Thermal, electrochemical and mechanical properties of shape memory alloy developed by a conventional processing route

  • T Ahmad
  • A.N. Malik
  • S.S. Raza
  • M Kamran
  • M.U. Manzoor
  • A Salman
  • F Hussain
  • F Riaz
  • R Ahmad
  • M.N. Akhtar
Keywords: Shape Memory Alloy, Microstructure, Mechanical Properties


A Cu based shape memory alloy (Cu-Al-Ni) having a composition 83% Cu, 14% Al, 3% Ni, was developed and studied to determine the shape memory effect. Powder of Cu, Al and Ni was melted in a pit furnace at about 15500C, and casted alloy was heat treated at 8500C for a period of 50 minutes followed by water quenching. Microstructure characterization of alloy (Cu-Al-Ni) was carried out to determine the pre-quenched (cast structure) and quenched martensitic structure. The microstructure analysis of developed samples showed needle like structure of quenched martensite after heat treatment. It has a very good resemblance with structure of casted shape memory alloy obtained from the vacuum induction process. The Vickers hardness test was also performed. Quenched microstructure with improved hardness than pre-quenched structure was observed.

Keywords: Shape Memory Alloy, Microstructure, Mechanical Properties


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eISSN: 1112-9867