Characterization of rapid-solidified shape memory TiNiCu alloy as an actuator/sensor material element

Shizuka Tamoto, Takeshi Yamahira, Yasubumi Furuya, Takehiko Segawa

Research output: Contribution to journalConference articlepeer-review


Ti50Ni50-xCux(x=0,5,10,15at%) fine fibers(diameter= φ 80 μm, length=20cm∼1m) were successfully developed by the arc-melted rapid-solidification method. It has been very difficult to do the conventional melt-work processing from the bulk material of this alloy to very fine fiber because of the brittleness from metallic compounds especially in the range of Cu≧8at%. The fibers showed good shape memory effect. As Cu content increased, the temperature hysteresis (ΔT=Af-Mf) of recovery strain-temperature curves as well as DSC curves became smaller and the tensile strength showed more than 1000MPa in Ti50Ni40Cu10at% fiber. Therefore, the developed rapid-solidified, thermoelastic fine fiber actuator/sensor materials have high potentially of applications for micro-machines and the fillers of smart composites.

Original languageEnglish
Pages (from-to)47-54
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2002 Dec 1
Externally publishedYes
EventTransducing Materials and Devices - Brugge, Belgium
Duration: 2002 Oct 302002 Nov 1


  • Fiber
  • Metallic actuator/sensor
  • Rapid-solidification
  • Shape memory alloy
  • Smart material systems
  • Thermoelastic phase transformation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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