Effect of electroplastic rolling on the ductility and superelasticity of TiNi shape memory alloy

R. F. Zhu, G. Y. Tang, San-Qiang Shi, Mingwang Fu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

40 Citations (Scopus)

Abstract

The brittle TiNi shape memory alloy strips were processed by electroplastic rolling (EPR) without intermediate annealing. The maximum thickness reduction of the alloy strip in the individual EPR pass can be 21.6% and the total deformation in terms of thickness reduction can reach 74% in the seven passes of EPR processing. The ductility of the TiNi alloy is enhanced by electropulse due to the dynamic recrystallization in the process. The rolling separating force in EPR drops compared to the cold rolling. Furthermore, the EPR processed TiNi after annealing exhibits an excellent superelasticity and the recoverable strain of 6% is obtained.
Original languageEnglish
Pages (from-to)606-611
Number of pages6
JournalMaterials and Design
Volume44
DOIs
Publication statusPublished - 1 Jan 2013

Keywords

  • Ductility
  • Electroplastic rolling
  • Shape memory alloy
  • Superelasticity

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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