Phase relations in the Ni-Mn-Ga ternary system and aging effect on shape memory properties of ferromagnetic Ni2MnGa sputtered films

Makoto Ohtsuka, Christina Wedel, Kimio Itagaki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Isothermal sections of the Ni-Mn-Ga ternary phase diagram at 1073 and 1273 K were investigated over a wide range of alloy compositions. The range of the β-Ni2MnGa phase, its equilibria with the γ-(Mn, Ni), α′-Ni3Ga, and γ-Ni3Ga2 phases, and the liquidus and solidus lines were determined experimentally. The aging effect on the shape memory effect (SME) of Ni2MnGa sputtered films was also investigated. The two-way SME of the constraint-aged films was confirmed by the temperature change.

Original languageEnglish
Pages (from-to)1909-1914
Number of pages6
JournalMonatshefte fur Chemie
Volume136
Issue number11
DOIs
Publication statusPublished - 2005 Nov 1

Keywords

  • Ferromagnetic shape memory alloy
  • Nickel-manganese-gallium
  • Phase diagram
  • Shape memory effect

ASJC Scopus subject areas

  • Chemistry(all)

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