Phase stability of β phase in TiAl intermetallics

Naoya Masahashi, Y. Mizuhara

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)

Abstract

The stability of the β phase in Cr-containing Ti-Al ternary alloys was investigated. Chromium was enriched in the α2 and β following heat treatment. Thermomechanical processing (TMP) resulted in the precipitation of a Cr-enriched β (B2) at grain boundaries. Upon subsequent heat treatment, the β phase transformed to α2+γ, accompanied by a lowering of the Cr enrichment in the α2. Thus, TMP followed by heat treatment is a minimum requirement for equilibration. The oxygen deteriorating room temperature deformability was confirmed to be located in the α2 but not in the β. Stabilization of the β phase was achieved by the addition of Group VIa elements.

Original languageEnglish
Pages165-172
Number of pages8
Publication statusPublished - 1995 Dec 1
Externally publishedYes
EventProceedings of the 1995 124th TMS Annual Meeting - Las Vegas, NV, USA
Duration: 1995 Feb 131995 Feb 16

Other

OtherProceedings of the 1995 124th TMS Annual Meeting
CityLas Vegas, NV, USA
Period95/2/1395/2/16

ASJC Scopus subject areas

  • Geology
  • Metals and Alloys

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