The Fe-Y (iron-yttrium) system

Zhang, W.; Liu, G.; Han, Kyu Won

doi:10.1007/bf02667560

Cited by 35 publications

(12 citation statements)

References 15 publications

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“…However, Gschneider [3] thought that the experimental technique employed by Domagala et al [5] did not justify drawing the liquidus as a solid line, and Kubuschewski [4] made minor revisions to phase stoichiometries to bring the diagram into accord with the results from more recent crystallographic studies. The latest assessment was carried out by Zhang et al [6]. In this one [6] [7] neither Gschneidner nor Kubaschewski accepted the existence of an equilibrium phase at a stoichiometry of YFe 5 , that was reported by Farkas and Bauer [8] and by Nassau et al [9].…”

Section: Fe-y Systemmentioning

confidence: 99%

“…The latest assessment was carried out by Zhang et al [6]. In this one [6] [7] neither Gschneidner nor Kubaschewski accepted the existence of an equilibrium phase at a stoichiometry of YFe 5 , that was reported by Farkas and Bauer [8] and by Nassau et al [9]. The reasons for rejection of that phase appear justified, and Taylor and Poldy [10] have been unable to find the phase.…”

Section: Fe-y Systemmentioning

confidence: 99%

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Thermodynamic assessments of the Fe-Y and Ni-Sc systems

Kardellass

Servant

Selhaoui

et al. 2013

MATEC Web of Conferences

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Abstract. The present study concerns the optimization of the Fe-Y and Ni-Sc systems by the help of the CALPHAD (CALculation of Phase Diagram) method, taking into account the available experimental results about phase equilibria and thermodynamic properties. The excess terms of the Gibbs energy of the solution phases (liquid, b.c.c., f.c.c. and h.c.p.) were assessed with the recent exponential temperature dependence of the interaction energies by Kaptay and compared with the linear dependence by Redlich-Kister. Furthermore, the computer program Thermo-Calc allows to obtain estimated data for experimentally undetermined thermodynamic properties and to compare the computed phase diagrams with those already published.

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Section: Fe-y Systemmentioning

confidence: 99%

Section: Fe-y Systemmentioning

confidence: 99%

Thermodynamic assessments of the Fe-Y and Ni-Sc systems

Kardellass

Servant

Selhaoui

et al. 2013

MATEC Web of Conferences

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“…[19,20] As the interface moves at these high speeds, thermodynamic equilibrium between liquid and solid phase compositions falters, and kinetic considerations dominate so that significant, elevated meta-stable concentrations of solute atoms can be ''trapped'' in solid solution. [18] In this study, the hypothesis is that the normally near zero room temperature solubility of Y in Fe [21] may be extended by melt spinning, and on subsequent heat treatment, the excess Y will precipitate and can simultaneously oxidize 'internally' to form a dispersion of Y-enriched oxides. Although melt spinning is also a batch process like MA, it is comparatively mature and has already been significantly scaled-up commercially and applied for the industrial production of amorphous ferromagnetic ribbons with a global capacity exceeding 100,000 t/ year.…”

Section: Ferritic Oxide Dispersion-strengthened (Ods)mentioning

confidence: 99%

Development of a Novel Melt Spinning-Based Processing Route for Oxide Dispersion-Strengthened Steels

Hong

Morrison

Zhang

et al. 2017

Metall Mater Trans A

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Melt spinning of an Fe-5Y and Fe-1Y-1Ti (wt pct) alloy produced a relatively uniform spatial distribution of Y and Ti in solid solution and ribbons with consistent yield (>60 pct by weight), fast processing time (< 10 seconds), good scalability (up to > 100 g feedstock material), and repeatability. Heat treatment in the presence of Fe 2 O 3 as an oxygen source (Rhines pack method) at 973 K validated the potential of forming < 20 nm Y-rich oxides in the Fe-5Y ribbons. Pulverized Fe-1Y-1Y ribbons were consolidated to bulk using the field-assisted sintering technique (FAST) incorporating nano-sized Fe 3 O 4 powder as the oxygen source. After FAST at 1273 K, 50 MPa, and 30 minutes, a comparatively high number density of sub-micron Y and/or Ti-rich oxides were developed. Further formation of fine-scale oxides took place during post-FAST annealing, resulting in an approximate 20 pct increase in hardness at temperatures below 573 K, but with a reduced hardening effect above 673 K due to a small fraction of persistent porosity and mechanically weak prior ribbon boundaries that were decorated with Ti-rich oxides.

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“…The Fe-Y system has been reviewed by Gschneidner [88] and Zhang et al [89] and assessed by Du et al, [90] Konar, [41] Lu et al [91] and Kardellass et al [92] The crystal structures of the intermetallic phases considered in the present assessment are tabulated in Table 1. The optimized thermodynamic and magnetic parameters of the solid and Fig.…”

Section: The Fe-y (Iron-yttrium) Systemmentioning

confidence: 99%

“…Oxygen amount of alloys in pre and post experiment was minimal, as determined by inert gas fusion-infrared absorptiometry. The KEMS measurements were carried out for the samples across the entire composition in the temperature range of 1473-1573 K. The ion currents for Y were determined with the help of 89 Y isotope. The more abundant 54 Fe and 56 Fe were chosen for Fe detection among the possible 54 Fe, 56 Fe, 57 Fe and 58 Fe isotopes.…”

Section: The Fe-y (Iron-yttrium) Systemmentioning

confidence: 99%

Critical Systematic Evaluation and Thermodynamic Optimization of the Fe-RE System: RE = Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y

Konar

Kim

Jung

2017

J. Phase Equilib. Diffus.

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As the second part of the thermodynamic study of binary Fe-RE system, critical evaluations and optimizations of all available phase diagrams and thermodynamic data for the Fe-heavy RE (heavy RE = Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y) systems were conducted to obtain reliable thermodynamic functions of all the phases in the systems. In the thermodynamic modeling of the heavy RE systems, systematic variations in the phase diagrams and thermodynamic properties such as the enthalpy of mixing in the liquid state and enthalpy of formation of solid compounds with the atomic number of lanthanide series were observed. These systematic trends were incorporated in the optimization of the Fe-heavy RE system to resolve inconsistencies between available experimental data and to estimate unknown thermodynamic properties. The systematic trends in thermodynamic properties of solid and liquid phases and phase diagram of the entire Fe-RE systems were summarized.

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The Fe-Y (iron-yttrium) system

Cited by 35 publications

References 15 publications

Thermodynamic assessments of the Fe-Y and Ni-Sc systems

Thermodynamic assessments of the Fe-Y and Ni-Sc systems

Development of a Novel Melt Spinning-Based Processing Route for Oxide Dispersion-Strengthened Steels

Critical Systematic Evaluation and Thermodynamic Optimization of the Fe-RE System: RE = Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y

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