MATEC Web of Conferences (Jan 2019)

Large Dimension and Low-Cost Fe-SMA Rods

  • Ozcan Hande,
  • Ma Ji,
  • Schaffer Jeremy E.,
  • Karaman Ibrahim

DOI
https://doi.org/10.1051/matecconf/201927101005
Journal volume & issue
Vol. 271
p. 01005

Abstract

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The effects on sample size on abnormal grain growth in inexpensive FeMnAlNi shape memory alloy (SMAs) wires and rod were investigated. It was shown that repeated heat treatments between single phase (bcc) and two phase (bcc + fcc) region resulted in abnormal grains with bamboo structure both in small sized wires and large diameter rods. Microstructural features were investigated using electron backscatter diffraction (EBSD) and it was found that 0.5 mm wires possess strong [011] texture whereas, large diameter rods have random texture after grain growth heat treatments.