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Structure-property relation of higher-ordered structures - Control of nanostructure for materials properties in Al5Fe2

Research Project

Project/Area Number 21K18825
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 26:Materials engineering and related fields
Research InstitutionKyoto University

Principal Investigator

INUI HARUYUKI  京都大学, 工学研究科, 教授 (30213135)

Co-Investigator(Kenkyū-buntansha) 岸田 恭輔  京都大学, 工学研究科, 准教授 (20354178)
陳 正昊  京都大学, 工学研究科, 助教 (20889109)
Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2022: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2021: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Keywords高次規則構造 / 結晶構造 / 部分占有 / 構造物性 / 溶融アルミめっき鋼板 / 相変態 / 電子顕微鏡法 / X線回折
Outline of Research at the Start

溶融アルミメッキ鋼板の防食性金属間化合物コーティング層の主構成相で工業的に大変重要であるAl5Fe2相で最近,これまで信じられていた斜方晶系結晶構造に加えて高次規則相が多数出現することを発見した.一連の「高次規則相」はAl原子のみが部分占有すると信じられていたc軸チェーンサイト内でのAlおよびFe部分占有原子の高次規則配列によるものであり,この高次規則配列がどのように決定されるのか?その規則配列によってどのように物性が変化するのか?高次規則構造の構造物性について予測性を持った系統的理解の確立を目指しつつ,これまでに前例のない独自の学術領域を切り開くことに挑戦する.

Outline of Final Research Achievements

In addition to the previously reported orthorhombic phase, we have found many higher-ordered phases for Al5Fe2, which is industrially very important as the major constituent phase in the coating layer of hot-dip aluminized steel. The crystal structure of the previously reported orthorhombic Al5Fe2 phase consists of the network structure of the Al2Fe stoichiometry and the partially-occupied Al-site chains, in which 6 consecutive Al2 and Al3 sites that are allowed to be occupied by Al atoms are aligned along the c-axis. A series of higher-ordered phases are found to form with some ordered arrangements of Al and Fe atoms in the partially-occupied Al-site chains parallel to the c-axis. The crystal structures of four different higher-ordered phases for Al5Fe2 have been refined and the origin of differences in deformability has been elucidated.

Academic Significance and Societal Importance of the Research Achievements

一連の「高次規則相」は,Al5Fe2相の固溶範囲内では化合物の密度は大きく変化しないという知見から,高次規則構造は,c軸チェーンサイト内でのAlおよびFe部分占有原子の高次規則配列によるもので,この高次規則配列がFe/Al濃度,温度によりどのように決定されるか,その規則配列によってどのように物性が変化するのか実験的に評価する点に高い創造性があり,学術的意義がある.また,高次規則構造の制御により,Al5Fe2相金属間化合物に物性・特性の改善の可能性に繋がり,我が国発の独自技術である溶融アルミメッキ鋼板の脆化抑制に応用できる技術に直結する成果が上げられる可能性が高く,社会的意義も高いといえる.

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (27 results)

All 2023 2022 2021 Other

All Int'l Joint Research (6 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (16 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results) Remarks (1 results)

  • [Int'l Joint Research] オークリッジ国立研究所/オハイオ州立大学(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] ルール大学ボッフム校(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] 浦頂工科大学(韓国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] オークリッジ国立研究所/オハイオ州立大学(米国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] ルール大学ボッフム校(ドイツ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] 浦頂工科大学(韓国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Room-temperature plastic deformation of single crystals of α-manganese - hard and brittle metallic element2023

    • Author(s)
      Kishida Kyosuke、Suzuki Hirotaka、Okutani Masaomi、Inui Haruyuki
    • Journal Title

      International Journal of Plasticity

      Volume: 160 Pages: 103510-103510

    • DOI

      10.1016/j.ijplas.2022.103510

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Room-temperature deformation of single crystals of the sigma-phase compound FeCr with the tetragonal D8b structure investigated by micropillar compression2023

    • Author(s)
      Kishida Kyosuke、Okutani Masaomi、Suzuki Hirotaka、Inui Haruyuki、Heilmaier Martin、Raabe Dierk
    • Journal Title

      Acta Materialia

      Volume: 249 Pages: 118829-118829

    • DOI

      10.1016/j.actamat.2023.118829

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Plastic deformation of bulk and micropillar single crystals of Mo5Si3 with the tetragonal D8 structure2022

    • Author(s)
      Kishida Kyosuke、Chen Zhenghao、Matsunoshita Hirotaka、Maruyama Takuto、Fukuyama Takayoshi、Sasai Yuta、Inui Haruyuki、Heilmaier Martin
    • Journal Title

      International Journal of Plasticity

      Volume: 155 Pages: 103339-103339

    • DOI

      10.1016/j.ijplas.2022.103339

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Direct observation of zonal dislocation in complex materials by atomic-resolution scanning transmission electron microscopy2022

    • Author(s)
      Kishida Kyosuke、Okutani Masaomi、Inui Haruyuki
    • Journal Title

