Microstructure at the interface of titanium carbide and nickel aluminides

Dian Hong Shen, Xing Fang Wu, Hua Lu, N. Froumin, M. Polak

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Microstructure at the interface of titanium carbide and nickel aluminides in the samples obtained by infiltration of molten Ni3Al alloy has studied by a scanning electron microscopy (SEM) and an analytical transmission electron microscopy (ATEM) with an energy dispersive spectrometer (EDS). It is found that the morphology at the interfaces between hard phase skeleton of TiC0.7 and metallic phases depends on the ratio of Ti/C in carbide. Some periodic zigzag fringes are observed at a smooth interface between metallic phase and carbides in the sample of Ni3Al/TiC0.7. The results of analysis using EDS show that Ti in TiC0.7 carbide is easier than that in TiC0.9 to dissolve into the molten alloy during solid-liquid reaction. The formation of this periodic zigzag fringe,which may be a growth zone of a new Ti-Ni-Al phase,in the interface of TiC0.7/Ni3Al would occur during the initial stage of solidification.

Original languageEnglish
Pages (from-to)528-531
Number of pages4
JournalChinese Physics
Volume9
Issue number7
DOIs
StatePublished - 1 Jul 2000

Keywords

  • Interface
  • Microstructure
  • Nickel aluminides
  • Titanium carbide

ASJC Scopus subject areas

  • Physics and Astronomy (all)

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