+Advanced Search
Thermodynamic Databases of Nd-Fe-B-Dy quaternary Alloy Systems and Alloy Design
Author:
Affiliation:

Clc Number:

Fund Project:

Open Fund of State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization;National Natural Science Foundation of China(No.51771158)

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    The CALPHAD method was used to optimize and calculate the phase diagrams of Nd-Dy, Dy-B binary systems and Fe-B-Dy, Dy-Fe-Nd and B-Dy-Nd ternary systems. The thermodynamic databases of Nd-Fe-B-Dy quaternary alloys were established by the thermodynamic parameters of binary and ternary sub-systems reported in the literature and took into account the consistency of the thermodynamic models. The longitudinal cross-section phase diagrams of Nd-Fe-B-Dy quaternary alloy Nd16-xDyxFe77B7 (x≤5 at.%) were predicted by using these databases. At the same time, the variation of the fractions of each phase of the permanent magnet alloy with different Dy content under equilibrium solidification was analyzed. These results could be helpful for the microstructure design of the Dy-doped NdFeB permanent magnet alloy and the selection of the preparation process parameters.

    Reference
    Related
    Cited by
Get Citation

[wangcuiping, luyong, dengyuling, guoyihui, huangyixiong, chenmenghua, lizhou, liuxingjun, liuguozheng. Thermodynamic Databases of Nd-Fe-B-Dy quaternary Alloy Systems and Alloy Design[J]. Rare Metal Materials and Engineering,2020,49(9):3021~3029.]
DOI:10.12442/j. issn.1002-185X.20190463

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:May 29,2019
  • Revised:August 31,2019
  • Adopted:September 06,2019
  • Online: October 15,2020
  • Published: