Autor: | Ulrike Hecht, Veronica Rocio Molina Ramirez, Jonas Zielinski, Silja-Katharina Rittinghaus |
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| Přispěvatelé: | Publica |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Structural material
Materials science phase transformation intermetallic Metallurgy Alloy microstructure Biomedical Engineering Intermetallic chemistry.chemical_element aero-engine component engineering.material Microstructure Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials chemistry Aluminium engineering Atomic ratio Particle size laser processing and cladding Instrumentation Titanium |
| Popis: | For manufacturing turbine parts for the aeronautical industry, lightweight structural materials like titanium aluminides are used. One well known example is the alloy Ti-43.5Al-4Nb-1Mo-0.1B (atomic percent) with the commercial name TNMTM. In previous studies, experiments on laser metal deposition of TiAl were performed to evaluate the potential of the technology to repair defective, damaged, or worn blades. Process conditions including post process heat treatment were successfully adjusted. However, oxygen pick-up is still a crucial aspect in laser based additive manufacturing of Ti- and TiAl-based alloys. In this work, approaches were made to analyze the oxygen pick-up as a function of processing parameters and the powder particle size. The results show that the build rate and the powder particle size affect the oxygen content in the consolidated material. |
| Databáze: | OpenAIRE |
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