Fabrication of dense Ti-Al-based alloy by spark plasma sintering

Xin Lu, Xin Bo He, Xuan Hui Qu, Shi Qiong Li

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Ti-Al alloys from prealloyed powder of Ti-47.5Al-2.5V-1.0Cr were prepared by spark plasma sintering (SPS). The results show that Ti-Al-based alloy with higher density and uniform microstructure is obtained by SPS at sintering temperature of 1100°C or above. However, the microstructures of the alloy change with the sintering temperature variation. While sintered at 1100°C and 1150°C, they consist of equiaxed (γ) and lamellar (α 2 +γ) grain; sintered at 1200°C, they are of fully lamellar microstructure. The alloys sintered at 1100°C with fine duplex microstructure exhibit better compressive properties at room temperature, with the compressive strength of 3321 MPa and the compression ratio of 35.2%.

Original languageEnglish
Pages (from-to)20-22
Number of pages3
JournalJinshu Rechuli/Heat Treatment of Metals
Volume32
Issue number2
Publication statusPublished - 2007 Feb 1
Externally publishedYes

Keywords

  • Mechanical properties
  • Microstructure
  • Spark plasma sintering (SPS)
  • Ti-Al-based alloy

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys

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