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Journal of Materials Science

, Volume 29, Issue 6, pp 1481–1486 | Cite as

Mechanically alloyed Ni50Ti50 and its transformation by thermal treatments

  • T. Itsukaichi
  • S. Ohura
  • J. G. Cabañas-Moreno
  • M. Umemoto
  • I. Okane
Papers

Abstract

Amorphous powders have been obtained by mechanical alloying (MA) equiatomic powder mixtures of nickel and titanium. The amorphous phase thus formed decomposes upon heating first into the cubic B2 NiTi intermetallic compound; however, further heating promotes the precipitation of the intermetallics Ni3Ti and NiTi2. These transformations are shown to occur also in mechanically ground (MG) NiTi wire, but not in this same material exempted from ball-milling processing. It is suggested that this unique behaviour is brought about by the particular structural features of the MA or MG powders, which promote the otherwise sluggish decomposition of B2 NiTi.

Keywords

Polymer Precipitation Titanium Nickel Structural Feature 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • T. Itsukaichi
    • 1
  • S. Ohura
    • 1
  • J. G. Cabañas-Moreno
    • 1
    • 2
  • M. Umemoto
    • 1
    • 2
  • I. Okane
    • 1
    • 2
  1. 1.Graduate SchoolToyohashi University of TechnologyAichiJapan
  2. 2.Department of Production Systems EngineeringToyohashi University of TechnologyAichiJapan

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