Ti-50at. %および52at. %Ni合金薄膜の形状記憶特性に及ぼす熱サイクルの影響 Effect of Thermal Cycling on the Shape Memory Characteristics of Ti-50at. % and 52at. %Ni Thin Films

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The stability of shape memory characteristics in thermal cycling was investigated for Ti-50at.%Ni and Ti-52at.%Ni thin films prepared by r. f. sputtering and annealed for 1h at 773K. The transformation temperatures measured by differential scanning calorimetry indicated less sensitivity to thermal cycling in the Ti-52at.%Ni film than in the Ti-50at.%Ni film. The stability of the shape memory effect was evaluated using a small tensile tester. Under a stress of 120MPa, 100 thermal cycles caused the martensitic and reverse martensitic transformation temperatures of the Ti-50at.%Ni film to decrease by 10 and 20K, respectively. However, the reverse martensitic transformation temperature of the Ti-52at.%Ni film remaind constant, and its martensitic transformation temperature decreased by 5K after the first 20 cycles but then remained constant owing to a training effect. The transformation strains of the films remained constant throughout the thermal cycling. Plastic strain was not observed in the Ti-52at.%Ni film, while in the Ti-50at.%Ni film it varied from 0.4% to 0.03% with thermal cycling. These results, showed that the Ti-52at.%Ni film had highly stable shape memory characteristics against thermal cycling.

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 47(3), 229-234, 1996-03

    The Surface Finishing Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002255849
  • 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
    3936735
  • 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  CJP引用  NDL  J-STAGE 
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