Phase Transition from BCC Phase in Fe-Mn-based Alloys with Anomalously Small Entropy Change

• Project/Area Number: 23686097
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Structural/Functional materials
• Research Institution: Tohoku University
• Principal Investigator: OMORI Toshihiro 東北大学, 工学(系)研究科(研究院), 助教 (60451530)
• Project Period (FY): 2011-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥27,820,000 (Direct Cost: ¥21,400,000、Indirect Cost: ¥6,420,000); Fiscal Year 2013: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000); Fiscal Year 2012: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000); Fiscal Year 2011: ¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
• Keywords: マルテンサイト変態 / 鉄合金 / 超弾性 / 形状記憶 / 形状記憶合金 / 析出 / 結晶粒径 / エントロピー

Research Abstract

The martensitic transformation from the alpha phase (BCC) to the gamma phase (FCC) in Fe-based alloys including Fe-Mn-Al-based alloy was investigated. It was found from the thermodynamic analysis that this phase transformation can occur due to the suppression of the magnetism of the alpha phase. It was also found that the thermoelastic transformation is obtained by the addition of Ni. Moreover, the Fe-Mn-Al-Ni alloy exhibits the superelasticity in a wide temperature range. The superelastic strain was strongly dependent on the microstructure and the grain size control was one of the most important factors.

