Effects of Nb content on the Zr2Fe intermetallic stability

With the aim of studying the stability range of the Zr2Fe intermetallic when adding Nb, the range of existence of the cubic ternary phase ( lambda 1) and the corresponding two-phase field between them, four samples were analyzed, each one containing 35 at.% Fe and different at.% Nb: 0.5, 4, 10 and 1...

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Bibliographic Details
Published in:Journal of nuclear materials 2003-02, Vol.312 (2-3), p.266-269
Main Authors: RAMOS, C, SARAGOVI, C, GRANOVSKY, M, ARIAS, D
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fission nuclear power plants
Installations for energy generation and conversion: thermal and electrical energy
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Summary:With the aim of studying the stability range of the Zr2Fe intermetallic when adding Nb, the range of existence of the cubic ternary phase ( lambda 1) and the corresponding two-phase field between them, four samples were analyzed, each one containing 35 at.% Fe and different at.% Nb: 0.5, 4, 10 and 15. Optical and scanning electron metallographies, X-ray diffraction, microprobe analysis and Mossbauer spectroscopy were performed to determine and characterize the phases present in the samples. Results show that the Zr2Fe compound accepts up to nearly 0.5 at.% Nb in solution, since the Zr2Fe+ lambda 1 region is stable in the (0.5--3.5) at.% Nb range. To summarize these results an 800 deg C section of the ternary Zr--Nb--Fe diagram, in the studied zone, was proposed.
ISSN:0022-3115
1873-4820
DOI:10.1016/S0022-3115(02)01677-X