Study of the textural evolution in Ti-rich NiTi using synchrotron radiation

João Paulo Heitor Godinho Canejo, Paula Andersan dos Santos, Karimbi Koosappa Mahesh, Rui Jorge Cordeiro Silva, Francisco Manuel Braz Fernandes, R. M.S. Martins, A.M.A. Cardoso, Norberth Schell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

24 Citations (Scopus)

Abstract

The aim of the present work is to investigate the textural evolution in high-temperature phase (austenite – B2) of Ti-rich NiTi (Ni–51at%Ti) shape memory alloys (SMA). The alloy was subjected to different thermomechanical treatments involving various heat treatments and cold rollings (10% and 40%). The qualitative texture analysis was performed at BM20 (ROBL-CRG) of the European Synchrotron Research Facility (ESRF) using in-situ high-temperature X-ray diffraction (XRD) with a wavelength of 0.154 nm. In-situ high-temperature texture determination has been carried out for the first time for Ni–Ti alloys, by annealing at different temperatures up to 800 C under a vacuum better than 104 Pa. The discussion highlights the evolution of texture during annealing at high temperatures and the change in the coherency domain size and microstrain.
Original languageEnglish
Title of host publicationSynchrotron Radiation and Materials Science
Pages206-210
Number of pages5
Volume246
DOIs
Publication statusPublished - May 2006
EventE-MRS Spring Meeting (Synchrotron Radiation and Materials Science) -
Duration: 1 Jan 2005 → …

Conference

ConferenceE-MRS Spring Meeting (Synchrotron Radiation and Materials Science)
Period1/01/05 → …

Keywords

  • Texture
  • Ti-rich NiTi
  • In-situ high-temperature XRD
  • Shape memory alloy
  • Synchrotron radiation

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