Experimental investigation of phase equilibria and microstructure in the Co-Ti-V ternary system

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

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Author(s)

  • J. J. Ruan
  • C. P. Wang
  • C. C. Zhao
  • S. Y. Yang
  • X. J. Liu

Detail(s)

Original languageEnglish
Pages (from-to)121-131
Journal / PublicationIntermetallics
Volume49
Online published22 Feb 2014
Publication statusPublished - Jun 2014
Externally publishedYes

Abstract

The phase equilibria in the Co-Ti-V ternary system have been investigated by means of optical microscopy (OM), electron probe microanalyzer (EPMA), differential scanning calorimetry (DSC), field emission scanning electron microscope (SEM) and X-ray diffraction (XRD). The mechanical properties were measured by compressive tests. Four isothermal sections of the Co-Ti-V ternary system at 800 C, 1000 C, 1100 C and 1200 C were experimentally established. The results show that: (1) there is no ternary compound in this system; (2) the CoTi2 phase and Co3Ti phase stabilized by the V addition; (3) a large solubility of Ti in the σ-Co2V3 phase was observed at all isothermal sections of 800 C, 1000 C, 1100 C and 1200 C; (4) The alloy with the distribution of fine cuboidal Co3Ti (L1 2) in (αCo) phase was observed. (5) The compressive strength of Co77.29Ti5.83V16.88 (at.%) alloy at room temperature was measured to be about 1985 MPa. The newly determined phase equilibria in this system will provide useful information for the development of Co-based and Ti-based materials. © 2014 Elsevier Ltd. All rights reserved.

Research Area(s)

  • A. Ternary alloy systems, B. Phase diagrams, D. Microstructure

Citation Format(s)

Experimental investigation of phase equilibria and microstructure in the Co-Ti-V ternary system. / Ruan, J. J.; Wang, C. P.; Zhao, C. C.; Yang, S. Y.; Yang, T.; Liu, X. J.

In: Intermetallics, Vol. 49, 06.2014, p. 121-131.

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