Abstract
The impact of oxygen impurity on phase relationships in the Zr-Mo-Fe system (Zr > 30 at.%) at 1000 °C was investigated by means of x-ray diffraction, scanning electron microscopy, and energy-dispersive spectroscopy analysis. An oxygen-stabilized ternary compound γ-Zr2(Mo,Fe), derived from Ti2Ni type Zr4Fe2O, with cell parameter of a = 1.2213 nm was observed to be present in the investigated Zr-Mo-Fe alloys. The phase relationships of the Zr-Mo-Fe (O) system at 1000 °C in the Zr-rich corner consist of 3 four-phase regions, i.e., [βZr + λ-Zr(Mo,Fe)2 + γ-Zr2(Mo,Fe) + ZrMo2], [βZr + λ-Zr(Mo,Fe)2 + γ-Zr2(Mo,Fe) + Liquid], and [λ-Zr(Mo,Fe)2 + γ-Zr2(Mo,Fe) + Liquid + ZrFe2]. The previously detected Zr9Mo4Fe compound was not observed in this work.
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Acknowledgment
This project is supported by Guangxi Natural Science Foundation (Grant No. 2018GXNSFAA138043), Open Foundation of Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University (Grant No. GXYSOF1803), Guangxi Provincial Science and Technology (Grant No. 2020KY04026, 2022KY0150), Natural Science Foundation of Guangdong Province (2022A1515010919, 2023A1515012089), and the Special Projects of Universities in Guangdong Province in Key Areas (2022ZDZX3014).
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Ren, Y., Zhu, J., Liang, J. et al. Phase Relationship in the Zr-Mo-Fe(O) System (Zr > 30 at.%) at 1000 °C. J. Phase Equilib. Diffus. 44, 483–495 (2023). https://doi.org/10.1007/s11669-023-01052-0
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DOI: https://doi.org/10.1007/s11669-023-01052-0