Phase transformation of B2-PtTi with Ir

Y. Yamabe-Mitarai, T. Hara, H. Hosoda

Research output: Contribution to journalConference articlepeer-review

13 Citations (Scopus)

Abstract

To develop high temperature shape memory alloys, the effects of Iridium (Ir) on the constituent phases and the phase transformation temperature were investigated for PtTi intermetallic compound. Pt50-xIrxTi50 alloys with Ir contents between 0 and 37.5 at.% were prepared by arc melting method. The phase constitution and the phase transformation temperature were investigated by X-ray diffractometry (XRD), microstructure observation by an optical microscope, and differential thermal analysis (DTA). It was found that the B19 phase appeared up to 37.5at%Ir in Pt-Ir-Ti and the phase transformation temperature raised from 1303 K in PtTi to 1473 K in the Pt-37.5Ir-Ti.

Original languageEnglish
Pages (from-to)2267-2272
Number of pages6
JournalMaterials Science Forum
Volume426-432
Issue number3
DOIs
Publication statusPublished - 2003
EventThermec 2003 Processing and Manufacturing of Advanced Materials - Madrid, Spain
Duration: 2003 Jul 72003 Jul 11

Keywords

  • B19
  • B2
  • Martensitic transformation
  • PtTi

ASJC Scopus subject areas

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

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