Experimental investigations of microstructures and phase equilibria in the Co-V-Ta ternary system

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • J.J. Ruan
  • C.P. Wang
  • S.Y. Yang
  • T. Omori
  • Y. Kimura
  • X.J. Liu
  • R. Kainuma
  • K. Ishida

Detail(s)

Original languageEnglish
Pages (from-to)141-148
Journal / PublicationJournal of Alloys and Compounds
Volume664
Online published23 Dec 2015
Publication statusPublished - 15 Apr 2016
Externally publishedYes

Abstract

The microstructures and the phase equilibria of the equilibrated Co-V-Ta ternary alloys have been investigated. Moreover, four isothermal sections of the Co-V-Ta ternary system at 1300, 1200, 1100 and 900 °C are experimentally established. The corresponding results are summarized as follows: (1) the C14 phase with a large solubility of Co is observed both at 1300 and 1200 °C, while it forms a ternary single phase region at 1100 and 900 °C; (2) the C36 phase, containing a large solubility of V, is identified at 1300, 1200 and 1100 °C, while it exists as a ternary single phase region at 900 °C; (3) Co is in favor of stabilizing the C14 phase against lowerature, while V plays an analogous influence on the C36 phase; (4) the solubility of Ta in σ-Co2V3 phase decreases by a small amount as the temperature decreases from 1300 to 900 °C. In addition, the experimental information obtained in the present work is not only essential for the thermodynamic assessment of the Co-V-Ta ternary system, but also important for the development of the Co-base alloys.

Research Area(s)

  • Higherature alloys, Intermetallics, Microstructure, Phase diagrams, X-ray diffraction

Citation Format(s)

Experimental investigations of microstructures and phase equilibria in the Co-V-Ta ternary system. / Ruan, J.J.; Wang, C.P.; Yang, S.Y.; Omori, T.; Yang, T.; Kimura, Y.; Liu, X.J.; Kainuma, R.; Ishida, K.

In: Journal of Alloys and Compounds, Vol. 664, 15.04.2016, p. 141-148.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal