A Nonconventional Method to Produce Zr Alloys to Study the Fe23Zr6 Intermetallic Compound in the Fe-Zr System

IF 1.5 4区材料科学 Q4 CHEMISTRY, PHYSICAL

Journal of Phase Equilibria and Diffusion Pub Date : 2024-11-13 DOI:10.1007/s11669-024-01167-y

M. R. Tolosa, P. Pedrazzini, G. Castellano, D. Arias, R. González, N. Nieva

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Abstract

A nonconventional method with an arc furnace was used to produce four binary alloys of Fe_79.3Zr_20.7 nominal atomic compositions with the aim of studying the Fe₂₃Zr₆ controversial intermetallic compound. The alloys were manufactured with raw materials with different degrees of purity. The existing phases were identified by x-ray diffraction, semi-quantitative microanalysis by means of a scanning electron microscope with an energy dispersive spectrometer attached, and quantitative microanalysis by using an electron microprobe with a wavelength dispersive spectrometer. The Fe₂₃Zr₆ phase, which until now has been observed in grains up to 20 µm in size in arc-furnace samples, was found in millimeter scales in the present work. Moreover, slow cooling of the alloys from the liquid state favors the formation of the Fe₂₃Zr₆ compound, regardless of the degree of purity of the heat-treated samples.

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研究 Fe-Zr 体系中 Fe23Zr6 金属间化合物的非常规 Zr 合金生产方法

为了研究Fe23Zr6有争议的金属间化合物，采用电弧炉的非常规方法制备了4种Fe79.3Zr20.7标称原子组成的二元合金。这些合金是用不同纯度的原料制成的。通过x射线衍射、扫描电镜（附能量色散谱仪）半定量微量分析和电子探针（附波长色散谱仪）定量微量分析鉴定了存在的相。到目前为止，在电弧炉样品中观察到的Fe23Zr6相的晶粒尺寸高达20 μ m，在本工作中发现了毫米尺度的Fe23Zr6相。此外，无论热处理样品的纯度如何，合金从液态缓慢冷却有利于Fe23Zr6化合物的形成。

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来源期刊

Journal of Phase Equilibria and Diffusion 工程技术-材料科学：综合

CiteScore

2.50

自引率

7.10%

发文量

审稿时长

1 months

期刊介绍： The most trusted journal for phase equilibria and thermodynamic research, ASM International''s Journal of Phase Equilibria and Diffusion features critical phase diagram evaluations on scientifically and industrially important alloy systems, authored by international experts. The Journal of Phase Equilibria and Diffusion is critically reviewed and contains basic and applied research results, a survey of current literature and other pertinent articles. The journal covers the significance of diagrams as well as new research techniques, equipment, data evaluation, nomenclature, presentation and other aspects of phase diagram preparation and use. Content includes information on phenomena such as kinetic control of equilibrium, coherency effects, impurity effects, and thermodynamic and crystallographic characteristics. The journal updates systems previously published in the Bulletin of Alloy Phase Diagrams as new data are discovered.