Transformation behavior of Ti50-x/2Ni50-x/2Cux alloys

J. Wang, W. Jin, M. Z. Cao, R. Yang

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Phase transformation behavior of Ti50-x/2Ni50-x/2Cux(x=2, 5, 15) alloys was investigated using differential scanning calorimetry (DSC). The results show that Ti50-x/2Ni50-x/2Cux alloys undergo a two-stage martensitic transformation on cooling and transform reversely in one stage on heating when treated at 823 K for 5 hours. Heat treatment has no effect on the transformation behavior of Ti49Ni49Cu2 alloy but does influence that of Ti47.5Ni47.5Cu5 alloy and Ti42.5Ni42.5Cu15 alloy. Effect of heat treatment is related with precipitation of CuNiTi phase. The maximum recoverable elongation of Ti49Ni49Cu2 wire is about 6%.

Original languageEnglish
Pages (from-to)391-396
Number of pages6
JournalActa Metallurgica Sinica (English Letters)
Volume19
Issue number6
DOIs
StatePublished - Dec 2006
Externally publishedYes

Keywords

  • Microstructure
  • Shape memory
  • Ti-Ni-Cu
  • Transformation

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