Thermodynamic re-assessment of the Fe-Gd and Fe-Sm binary systems

Chen, X.L.; Wang, J.; Chen, T.L.; Lin, Xiangcheng; Rong, Maohua; Rao, Guanghui; Zhou, Huaiying

doi:10.1016/j.calphad.2017.07.005

Cited by 28 publications

(1 citation statement)

References 42 publications

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“…Using thermodynamic calculations, the Scheil–Gulliver model can be employed to simulate the non-equilibrium solidification process of as-cast alloys [ 19 ]. In our previous work, the RE-Fe (RE = Pr, Nd, Sm, Gd, Dy, Tb, Ho, Tm, Lu, Y) [ 20 , 21 , 22 , 23 , 24 ], RE-B (RE = La, Ce, Pr, Nd, Sm, Gd, Dy, Tb, Ho, Tm, Lu, Y) [ 25 , 26 , 27 ], and RE 1 -RE 2 binary systems [ 28 ] were calculated, and then thermodynamic calculations of the RE 1 -RE 2 -Fe (e.g., La-Ce-Fe and Ce-Nd-Fe [ 29 ], La-Pr-Fe and Ce-Pr-Fe [ 30 ]) ternary systems and the Nd-Fe-B ternary system [ 31 ] were performed. Furthermore, the development of a thermodynamic database of Nd-Dy-Tb-Fe-B magnets is in progress in our group.…”

Section: Introductionmentioning

confidence: 99%

Solidification Behavior of Dy-Tb-Fe Alloys through Experimental Study and Thermodynamic Calculation

et al. 2023

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In this work, the solidification microstructure and phase transitions of Dy-Tb-Fe alloy samples were studied by using scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS), X-ray diffraction (XRD) and differential thermal analysis (DTA). No stable ternary compound was detected in the present experiments. The phase transformation temperatures of eight Dy-Tb-Fe alloy samples were measured. Based on the experimental results determined in this work and reported in the literature, the phase equilibria of the Dy-Tb-Fe system was calculated using the CALPHAD method. The calculated vertical sections are consistent with the experimental results determined in this work and reported in the literature. Furthermore, in combination with the experimental solidification microstructure, the solidification behavior of Dy-Tb-Fe alloy samples was analyzed through the thermodynamic calculation with the Gulliver–Scheil non-equilibrium model. The simulated results agree well with the experimental results. This indicates that the reasonable thermodynamic parameters of the Dy-Tb-Fe system were finally obtained.

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