Mg-Sc based alloy with high strength and functionality using BCC/HCP phase transformation

• Project/Area Number: 15H05549
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Material processing/Microstructural control engineering
• Research Institution: Tohoku University
• Principal Investigator: Ando Daisuke 東北大学, 工学研究科, 助教 (50615820)
• Co-Investigator(Renkei-kenkyūsha): KOIKE Junichi 東北大学, 未来科学技術共同研究センター, 教授 (10261588) ; SUTOU Yuji 東北大学, 工学研究科, 准教授 (80375196)
• Research Collaborator: OGAWA Yukiko ; TAKEUCHI Yuta
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥23,400,000 (Direct Cost: ¥18,000,000、Indirect Cost: ¥5,400,000); Fiscal Year 2017: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2016: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000); Fiscal Year 2015: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
• Keywords: マグネシウム / スカンジウム / マルテンサイト変態 / 高強度 / 高延性 / 超弾性 / 形状記憶 / 軽金属 / 超弾性・形状記憶 / HCP/BCC変態 / 超高硬度 / 時効析出 / BCC/HCP変態

Outline of Final Research Achievements

I focused novel Mg-Sc alloys with high strength and functionality using phase transformation. This study mainly shows Mg-Sc alloy exhibits Martensitic transformation from BCC phase to orthorhombic phase and the transformation produces super-elasticity and shape memory effects for the first time in the world. This result disproved Mg alloys can not exhibit Martensitic transformation because the hardness of Magnesium is too low. Furthermore, it indicates some possibility to use the Mg-Sc alloy for aerospace and medical application such as self expanding frames of solar panel and biodegradable implant material.

Research Products

• [Journal Article] Effect of Initial Microstructure on Stress-Strain Behavior in Mg-Sc-Zn Based Alloy with High Sc Content (2017)
  • Author(s): 竹内 悠太, 小川 由希子, 安藤 大輔, 須藤 祐司, 小池 淳一
  • Journal Title: Journal of the Japan Institute of Metals and Materials Volume: 81 Issue: 5 Pages: 276-281
  • DOI: 10.2320/jinstmet.JBW201612
  • NAID: 130005611879
  • ISSN: 0021-4876, 1880-6880, 2433-7501
  • Peer Reviewed
• [Journal Article] Texture randomization of hexagonal close packed phase through hexagonal close packed/body centered cubic phase transformation in Mg-Sc alloy (2017)
  • Author(s): Yukiko Ogawa, Daisuke Ando, Yuji Sutou, and Junichi Koike
  • Journal Title: Scripta Materialia Volume: vol. 128 Pages: 27-31
  • DOI: 10.1016/j.scriptamat.2016.09.024
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] A lightweight shape-memory magnesium alloy (2016)
  • Author(s): Yukiko Ogawa, Daisuke Ando, Yuji Sutou, and Junichi Koike
  • Journal Title: Science Volume: 353 Issue: 6297 Pages: 368-370
  • DOI: 10.1126/science.aaf6524
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Aging Effect of Mg-Sc Alloy with α+β Two-Phase Microstructure (2016)
  • Author(s): Yukiko Ogawa, Daisuke Ando, Yuji Sutou and Junichi Koike
  • Journal Title: MATERIALS TRANSACTIONS Volume: 57 Issue: 7 Pages: 1119-1123
  • DOI: 10.2320/matertrans.M2016093
  • NAID: 130005158400
  • ISSN: 1345-9678, 1347-5320
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Determination of α/β phase boundaries and mechanical characterization of Mg-Sc binary alloys (2016)
  • Author(s): Yukiko Ogawa, Daisuke Ando, Yuji Sutou, Kyosuke Yoshimi and Junichi Koike
  • Journal Title: Materials science and Engineering A Volume: 670 Pages: 335-341
  • DOI: 10.1016/j.msea.2016.06.028
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Aging Effect of Mg-Sc Alloy with α+β Two-Phase Microstructure (2016)
  • Author(s): Yukiko Ogawa, Daisuke Ando, Yuji Sutou, Junichi Koike
  • Journal Title: Journal of the Japan Institute of Metals and Materials Volume: 80 Issue: 3 Pages: 171-175
  • DOI: 10.2320/jinstmet.JBW201511
  • NAID: 130005127238
  • ISSN: 0021-4876, 1880-6880, 2433-7501
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Mg-Y合金における球状圧子を用いたナノインデンテーション応答 (2017)
  • Author(s): 安藤大輔、須藤祐司、小池淳一、Warren Poole
  • Organizer: 日本金属学会2017年春期講演大会
  • Place of Presentation: 首都大学東京、東京
  • Year and Date: 2017-03-15
• [Presentation] Mg-Sc based alloys and its functionality (2017)
  • Author(s): Daisuke Ando, Yukiko Ogawa, Yuta Takeuchi, Yuji Sutou, Junichi Koike
  • Organizer: TMS annual meeting 2017
  • Place of Presentation: San Diego, USA
  • Year and Date: 2017-02-26
  • Int'l Joint Research / Invited
• [Presentation] Mg-Sc基合金における時効硬化挙動 (2017)
  • Author(s): 安藤大輔、竹内悠太、須藤祐司、小川由希子、小池淳一
  • Organizer: 軽金属学会 第133回秋期大会
• [Presentation] The effects of Zn addition on mechanical properties and martensitic transformation temperature for Mg-Sc alloy (2017)
  • Author(s): Yuta Takeuchi, Daisuke Ando, Yukiko Ogawa, Junichi Koike
  • Organizer: EUROMAT2017
  • Int'l Joint Research
• [Presentation] Martensitic transformable Mg-Sc based Alloy and its functionality (2017)
  • Author(s): D. Ando, Y. Takeuchi, Y. Ogawa, Y. Sutou and J. Koike
  • Organizer: EUROMAT2017
  • Int'l Joint Research / Invited
• [Presentation] Deformation twinning and Stress induced Martensitic transformation of Mg alloy (2017)
  • Author(s): D. Ando, Y. Ogawa, Y. Takeuchi, Y. Sutou and J. Koike
  • Organizer: 日本金属学会 第161回秋期講演大会
  • Int'l Joint Research / Invited
• [Presentation] マグネシウム合金における変形双晶の役割とマルテンサイト変態への展開 (2017)
  • Author(s): 安藤大輔
  • Organizer: 日本金属学会 第161回秋期講演大会
  • Invited
• [Presentation] Mg-Sc合金へのZn添加がマルテンサイト変態温度並びに形状記憶特性に与える影響 (2017)
  • Author(s): 竹内悠太, 小川由希子, 安藤大輔, 須藤祐司, 小池淳一
  • Organizer: 日本金属学会 第161回秋期講演大会
• [Presentation] bcc構造を有するMg-Sc-Zn合金の機械的性質 (2017)
  • Author(s): 竹内悠太, 小川由希子, 安藤大輔, 須藤祐司, 小池淳一
  • Organizer: 日本材料科学会 第24回若手研究者討論会
• [Presentation] Magnesium-based shape memory alloy (2017)
  • Author(s): Y. Sutou, Y. Ogawa, D. Ando, J. Koike
  • Organizer: ICOMAT2017
  • Int'l Joint Research / Invited
• [Presentation] Age hardening behavior in BCC type Mg-Sc alloy (2017)
  • Author(s): D. Ando, Y. Ogawa, Y. Sutou, J. Koike
  • Organizer: ICOMAT2017
  • Int'l Joint Research