Diffusion Effects on Transformation and Deformation Behavior in Copper-Based Shape Memory Alloys

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Experimental mesoscopic observations of the parent phase in Cu-based shape memory alloys, the associated martensitic transformation and the corresponding hysteresis cycle, are carried out. The coexistence effects between martensite and parent phase and the evolution of the transformation temperature (<I>Ms</I>), due to yearly effect on the parent phase, are determined. Several years of continuous measurements, mainly using Cu–Zn–Al alloys, establish: (A) The evolution of the transformation temperature with time and temperature in parent phase (amplitude close to 15% of the ambient temperature change). (B) The changes related with the coexistence among the phases (close to 5 K). (C) The existence of remnant after quench effects are also partially visualized via neutron diffraction. A model based on the experimental results describes the hysteresis cycle and the internal loops. The diffusion effects can be included in the model and the time evolution of <I>Ms</I> and of the hysteretic behavior can be well established. The simulated results allow predicting the damping performance of the material for long-term actions.

収録刊行物

  • Materials transactions

    Materials transactions 43(5), 926-932, 2002-05-01

    公益社団法人 日本金属学会

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各種コード

  • NII論文ID(NAID)
    10012323069
  • NII書誌ID(NCID)
    AA1151294X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13459678
  • NDL 記事登録ID
    6179791
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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