      Acta Materialia

      Volume: 228 Pages: 117756-117756

    • DOI

      10.1016/j.actamat.2022.117756

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] パーライト鋼単結晶マイクロピラーの圧縮変形挙動の方位依存性2023

    • Author(s)
      森崎 睦、門田 信幸、岸田 恭輔、乾 晴行
    • Organizer
      日本金属学会2023年 春期(第171回)講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] μ-Fe6Ta7の塑性変形挙動2023

    • Author(s)
      岸 達郎、陳 正昊、岸田 恭輔、乾 晴行
    • Organizer
      日本金属学会2023年 春期(第171回)講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Ambient-temperature Plasticity of Brittle Intermetallics at Micron-meter Size Scales2023

    • Author(s)
      Haruyuki Inui、Kyosuke Kishida
    • Organizer
      TMS 2023 Annual Meeting & Exhibition
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Ambient-temperature Plasticity of Brittle Intermetallics at Micron-meter Size Scales2022

    • Author(s)
      Haruyuki Inui
    • Organizer
      MATERIALS STRUCTURE & MICROMECHANICS OF FRACTURE (MSMF10)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] η-Fe2Al5単結晶の塑性変形挙動2022

    • Author(s)
      YU HUAMENG、堀江 典、陳正 昊、岸田 恭輔、乾 晴行
    • Organizer
      日本金属学会2022年秋期(第171回)講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] パーライト鋼単結晶マイクロピラーの塑性変形挙動2022

    • Author(s)
      森崎 睦、門田 信幸、岸田 恭輔、乾 晴行
    • Organizer
      日本金属学会2022年秋期(第171回)講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] α-Mn単結晶マイクロピラーの室温圧縮変形2022

    • Author(s)
      鈴木 広崇、奥谷 将臣、岸田 恭輔、乾 晴行
    • Organizer
      日本金属学会2022年秋期(第171回)講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Cr23C6単結晶マイクロピラーの室温塑性変形2022

    • Author(s)
      伊藤 充洋、乾 晴行、岸田 恭輔
    • Organizer
      日本金属学会2022年秋期(第171回)講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Fe-Cr系σ相における特異なすべり変形2022

    • Author(s)
      岸田 恭輔、鈴木 広崇、奥谷 将臣、乾 晴行
    • Organizer
      日本金属学会2022年秋期(第171回)講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 異方性結晶の単結晶圧縮試験におけるキンク帯形成2022

    • Author(s)
      岸田 恭輔、野瀬 浩晃、大影 晃平、乾 晴行
    • Organizer
      日本金属学会2022年秋期(第171回)講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Direct Observation of Zonal Dislocations in σ-FeCr by Atomic-Resolution Scanning Transmission Electron Microscopy2022

    • Author(s)
      Kyosuke Kishida, Masaomi Okutani, Hirotaka Suzuki, Haruyuki Inui
    • Organizer
      2022 MRS Fall Meeting and Exhibit
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Plastic Deformation Behavior of Single Crystalline Pearlitic Steel Investigated by Micropillar Compression Method2022

    • Author(s)
      Mutsumi Morisaki, Nobuyuki Kadota, Kyosuke Kishida, Haruyuki Inui
    • Organizer
      2022 MRS Fall Meeting and Exhibit
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Fe-Cr 系 σ 相における Zonal 転位の転位芯構造2022

    • Author(s)
      鈴木広崇, 奥谷将臣, 岸田恭輔, 乾 晴行
    • Organizer
      日本金属学会2022年春期(第170回)講演大会(オンライン開催)
    • Related Report
      2021 Research-status Report
  • [Presentation] Atomic-scale observation of chemical short-range ordering and its relation to plastic deformation behavior in equiatomic Cr-Co-Ni medium-entropy alloy2022

    • Author(s)
      李 楽, 伊藤充洋, 黒岩省吾, 陳 正昊, 岸田恭輔, 乾 晴行
    • Organizer
      日本金属学会2022年春期(第170回)講演大会(オンライン開催)
    • Related Report
      2021 Research-status Report
  • [Presentation] Mg-Zn-Y LPSO 相単結晶マイクロピラーにおけるキンク帯形成条件2021

    • Author(s)
      岸田 恭輔,大影 晃平,乾 晴行
    • Organizer
      日本金属学会2021年秋期(第169回)講演大会(オンライン開催)
    • Related Report
      2021 Research-status Report
  • [Presentation] Micropillar compression deformation of single crystal of Fe3Ge with the L12 structure2021

    • Author(s)
      Zhenghao Chen, Haruyuki Inui
    • Organizer
      Intermetallics 2021(Bad Staffelstein, Germany)(online)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Remarks] 京都大学 大学院工学研究科 材料工学専攻 乾研究室ホームページ

    • URL

      http://imc.mtl.kyoto-u.ac.jp/

    • Related Report
      2022 Annual Research Report 2021 Research-status Report

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Published: 2021-07-13   Modified: 2024-01-30  

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