Achieving high strength and high damping capacity in biodegradable magnesium

• Project/Area Number: 24560810
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Physical properties of metals
• Research Institution: Osaka Municipal Technical Research Institute
• Principal Investigator: WATANABE Hiroyuki 地方独立行政法人大阪市立工業研究所, 加工技術研究部, 研究主任 (90416339)
• Co-Investigator(Kenkyū-buntansha): MUKAI Toshiji 神戸大学, 大学院工学研究科, 教授 (40254429)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2012: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
• Keywords: マグネシウム / ダンピング / 生体内分解性

Outline of Final Research Achievements

The purpose of this study was to achieve both high strength and high damping capacity through thermomechanical processing in biodegradable magnesium, which is applicable to orthopedic implants. To begin with, the effect of microstructural factors including grain size, texture and the existence of twins on damping capacity was clarified in pure magnesium. By controlling the microstructure of Mg-Ca alloys through thermomechanical processing, the alloy showed higher strength and damping capacity.

Research Products

• [Journal Article] Effect of deformation twins on damping capacity in extruded pure magnesium (2015)
  • Author(s): H. Watanabe, Y. Sasakura, N. Ikeo, T. Mukai
  • Journal Title: Journal of Alloys and Compounds Volume: 626 Pages: 60-64
  • DOI: 10.1016/j.jallcom.2014.11.143
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Mechanical Behavior at Low Strains in Pure Magnesium and Mg-Ca Alloy (2014)
  • Author(s): 渡辺博行、笹倉康義、向井敏司
  • Journal Title: Journal of the Japan Institute of Metals and Materials Volume: 78 Issue: 6 Pages: 230-234
  • DOI: 10.2320/jinstmet.J2013083
  • NAID: 130004786461
  • ISSN: 0021-4876, 1880-6880, 2433-7501
  • Peer Reviewed
• [Journal Article] Microyielding and damping capacity in magnesium (2014)
  • Author(s): H. Watanabe, T. Sawada, Y. Sasakura, N. Ikeo, T. Mukai
  • Journal Title: Scripta Materialia Volume: 87 Pages: 1-4
  • DOI: 10.1016/j.scriptamat.2014.06.004
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] 双晶を導入した純マグネシウムの減衰能 (2015)
  • Author(s): 渡辺博行、笹倉康義、池尾直子、向井敏司
  • Organizer: 日本金属学会2015年春期講演大会
  • Place of Presentation: 東京大学駒場Iキャンパス（東京都目黒区）
  • Year and Date: 2015-03-19
• [Presentation] 純マグネシウムにおける一軸変形応答と減衰能の対比 (2014)
  • Author(s): 渡辺博行、澤田忠明、笹倉康義、池尾直子、向井敏司
  • Organizer: 日本金属学会2014年秋期講演大会
  • Place of Presentation: 名古屋大学東山キャンパス（名古屋市千種区）
  • Year and Date: 2014-09-25
• [Presentation] Enhancement of Damping Capacity in Magnesium for Biomedical Implant Application
  • Author(s): T.Sawada, Y.Sasakura, N.Ikeo, H.Watanabe, T.Mukai
  • Organizer: International Symposium on EcoTopia Science 2013
  • Place of Presentation: 名古屋大学東山キャンパス （名古屋市千種区）
• [Presentation] 純Mgのダンピング特性に及ぼす双晶及び底面配向の影響
  • Author(s): 笹倉康義、渡辺博行、向井敏司
  • Organizer: 社団法人日本金属学会2012年秋期（第151回）大会
  • Place of Presentation: 愛媛大学（松山市）
• [Presentation] Effect of microstructural factors on damping capacity in pure magnesium
  • Author(s): Hiroyuki Watanabe、Yasuyoshi Sasakura、Toshiji Mukai
  • Organizer: TMS 2013 Annual Meeting
  • Place of Presentation: Henry B. Gonzalez Convention Center（San Antonio, Texas, USA）