Loading...

Effect of microstructure on rolling behavior of NiTi memory alloy

Sadrnezhaad, S. K ; Sharif University of Technology | 2008

645 Viewed
  1. Type of Document: Article
  2. DOI: 10.1080/10426910802316526
  3. Publisher: 2008
  4. Abstract:
  5. NiTi shape memory alloy (SMA) ingots were produced by vacuum induction melting/casting unit. The effect of microstructure on the hot (1000C) and cold (room temperature) rolling workability of cast samples was investigated. Microstructure of the cast samples was related to the type of crucible which used for melting and the average vacuum pressure of VIM furnace. Optical microscope, scanning electron microscope (SEM), and energy dispersive technology (EDS) methods were used to inspect the origins of observed cracks after rolling processes. The results showed that the formation of both Ti4Ni2O and TiC impurities formed due to inappropriate melting conditions had detrimental effects on workability of the cast specimens and caused failure in the hot and cold rolled alloys
  6. Keywords:
  7. Alloys ; Cold rolling ; Electron beam lithography ; Metal castings ; Metal cladding ; Metallic compounds ; Microscopes ; Microstructure ; Scanning electron microscopy ; Shape memory effect ; Titanium carbide ; Vacuum ; Vacuum furnaces ; Cracking ; Deformation ; Detrimental effects ; Energy dispersive ; Melting conditions ; Memory alloy ; Ni-Ti shape memory alloy ; NiTi ; Optical microscope ; Rolled alloys ; Rolling processes ; Room temperatures ; Scanning electron microscope ; SMA ; Ti4Ni2O ; TiC ; Vacuum induction ; Vacuum pressure ; VIM ; Workability ; Hot rolling
  8. Source: Materials and Manufacturing Processes ; Volume 23, Issue 7 , 26 August , 2008 , Pages 646-650 ; 10426914 (ISSN)
  9. URL: https://www.tandfonline.com/doi/abs/10.1080/10426910802316526