MoSiBTi by powder metallurgy
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
The molybdenum silicon boron, MoSiB, material system is considered as a promising candidate to be able to increase exhaust temperature and thereby efficiency in aero and industrial gas turbines. In the MoSiB system, the Berczik triangle has been established to describe a three-phase field to form tough and strong high temperature materials. However, adding titanium may lead to a different phase field favoring the formation of the Mo5Si3 phase over Mo3Si phase promising better creep resistance and oxidation resistance. Additionally, Ti5Si3 precipitates may increase the ductility of the alloy by reducing the silicon content in the molybdenum solid solution and at the grain boundaries. Synthesizing the material by powder metallurgy offers both new prospects and challenges towards phase formation. A thermodynamic equilibrium state, like for example a chemical homogeneous melt is never reached. In contrast local diffusion couples and the resulting phase transformations define the microstructure of the alloy.
Details
Original language | English |
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Article number | 106127 |
Journal | International Journal of Refractory Metals and Hard Materials |
Volume | 112 |
Publication status | Published - 24 Jan 2023 |
Peer-reviewed | Yes |
External IDs
Scopus | 85146894460 |
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Keywords
ASJC Scopus subject areas
Keywords
- HIP, MoSiB, Powder metallurgy, Refractory metals