Phase equilibria of the Ti-Al-Nb system at 1300 °C

Shuai Xu*, Yong Xu, Yongfeng Liang, Xiangjun Xu, Shubo Gao, Yanli Wang, Jianping He, Junpin Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


Phase equilibria in the Ti-Al-Nb system at 1300 °C were studied using X-ray diffraction, scanning electron microscopy and electron probe microanalysis. Using the results, an isothermal section at 1300 °C for this system was constructed. No ternary compound was observed in this work. The isothermal section is characterized by four three-phase regions (α + β + γ, β + γ + σ, σ + δ + β and σ +γ + ε) plus the corresponding two-phase regions. The locations and areas of the tie-triangles are different from the previous results. The homogeneity range of α, γ, σ, δ and ε is located along a constant Al concentration.

Original languageEnglish
Pages (from-to)339-347
Number of pages9
JournalJournal of Alloys and Compounds
StatePublished - 2017
Externally publishedYes


  • Intermetallics
  • Microstructure
  • Phase diagram
  • TiAl alloy

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