Ti-Niスパッタ膜の超弾性 Superelasticity of Sputter-Deposited Ti-Ni Thin Films

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著者

    • 佐藤 守夫 SATO Morio
    • 独立行政法人物質・材料研究機構材料研究所 Materals Engineering Laboratory, National Institute for Materials Science
    • 石田 章 ISHIDA Akira
    • 独立行政法人物質・材料研究機構材料研究所 Materals Engineering Laboratory, National Institute for Materials Science

抄録

The superelasticity of Ti-48.3, 50.0 and 51.5 at% Ni thin films was evaluated by measuring the stress-strain curves on loading and unloading. It was found that perfect superelasticity is obtainable above the reverse R phase transformation finish temperature for both the Ti-48.3 at% Ni and Ti-51.5 at% Ni thin films, while the Ti-50.0 at% Ni thin film does not show perfect superelasticity. The Ti-50.0 at% Ni thin film was found to be susceptible to plastic deformation because of a single phase. This plastic strain hinders the perfect shape recovery after unloading. In contrast, in the Ti-48.3 at% Ni thin film, crystallization from the amorphous state produces fine distribution of coherent Guinier-Preston zones. These precipitates are considered to impede plastic deformation during stress-induced martensitic transformation, resulting in a perfect shape recovery after unloading, that is, a perfect superelasticity. On the other hand, in the Ti-51.5 at% Ni thin film subjected to solution and aging treatments, fine distribution of Ti<sub>3</sub>Ni<sub>4</sub> was observed and this fine precipitate is considered to be responsible for perfect superelasticity by suppression of plastic deformation.

収録刊行物

  • 表面技術 = The Journal of the Surface Finishing Society of Japan

    表面技術 = The Journal of the Surface Finishing Society of Japan 53(4), 267-272, 2002-04-01

    The Surface Finishing Society of Japan

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各種コード

  • NII論文ID(NAID)
    10008222365
  • NII書誌ID(NCID)
    AN1005202X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09151869
  • NDL 記事登録ID
    6144068
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-291
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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