Experimental determination of phase equilibria in the Ni-Hf-Si ternary system

C. P. Wang, J. F. Luo, J. J. Ruan, C. C. Zhao, S. Y. Yang, X. J. Liu

Research output: Contribution to journalArticlepeer-review

Abstract

The phase equilibria of the Ni-Hf-Si ternary system at 1000 C and 1100 C have been experimentally investigated by back-scattered electron (BSE), electron probe microanalyzer (EPMA) and X-ray diffraction (XRD) on the equilibrated alloys. In the present study, two isothermal sections were determined by a series alloys consisted of binary phases, ternary compounds or solid solutions. Four ternary compounds (τ1, τ2, τ3, τ4) were identified in these isothermal sections, and one new phase named τ9 (Ni9Hf19Si22) was firstly observed both at 1000 C and 1100 C. The newly determined phase equilibria in this system will provide useful information for the thermodynamic assessment and compositional design of Ni-based alloys.

Original languageEnglish
Pages (from-to)14-22
Number of pages9
JournalIntermetallics
Volume42
DOIs
Publication statusPublished - 2013
Externally publishedYes

Keywords

  • A. Ternary alloy systems
  • B. Phase diagrams
  • D. Microstructure
  • F. Electron microprobe

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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