Development of multifunctional zinc alloy having energy absorption of porous metals and damping capacity of superplastic materials

• Project/Area Number: 25420759
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Structural/Functional materials
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: KITAZONO Koichi 首都大学東京, システムデザイン研究科, 教授 (20321573)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 超塑性 / ポーラス材料 / ひずみ速度感受性 / 衝撃吸収 / 鋳造

Outline of Final Research Achievements

Porous Zn-22Al superplastic alloy having cell microstructure of porous metals and fine crystal grain of superplastic metals has been manufactured. The samples fabricated through casting process with a foaming agent has the porosity of 80% and average pore size of 2.9 mm. Fine crystal grains with 2.2 micrometer size has been fabricated through solution heat treatment followed by artificial aging. Quasi-static and dynamic compression tests revealed that the porous Zn-22Al superplastic alloy has high strain rate sensitivity. Newly developed porous metal has a potential of energy absorbing material.

Research Products

• [Journal Article] Energy absorption of superplastic Zn-22Al alloy foam manufactured through melt foaming process (2016)
  • Author(s): S. Ogawa, K. Sekido, K. Kitazono
  • Journal Title: Materials Science Forum Volume: 838-839 Pages: 231-236
  • DOI: 10.4028/www.scientific.net/msf.838-839.231
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Constitution of ISO and JIS for method of tensile testing of superplastic materials (2016)
  • Author(s): K. Kitazono, Y. Takayama, Y. Motohashi, F. Ono
  • Journal Title: Materials Science Forum Volume: 838-839 Pages: 453-458
  • DOI: 10.4028/www.scientific.net/msf.838-839.453
  • Peer Reviewed
• [Journal Article] Strain rate sensitivity and high temperature deformation mechanisms of cast Zn-22Al alloy foams (2014)
  • Author(s): K. Kitazono and K. Sekido
  • Journal Title: Procedia Materials Science Volume: 4 Pages: 169-173
  • DOI: 10.1016/j.mspro.2014.07.586
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Presentation] Constitution of ISO and JIS for method of tensile testing of superplastic materials (2015)
  • Author(s): K. Kitazono, Y. Takayama, Y. Motohashi, F. Ono
  • Organizer: ICSAM 2015
  • Place of Presentation: 東京大学本郷キャンパス
  • Year and Date: 2015-09-10
  • Int'l Joint Research / Invited
• [Presentation] Energy absorption of superplastic Zn-22Al alloy foam manufactured through melt foaming process (2015)
  • Author(s): S. Ogawa, K. Sekido, K. Kitazono
  • Organizer: ICSAM 2015
  • Place of Presentation: 東京大学本郷キャンパス
  • Year and Date: 2015-09-08
  • Int'l Joint Research
• [Presentation] 溶湯法で作製されたポーラスZn-22Al合金の超塑性特性に及ぼす発泡剤の影響 (2015)
  • Author(s): 小川聡、北薗幸一
  • Organizer: 塑性加工春季講演会
  • Place of Presentation: 慶応大学
  • Year and Date: 2015-05-30
• [Presentation] 炭酸水素ナトリムを用いて作製されたポーラスZn-22Al合金の圧縮特性 (2014)
  • Author(s): 小川聡、北薗幸一
  • Organizer: 塑性加工連合講演会
  • Place of Presentation: 岡山大学
  • Year and Date: 2014-10-11
• [Presentation] 炭酸水素ナトリウムによるポーラスZn-22Al超塑性合金の作製とそのセル形態 (2014)
  • Author(s): 小川聡、関戸健治、北薗幸一
  • Organizer: 塑性加工春季講演会
  • Place of Presentation: つくば国際会議場
  • Year and Date: 2014-06-08
• [Presentation] ポーラスZn-22Al合金の超塑性特性に及ぼすセル形態の影響 (2013)
  • Author(s): 関戸健治、北薗幸一
  • Organizer: 塑性加工連合講演会
  • Place of Presentation: 大阪大学