Research Products

• [Journal Article] Effect of grain size on superelasticity in Fe-Mn-Al-Ni shape memory alloy wire (2013)
  • Author(s): T. Omori, M. Okano, R. Kainuma
  • Journal Title: APL MATERIALS Volume: 1 Issue: 3 Pages: 32103-32103
  • DOI: 10.1063/1.4820429
  • Peer Reviewed
• [Journal Article] Magnetotransport Properties of Fe_<48>Mn_<24>Ga_<28> Heusler Alloys (2013)
  • Author(s): V. V. Khovaylo, T. Omori, K. Endo, X. Xu, R. Kainuma, A. P. Kazakov, V. N. Prudnikov, E. A. Gan'shina, A. I. Novikov, Yu. O. Mikhailovsky, D. E. Mettus, A. B. Granovsky
  • Journal Title: Physical Review Volume: B 87 Issue: 17 Pages: 174410-174410
  • DOI: 10.1103/physrevb.87.174410
  • Peer Reviewed
• [Journal Article] Temperature-induced martensite in magnetic shape memory Fe2MnGa observed by photoemission electron microscopy (2012)
  • Author(s): C.A. Jenkins, A. Scholl, R.Kainuma, H. J. Elmers, and T, Omori
  • Journal Title: App. Phys. Letters Volume: 100 Issue: 3 Pages: 32401-32401
  • DOI: 10.1063/1.3677939
  • Peer Reviewed
• [Journal Article] Microstructure and martensitic transformation in the Fe-Mn-Al-Ni shape memory alloy with B2-type coherent fine particles (2012)
  • Author(s): T, Omori, M. Nagasako, M. Okano, K. Endo, and R.Kainuma
  • Journal Title: App. Phys. Letters., Volume: 101 Issue: 23 Pages: 231907-231907
  • DOI: 10.1063/1.4769375
  • Peer Reviewed
• [Journal Article] 新しい鉄系および銅系超弾性合金の開発 (2012)
  • Author(s): 大森俊洋、荒木慶一、須藤祐司、石田清仁、貝沼亮介
  • Journal Title: 機能材料6月号 Volume: vol.32 Pages: 3-9
  • URL: http://www.cmcbooks.co.jp/
• [Journal Article] 鉄系・銅系超弾性合金の最近の研究開発 (2012)
  • Author(s): 大森俊洋、荒木慶一、石田清仁、貝沼亮介
  • Journal Title: 金属 Volume: vol.82 No.6 Pages: 458-465
  • URL: http://www.agne.co.jp/kinzoku/
  • Peer Reviewed
• [Journal Article] 新しい鉄系および銅系超弾性合金の開発 (2012)
  • Author(s): 大森俊洋、荒木慶一、須藤祐司、石田清仁、貝沼亮介
  • Journal Title: 機能材料 Volume: 32 Pages: 3-9
• [Journal Article] 鉄系形状記憶合金の最近の展開 (2011)
  • Author(s): 貝沼亮介,大森俊洋,田中優樹,石田清仁
  • Journal Title: ふぇらむ Volume: Vol. 16 Pages: 613-621
  • NAID: 40018970342
  • URL: https://www.isij.or.jp/journal/ferrum/
  • Peer Reviewed
• [Journal Article] Superelastic Effect in Polycrystalline Ferrous Alloys (2011)
  • Author(s): T.Omori, et al
  • Journal Title: Science Volume: 333 Issue: 6038 Pages: 68-71
  • DOI: 10.1126/science.1202232
  • Peer Reviewed
• [Journal Article] 鉄系形状記憶合金の最近の展開 (2011)
  • Author(s): 貝沼亮介
  • Journal Title: ふぇらむ Volume: 16 Pages: 613-621
• [Presentation] 鉄系形状記憶合金における最近の進展と超弾性特性 (2014)
  • Author(s): 大森俊洋、石田清仁、貝沼亮介
  • Organizer: 第154回日本金属学会春期大会
  • Place of Presentation: 東京
• [Presentation] Microstructure and Martensitic and Magnetic Transformations in Fe-Mn-Al-Ni Shape Memory Alloy (2013)
  • Author(s): T. Omori, M. Nagasako, R. Kainuma
  • Organizer: ICFSMA 2013
  • Place of Presentation: Boise, USA
• [Presentation] Fe-Mn-Al-Ni形状記憶合金の磁性とマルテンサイト変態 (2012)
  • Author(s): 大森俊洋、遠藤慶太、石田清仁、貝沼亮介
  • Organizer: 第151回日本金属学会秋期大会
  • Place of Presentation: 愛媛
• [Presentation] Alloy Design and Superelasticity in Fe-Mn-Al-Ni Alloy (2012)
  • Author(s): T. Omori, K. Ando, I. Ohnuma, K. Ishida, R. Kainuma
  • Organizer: CIMTEC2012
  • Place of Presentation: Montecattini Terme, Italy
• [Presentation] Fe- and Ni-Based Magnetic Shape Memory Alloys (2012)
  • Author(s): T. Omori
  • Organizer: Workshop "New Concepts for Active Materials, Actuators and Bioinspired Sensing-Actuation Control"
  • Place of Presentation: Seattle, USA
• [Presentation] Fe- and Ni-Based Magnetic Shape Memory Alloys”, Workshop “New Concepts for Active Materials (2012)
  • Author(s): Ｔ．Ｏｍｏｒｉ
  • Organizer: Workshop “New Concepts for Active Materials, Actuators and Bioinspired Sensing-Actuation Control”
  • Place of Presentation: Ｓｅａｔｔｌｅ, the United States
  • Invited
• [Presentation] 新規鉄系合金の超弾性特性 (2011)
  • Author(s): 大森俊洋、貝沼亮介、石田清仁
  • Organizer: SMAシンポジウム2011
  • Place of Presentation: 東京
  • Year and Date: 2011-11-25
• [Presentation] Fe-Mn-Al-Ni超弾性合金における集合組織制御 (2011)
  • Author(s): 岡野将卓、大森俊洋、石田清仁、貝沼亮介
  • Organizer: 第149回日本金属学会秋期大会
  • Place of Presentation: 沖縄
• [Presentation] Fe-Mn-Al-Ni合金のα→γ'マルテンサイト変態と小さな温度依存性を示す超弾性特性 (2011)
  • Author(s): 大森俊洋、安藤佳祐、大沼郁雄、貝沼亮介、石田清仁
  • Organizer: 第149回日本金属学会秋期大会
  • Place of Presentation: 沖縄
• [Presentation] Fe-Mn-Al系合金のBCC相からのマルテンサイト変態と超弾性特性 (2011)
  • Author(s): 大森俊洋、安藤佳祐、大沼郁雄、貝沼亮介、石田清仁
  • Organizer: 日本鉄鋼協会第162回秋季講演大会
  • Place of Presentation: 大阪
• [Presentation] Texture Formation and Martensitic Transformation in Fe-Mn-Al bcc Alloys (2011)
  • Author(s): M. Okano, T. Omori, K. Ishida, R. Kainuma
  • Organizer: International conference on martensitic transformations 2011 (ICOMAT2011), JIMIC-8 (The Japan Institute of Metals Interenational Conference 8)
  • Place of Presentation: Osaka, Japan
• [Presentation] New Ferrous Shape Memory Alloys–Fe-Mn-(Al or Ga)αalloys and Fe-Ni-Co-Al-basedγalloy- (2011)
  • Author(s): T. Omori, K. Ando, Y. Tanaka, R. Kainuma and K. Ishida
  • Organizer: International conference on martensitic transformations 2011 (ICOMAT2011)
  • Place of Presentation: Osaka, Japan
• [Presentation] Phase Transformation and Magnetic-Field-Induced Strain in Fe-Mn-Ga Shape Memory Alloys (2011)
  • Author(s): T. Omori, K. Watanabe, R.Y. Umetsu, K. Ishida, R. Kainuma
  • Organizer: 3rd International Conference on Ferromagnetic Shape Memory Alloys (ICFSMA'11)
  • Place of Presentation: Dresden, Germany
• [Presentation] Phase Transformation and Magnetic-Field-Induced Strain in Fe-Mn-Ga Shape Memory Alloys (2011)
  • Author(s): T. Omori
  • Organizer: ICFSMA'11
  • Place of Presentation: ドレスデン（ドイツ）
• [Presentation] New Ferrous Shape Memory Alloys –Fe-Mn-(Al or Ga) &#61537; alloys and Fe-Ni-Co-Al-based &#61543; alloy- (2011)
  • Author(s): T. Omori
  • Organizer: International conference on martensitic transformations (ICOMAT2011)
  • Place of Presentation: 大阪
• [Presentation] Texture Formation and Martensitic Transformation in Fe-Mn-Al bcc Alloys (2011)
  • Author(s): M. Okano
  • Organizer: International conference on martensitic transformations (ICOMAT2011)
  • Place of Presentation: 大阪
• [Presentation] Fe-Mn-Al-Ni合金のα→γ’マルテンサイト変態と小さな温度依存性を示す超弾性特性 (2011)
  • Author(s): 大森俊洋
  • Organizer: 第149回日本金属学会秋期大会
  • Place of Presentation: 沖縄
• [Presentation] Fe-Mn-Al-Ni 超弾性合金における集合組織制御 (2011)
  • Author(s): 岡野将卓
  • Organizer: 第149回日本金属学会秋期大会
  • Place of Presentation: 沖縄
• [Remarks]
  • URL: http://www.material.tohoku.ac.jp/~seigyo/lab.html
• [Remarks] 東北大学貝沼研究室
  • URL: http://www.material.tohoku.ac.jp/~seigyo/lab.html
• [Remarks] 東北大学貝沼研究室
  • URL: http://www.material.tohoku.ac.jp/~seigyo/lab.html
• [Remarks] 貝沼研究室
  • URL: http://www.material.tohoku.ac.jp/~seigyo/kai_lab/lab.html