Clarification of new abnormal grain growth phenomenon induced by phase transformation

• Project/Area Number: 26289226
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Physical properties of metals/Metal-base materials
• Research Institution: Tohoku University
• Principal Investigator: Omori Toshihiro 東北大学, 工学(系)研究科(研究院), 准教授 (60451530)
• Co-Investigator(Kenkyū-buntansha): 貝沼 亮介 東北大学, 工学(系)研究科(研究院), 教授 (20202004) ; 大沼 郁雄 東北大学, 工学(系)研究科(研究院), 准教授 (20250714)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000); Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2015: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2014: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
• Keywords: 結晶粒成長 / 異常粒成長 / 形状記憶合金 / 超弾性 / 相変態

Outline of Final Research Achievements

Abnormal grain growth phenomenon induced by cyclic heat treatment through α→α＋β→β phase transformations was investigated in Cu-Al-Mn and Fe-Mn-Al-Ni alloys. It was found that the subgrain structure forms associated with precipitation of the second phase and that it exists after solution treatment. Annealing at higher temperatures resulted in abnormal grain growth, and the subgrain free zone was observed after migration of the high-angle boundary. The abnormal grain growth can be explained by considering the sub-boundary energy as a driving pressure.

Research Products

• [Int'l Joint Research] Universidade Nova de Lisboa(ポルトガル)
• [Int'l Joint Research] Universidade Nova de Lisboa(ポルトガル)
• [Journal Article] Abnormal Grain Growth Induced by Cyclic Heat Treatment in Fe-Mn-Al-Ni Superelastic Alloy (2016)
  • Author(s): T. Omori, H. Iwaizako, R. Kainuma
  • Journal Title: Materials and Design Volume: 101 Pages: 263-269
  • DOI: 10.1016/j.matdes.2016.04.011
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Improvement of damping properties in laser processed superelastic Cu-Al-Mn shape memory alloys (2016)
  • Author(s): J.P. Oliveira, Z. Zeng, T. Omori, N. Zhou, R.M.Miranda, F.M. Braz Fernandes
  • Journal Title: Materials and Design Volume: 98 Pages: 280-284
  • DOI: 10.1016/j.matdes.2016.03.032
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Functional Fatigue of Polycrystalline Cu-Al-Mn Superelastic Alloy Bars under Cyclic Tension (2016)
  • Author(s): K. Shrestha, Y. Araki, T. Kusama, T. Omori, R. Kainuma
  • Journal Title: Journal of Materials in Civil Engineering Volume: 28 Issue: 5
  • DOI: 10.1061/(asce)mt.1943-5533.0001417
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Laser Welded Superelastic Cu-Al-Mn Shape Memory Alloy Wires (2016)
  • Author(s): J.P. Oliveira, B. Panton, Z. Zeng, T. Omori, Y. Zhou, R.M.Miranda, F.M. Braz Fernandes
  • Journal Title: Materials and Design Volume: 90 Pages: 122-128
  • DOI: 10.1016/j.matdes.2015.10.125
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Shaking Table Tests of Steel Frame With Superelastic Cu-Al-Mn SMA Tension Braces (2016)
  • Author(s): Yoshikazu Araki, Kshitij C. Shrestha, Nao Maekawa, Yuji Koetaka, Toshihiro Omori, Ryosuke Kainuma
  • Journal Title: Earthquake Engineering & Structural Dynamics Volume: 45 Issue: 2 Pages: 297-314
  • DOI: 10.1002/eqe.2659
  • Peer Reviewed
