Development of Nano Processing Technology for Shape Memory Alloy Fibers

Abstract

The effect of processing conditions on the preparation of nano NiTi SMA (shape memory alloys) fibers were examined in this study. Firstly, of alumina were prepared The holes in the nano porous membranes were 200nm in diameter. 50.3%Ni-Ti alloy was sputtered on the membrane, and columnar crystals having the diameter close to the holes were grown. The columnar crystals were broken into pieces by ultrasonic waves. The martensitic transformation was confirmed to occur in the disintegrated nano crystals of the SMA. DSC curves show that the martensite transformation temperatures and latent heat of the nano crystals are equal to those of the bulk state 50.3%Ni-Ti alloy.

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Document Details

Document Type
Technical Report
Publication Date
Jan 30, 2011
Accession Number
ADA536523

Entities

People

  • Hiroyuki Kato

Organizations

  • Hokkaido University

Tags

DTIC Thesaurus Topics

  • Alloys
  • Composite Materials
  • Crystals
  • Diameters
  • Electron Microscopes
  • Films
  • Heat Energy
  • Latent Heat
  • Martensite
  • Materials
  • Membranes
  • Shape Memory Alloys
  • Sputtering
  • Thin Films
  • Ultrasounds
  • Waves
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Metallurgy
  • Nanofabrication and Microfabrication.