Microstructures and mechanical properties of TiAl-based alloys by spark plasma sintering

Xin Lu, Xinbo He, Shiqiong Li, Xuanhui Qu

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

TiAl based alloys from the prealloyed powder of Ti-47.5Al-2.5V-1.0Cr were prepared by spark plasma sintering (SPS), and the relationship among sintering temperature, microstructure and mechanical properties was studied. The results showed that the TiAl based-alloy with high density and uniform microstructure could be obtained by SPS. In addition, the microstructure changed with sintering temperature, as a result, the mechanical properties changed with the microstructure. The finer the microstructure was, the higher the strength and ductility at room temperature became. For specimens sintered at 1100°C, the finer duplex microstructure was achieved. The specimens exhibited better compressive properties at room temperature with a compressive strength of 3321 MPa and a compression ratio of 35.2%.

Original languageEnglish
Pages (from-to)254-257
Number of pages4
JournalBeijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing
Volume30
Issue number3
Publication statusPublished - 2008 Mar 1
Externally publishedYes

Keywords

  • Mechanical properties
  • Microstructure
  • Spark plasma sintering (SPS)
  • TiAl based alloy

ASJC Scopus subject areas

  • Engineering(all)

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