2113 転位の可逆運動を利用したFe-Al系形状記憶合金の擬弾性挙動(S06-3 形状記憶合金の特性と応用技術(3),S06 形状記憶合金の特性と応用技術)

• 安田 弘行

  阪大

• 河村 勇樹

  阪大院

• 馬越 佑吉

  阪大

書誌事項

タイトル別名

• 2113 Pseudoelastic Behavior Based on Reversible motion of Dislocations in Fe-Al Shape Memory Alloys

抄録

Giant pseudoelasticity of Fe_3Al crystals at room temperature was investigated. Fe-23.0at.%Al single crystals slowly cooled to room temperature at 80K/h demonstrated a recoverable strain of 5%. Moreover, Fe_3Al single crystals isothermally annealed in the D0_3 single phase region showed large pseudoelasticity, compared with that in the bcc or B2 phase regions. Reversible motion of 1/4<111> superpartial dislocations dragging antiphase boundaries led to large pseudoelasticity in Fe_3Al single crystals. It was also found that pseudoelastic behavior of Fe_3Al single crystals was closely related to the ordered domain structure developed in the D0_3 structure. Fe-23.0at.%Al polycrystals showed smaller recovery ratio than the single crystals. Moreover, the recovery ratio of the polycrystals increased with increasing grain size, suggesting that the grain boundaries suppressed the reversible motion of dislocations.

収録刊行物

• 年次大会講演論文集

  年次大会講演論文集 2007.1 (0), 163-164, 2007

  一般社団法人 日本機械学会

キーワード

• Pseudoelasticity
• iron aluminides
• dislocations
• intermetallic compounds

詳細情報

• CRID: 1390282681042061440
• NII論文ID: 110007086051
• DOI: 10.1299/jsmemecjo.2007.1.0_163
• ISSN: 24331325
• Web Site: https://www.jstage.jst.go.jp/article/jsmemecjo/2007.1/0/2007.1_163/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可