Materials Design of Bulk Nanostructure Metals

2014 Fiscal Year Final Research Report

• Project Area: Bulk Nanostructured Metals -New Metallurgy of Novel Structural Materials
• Project/Area Number: 22102002
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Kyoto University
• Principal Investigator: TSUJI Nobuhiro 京都大学, 工学(系)研究科(研究院), 教授 (30263213)
• Co-Investigator(Kenkyū-buntansha): HONO Kazuhiro 物質, 材料研究機構, フェロー (60229151) ; HATA Satoshi 九州大学, 大学院総合理工学研究科, 教授 (60264107) ; TODAKA Yoshikazu 豊橋技術科学大学, 大学院工学研究科, 准教授 (50345956) ; UEJI Rintato 大阪大学, 接合科学研究所, 准教授 (80380145) ; TERADA Daisuke 千葉工業大学, 大学院工学研究科, 准教授 (80432524) ; SHIBATA Akinobu 京都大学, 大学院工学研究科, 准教授 (60451994)
• Project Period (FY): 2010-04-01 – 2015-03-31
• Keywords: 構造用金属材料 / 巨大ひずみ加工 / 超微細粒 / 相変態 / 結晶粒界 / 先端電子顕微鏡法 / 転位・双晶 / 力学特性

Outline of Final Research Achievements

5-year research works have delivered a number of fruitful results for designing bulk nanostructure metals having superior mechanical properties. Examples of outstanding achievements are, (1) new thermomechanical processes for fabricating bulk nanostructure metals without severe plastic deformation, (2) succeeding in producing fully recrystallized bulk nano-metals in some alloys, (3) excellent toughness and good resistance to hydrogen embrittlement, (4) clarifying alloying elements suitable to good mechanical properties in bulk nanostructure Mg-alloys, and (5) structure and properties of peculiar nanostructures caused by phase transformations during severe plastic deformation under high pressure.

Free Research Field

金属材料学、材料組織学、材料強度学