Thermodynamic re-assessment of the Mg–Gd binary system coupling the microstructure evolution during ageing process

Wu, Xiaofei; Li, Changrong; Zheng, Jianting; Ruan, Yongxin; Guo, Cuiping; Du, Zhenmin; Chen, Bin; Wu, Yujuan

doi:10.1016/j.calphad.2019.101712

Cited by 17 publications

(4 citation statements)

References 46 publications

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“…The three binary phase diagrams are accepted from Mg-Ce, [8] Mg-Gd [7,10] and Ce-Gd. [9] In the Ce-Gd phase diagram, a continuous A2 solution forms between (dCe) and (bGd) at higher temperatures.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Besides, a Sm-type d-(Ce,Gd) phase was reported to be stable below 720°C, having a small homogeneity range around 70 at.%. [17] The Mg-Ce [8] and Mg-Gd [7,10] phase diagrams show some similarity. For instance, the B2-type, C15-type and D0 3 -type compounds exist in both systems.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The complex cubic GdMg 5 phase stably exists in the Mg-rich region of the Mg-Gd system. [10] Three Mg-rich compounds were believed to be stable in the Mg-Ce system, [8] i.e. CeMg 12 , CeMg 10.3 and Ce 5 Mg 41 .…”

Section: Literature Reviewmentioning

confidence: 99%

“…Th phase diagrams of the binary systems Mg-Gd, Mg-Ce and Gd-Ce were critically assessed by Nayeb-Hashemi and Clark [7,8] and Gschneidner and Calderwood, [9] respectively. The former two systems (Mg-Gd and Mg-Ce) were thermodynamically evaluated by Wu et al [10] and Zhang et al, [11] respectively. It is worth mentioning that up to now, no experimental information on the Mg-Gd-Ce ternary phase diagran is available in the literature despite that the quaternary Mg-Ce-Gd-Y system was extrapolated thermodynamically by Gröbner and Schmid-Fetzer.…”

Section: Introductionmentioning

confidence: 99%

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Phase Equilibria of the Mg-Gd-Ce System at 500 °C

Zhou

Chen³

et al. 2021

J. Phase Equilib. Diffus.

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The phase equilibria of the Mg-Gd-Ce system at 500°C were investigated by means of the electron probe microanalysis (EPMA) and x-ray diffraction (XRD) on equilibrated alloys. The existence of the so-called normal tetragonal CeMg 12 (I) and long-range ordered CeMg 12 (II) was confirmed in the present work. The following five three-phase equilibria were well determined: ( 1) (Mg) ? CeMg 12 (-I) ? Ce 5 Mg 41 , (2) (Mg) ? Ce 5 Mg 41 ? GdMg 5 , (3) Ce 5-Mg 41 ? GdMg 5 ? (Ce,Gd)Mg 3 , (4) (Ce,Gd)Mg 3 ? GdMg 2 ? (Ce,Gd)Mg and (5) (Ce,Gd)Mg ? (dCe) ?(bCe). The solubility of Ce in GdMg 5 and in GdMg 2 was measured to be 7.8 and 8.7 at.% Ce, respectively. The solubility of Gd in CeMg 12 (I), in Ce 5 Mg 41 and in (dCe) were measured to be 1.0, 4.6 and 2.4 at.% Gd, respectively. Two continuous series of solid solutions form between GdMg 3 and CeMg 3 , and between GdMg and CeMg. The overall isothermal section at 500°C was constructed based on the present data with a few extrapolations.

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Section: Literature Reviewmentioning

confidence: 99%