+Advanced Search
Thermodynamic Assessment of the Co-Nb-W System
DOI:
Author:
Affiliation:

Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, P.R. China,

Clc Number:

Fund Project:

National Natural Science Foundation of China (51571168); Ministry of Science and Technology of China (2014DFA53040); Nation Key Research and Development Program (2016YFB0701401)

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

    The thermodynamic assessment of the Co-Nb-W ternary system has been carried out by applying the CALPHAD method. A slight modification of the Co-W binary system has been performed to unify the model of μ phase in Co-Nb-W system. The three published isothermal sections at 1273, 1373 and 1473 K have been critically examined and used to optimize the model parameters. The solution phases, including αCo and BCC were modeled as substitutional solutions; the λ, χ, and Co3Nb phases have been assessed by using two-sublattice models. The Co7W6 and Co7Nb6 phases were described as (Co, Nb)1(Co, Nb, W)2(Co, Nb, W)4(Co)6. Calculated isothermal sections and vertical sections agreed well with the experimental data.

    Reference
    Related
    Cited by
Get Citation

[liuxingjun, niuzeming. Thermodynamic Assessment of the Co-Nb-W System[J]. Rare Metal Materials and Engineering,2018,47(10):2919~2926.]
DOI:[doi]

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:April 06,2017
  • Revised:June 14,2017
  • Adopted:June 26,2017
  • Online: November 08,2018
  • Published: