Microstructure and tensile properties of investment cast Ti-46Al-8Nb-1B alloy

D. Hu, J. F. Mei, M. Wickins, R. A. Harding

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Abstract

The size of Nb-enriched TiB precipitates in the investment cast Ti-46Al-8Nb-1B was strongly affected by solidification conditions. The existence of long TiB ribbons was the cause of premature failure of this alloy at room temperature during tensile test. Refining TiB precipitates by fast cooling may improve the room temperature tensile ductility markedly.

Original languageEnglish
Pages (from-to)273-278
Number of pages6
JournalScripta Materialia
Volume47
Issue number4
DOIs
Publication statusPublished - 1 Aug 2002
Externally publishedYes

Keywords

  • Casting
  • Intermetallic
  • Mechanical properties
  • Microstructure
  • Titanium

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