Phase Relationship in the Zr-Mo-Fe(O) System (Zr > 30 at.%) at 1000 °C.

Authors :: Ren, Yule
Zhu, Jinming
Liang, Jianlie
Ling, Jinfeng
Li, Guangfeng
Qin, Wen
Fang, Liyang
Cui, Xuehong
Fu, Yuechun
Tang, Yiyuan
Source :: Journal of Phase Equilibria & Diffusion; Jun2023, Vol. 44 Issue 3, p483-495, 13p
Publication Year :: 2023
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-Zr<subscript>2</subscript>(Mo,Fe), derived from Ti<subscript>2</subscript>Ni type Zr<subscript>4</subscript>Fe<subscript>2</subscript>O, 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)<subscript>2</subscript> + γ-Zr<subscript>2</subscript>(Mo,Fe) + ZrMo<subscript>2</subscript>], [βZr + λ-Zr(Mo,Fe)<subscript>2</subscript> + γ-Zr<subscript>2</subscript>(Mo,Fe) + Liquid], and [λ-Zr(Mo,Fe)<subscript>2</subscript> + γ-Zr<subscript>2</subscript>(Mo,Fe) + Liquid + ZrFe<subscript>2</subscript>]. The previously detected Zr<subscript>9</subscript>Mo<subscript>4</subscript>Fe compound was not observed in this work. [ABSTRACT FROM AUTHOR]