Phase equilibrium and martensitic transformation in near equiatomic Ti‒Pd alloys

T. Yamamuro, Y. Morizono, J. Honjyo, M. Nishida

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18 Citations (Scopus)


The homogeneity range of the TiPd compound is experimentally determined from martensitic transformation behaviors of solution treated and aged specimens with various compositions and diffusion couple method, and then the phase diagram of Ti{single bond}Pd binary system in Ti side is reinvestigated. The phase boundary of TiPd compound on the Pd side is almost constant at about 50.5 at.% Pd. On the other hand, that on the Ti side extends from 50.6 at.% Ti at around 873 K to about 51.8 at.% Ti at 1073 K. From the diffusion couple experiments, it is recognized that there is an A2(bcc) to B2 order-disorder transformation around 30 at.% Pd instead of a β-Ti and TiPd duplex phase region. It is also confirmed that the Ti3Pd compound is formed by a peritectoid reaction between β-Ti and Ti2Pd. From these results, we propose a new phase diagram of the Ti{single bond}Pd binary system.

Original languageEnglish
Pages (from-to)327-331
Number of pages5
JournalMaterials Science and Engineering: A
Issue numberSPEC. ISS.
Publication statusPublished - Nov 25 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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