Effect of heat treatment atmosphere on multistage R-phase transformation in an aged Ti-51.0at%Ni alloy

Minoru Nishida, Kentarou Ishiuchi, Kousuke Fujishima, Toru Hara

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The present study systematically investigates the effect of heat treatment atmosphere on the multistage R-phase transformation (MRT) in an aged Ti-51.0 at%Ni alloy. No MRT occurs when the heat treatments were completed under the regulated atmosphere. On the other hand, the MRT is observed in the specimen heat treated under the unregulated atmosphere. It is apparent from transmission electron microscope observations that the first and the second transformations take place around the grain boundary and at the grain interior, respectively. We conclude that the MRT is extrinsic, and is an artifact during the heat treatment, rather than intrinsic in nature.

Original languageEnglish
Pages (from-to)645-649
Number of pages5
JournalMaterials Transactions
Volume47
Issue number3
DOIs
Publication statusPublished - Mar 1 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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