• [Journal Article] Integrated mechanical and material design of quasi-zero-stiffness vibration isolator with superelastic Cu-Al-Mn shape memory alloy bars (2015)
  • Author(s): Yoshikazu Araki, Kosuke Kimura, Takehiko Asai, Takeshi Masui, Toshihiro Omori, Ryosuke Kainuma
  • Journal Title: Journal of Sound and Vibration Volume: 358 Pages: 74-83
  • DOI: 10.1016/j.jsv.2015.08.018
  • NAID: 120005690141
  • Peer Reviewed
• [Presentation] Fe-Mn-Al-Ni 合金におけるマルテンサイト変態と超弾性に及ぼす影響 (2016)
  • Author(s): 野口侑紀、許皛、大森俊洋、貝沼亮介
  • Organizer: 日本金属学会2016年秋期講演大会
  • Place of Presentation: 大阪大学、大阪
  • Year and Date: 2016-09-21
• [Presentation] Co-Fe-Al 3 元系における相平衡の調査 (2016)
  • Author(s): 竹川祥平、大森俊洋、貝沼亮介
  • Organizer: 日本金属学会2016年秋期講演大会
  • Place of Presentation: 大阪大学、大阪
  • Year and Date: 2016-09-21
• [Presentation] Giant Internal Friction and Impact Toughness in Superelastic FeMnAl(Ni) (2016)
  • Author(s): V. V. Khovaylo, I. S. Golovin, A. A. Komissarov, M. V. Lyange, T. Omori, R. Kainuma
  • Organizer: ICFSMA2016
  • Place of Presentation: ホテルメトロポリタン仙台、仙台
  • Year and Date: 2016-09-05
  • Int'l Joint Research
• [Presentation] Low-Temperature Specific Heat of Fe-Mn-Al-Ni Shape Memory Alloy (2016)
  • Author(s): J. Xia, X. Xu, T. Omori, R. Kainuma
  • Organizer: ICFSMA2016
  • Place of Presentation: ホテルメトロポリタン仙台、仙台
  • Year and Date: 2016-09-05
  • Int'l Joint Research
• [Presentation] Thermodynamic analysis of BCC/FCC martensitic transformation in the Fe-Mn-Al system (2016)
  • Author(s): T. Omori, I. Ohnuma, K. Ishida, R. Kainuma
  • Organizer: CALPHAD XLV
  • Place of Presentation: 淡路夢舞台国際会議場、淡路
  • Year and Date: 2016-05-29
  • Int'l Joint Research
• [Presentation] Cu-Al-Mn超弾性合金の粒界性格制御による応力腐食割れの抑制について (2016)
  • Author(s): 喜瀬純男, 田中豊延, 藤井美里, 大森俊洋, 貝沼亮介
  • Organizer: 日本金属学会2016年(第158回)春期講演大会
  • Place of Presentation: 東京理科大学、東京
  • Year and Date: 2016-03-23
• [Presentation] Cu-Al-Mn超弾性合金の制震部材としての利用に向けたミクロ組織制御 (2016)
  • Author(s): 大森俊洋
  • Organizer: 日本金属学会2016年(第158回)春期講演大会
  • Place of Presentation: 東京理科大学、東京
  • Year and Date: 2016-03-23
• [Presentation] γ相析出によるFe-Mn-Al-Ni超弾性合金の高延性化 (2015)
  • Author(s): 夏季, 許皛, 大森俊洋, 貝沼亮介
  • Organizer: 日本金属学会東北支部第14回研究発表大会
  • Place of Presentation: 弘前大学、弘前
  • Year and Date: 2015-12-05
• [Presentation] Fe-Mn-Al-Ni超弾性合金の組織制御と高延性化 (2015)
  • Author(s): 大森俊洋,夏 季，許 皛，貝沼 亮介
  • Organizer: 形状記憶合金協会SMAシンポジウム2015
  • Place of Presentation: 金沢歌劇座、金沢
  • Year and Date: 2015-11-12
• [Presentation] γ相析出によるFe-Mn-Al-Ni形状記憶合金の高延性化 (2015)
  • Author(s): 夏季, 許皛, 大森俊洋, 貝沼亮介
  • Organizer: 日本金属学会2015年(第157回)秋期講演大会
  • Place of Presentation: 九州大学、福岡
  • Year and Date: 2015-09-16
• [Presentation] Cu-Al-Mn系形状記憶合金におけるサイクル熱処理中の組織変化と異常粒成長 (2015)
  • Author(s): 草間知枝、大森俊洋、貝沼亮介
  • Organizer: 日本金属学会2015年春期講演大会
  • Place of Presentation: 東京大学、東京
  • Year and Date: 2015-03-18 – 2015-03-20
• [Presentation] Cu-Al-Mn３元系形状記憶合金の集合組織形成における組織変化 (2015)
  • Author(s): 大森俊洋、川田紳悟、貝沼亮介
  • Organizer: 日本金属学会2015年春期講演大会
  • Place of Presentation: 東京大学、東京
  • Year and Date: 2015-03-18 – 2015-03-20
• [Presentation] 相変態誘起によるFe-Mn-Al-Ni合金の異常粒成長 (2014)
  • Author(s): 大森俊洋、祝迫ひとみ、貝沼亮介
  • Organizer: 日本鉄鋼協会第168回秋季講演大会
  • Place of Presentation: 名古屋大学、名古屋
  • Year and Date: 2014-09-24 – 2014-09-26
• [Remarks] 貝沼研究室
  • URL: http://www.material.tohoku.ac.jp/~seigyo/lab.html