Electric resistance variation of NiTi shape memory alloy wires in thermomechanical tests: Experiments and simulation

Václav Novák, Petr Sittner, Gidnahalli Narayana Reddy Dayananda, Francisco Manuel Braz Fernandes, Karimbi Koosappa Mahesh

Research output: Contribution to journalArticlepeer-review

80 Citations (Scopus)

Abstract

Evolution of the electrical resistivity during thermal and mechanical tests of NiTi wires showing R-phase transformation was investigated by experiments and micromechanical model simulations considering B2-R-B19 transformations. Since reasonable agreement between the simulated and experimental mechanical and electrical resistivity responses was achieved, the apparently curious behavior of electrical resistivity could be rationalized through the model simulations in terms of the activity of multiple transformation and deformation processes taking place in the activated NiTi wires.
Original languageEnglish
Pages (from-to)127-133
Number of pages7
JournalMaterials Science And Engineering A-Structural Materials Properties Microst
Volume481
Issue numberNA
DOIs
Publication statusPublished - 25 May 2008

Keywords

  • NiTi
  • Thermomechanical tests
  • Electric resistance
  • Wires

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