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Microstructural stu...
Microstructural study of the NbC to G-phase transformation in HP-Nb alloys
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- Vaché, N. (författare)
- University Lyon, France; Total TRTG, France
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- Steyer, P. (författare)
- University Lyon, France
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- Duret-Thual, Claude (författare)
- RISE,Korrosion,University Lyon, France,Institut de la Corrosion
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- Perez, M. (författare)
- University Lyon, France
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- Douillard, T. (författare)
- University Lyon, France
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- Rauch, E. (författare)
- University Grenoble Alpes, France
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- Véron, M. (författare)
- University Grenoble Alpes, France
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- Renou, G. (författare)
- University Grenoble Alpes, France
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- Dupoiron, F. (författare)
- Total TRTG, France
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- Augustin, C. (författare)
- Total TRTG, France
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- Cazottes, S. (författare)
- University Lyon, France
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(creator_code:org_t)
- Elsevier B.V. 2020
- 2020
- Engelska.
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Ingår i: Materialia. - : Elsevier B.V.. - 2589-1529. ; 9
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The microstructure of a centrifugally cast HP alloy was studied in its as-received state and after ageing at 900 °C. A multi-scale approach combining X Ray Diffraction (XRD), advanced electron microscopy modes (scanning and transmission electron microscopies (SEM, TEM), together with focused ion beam/SEM nanotomography (FIB-nt)) has been carried out to characterize the evolution of niobium carbides during ageing. After thermal treatment, the carbides exhibit a complex microstructure, consisting of a core of untransformed NbC, an intermediate layer of G-phase (Ni16Nb6Si7) with embedded nanometric titanium carbide precipitates, and an outer shell of alternating chromium carbides Cr23C6 and G-phase. A simple diffusion model was used to explain the faster external growth of G-phase compared to the internal NbC dissolution, and to determine a diffusion coefficient of niobium in the G-phase at 900 °C.
Nyckelord
- Advanced material characterization
- Ageing
- G-phase
- HP-Nb alloy
- Microstructure
- NbC
- Carbides
- Chromium compounds
- Diffusion
- Ion beams
- Nickel compounds
- Niobium compounds
- Scanning electron microscopy
- Silicon compounds
- Titanium carbide
- Transmission electron microscopy
- Advanced materials
- Carbide precipitate
- Complex microstructures
- Multi-scale approaches
- Nb alloys
- Scanning and transmission electron microscopy
- Niobium alloys
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Till lärosätets databas
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Vaché, N.
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Steyer, P.
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Duret-Thual, Cla ...
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Perez, M.
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Douillard, T.
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Rauch, E.
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visa fler...
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Véron, M.
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Renou, G.
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Dupoiron, F.
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Augustin, C.
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Cazottes, S.
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visa färre...
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