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Study on fourth driving force following strain, grain boundary and surface energy

Research Project

Project/Area Number 19H02483
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 26050:Material processing and microstructure control-related
Research InstitutionKyushu Institute of Technology

Principal Investigator

Motozuka Satoshi  九州工業大学, 大学院工学研究院, 准教授 (30585089)

Co-Investigator(Kenkyū-buntansha) 佐藤 尚  名古屋工業大学, 工学(系)研究科(研究院), 准教授 (50402649)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2021: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2020: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2019: ¥10,920,000 (Direct Cost: ¥8,400,000、Indirect Cost: ¥2,520,000)
Keywords再結晶 / 集合組織 / メカノケミカル / 塑性変形 / 界面 / 層状化合物 / その場観察 / 界面エネルギ
Outline of Research at the Start

金属中の原子配列の制御法として、微細析出物や焼鈍雰囲気による再結晶過程の制御手法がこれまで研究されてきた。しかしながら、鉄粒子表面に付着した層状化合物によっても、一次再結晶過程を制御できることが見出された。この一次再結晶過程に対する層状化合物の作用は、層状化合物と鉄粒子表面の接触界面のエネルギーに基づくものと考えられる。本研究では、本エネルギーの存在の証明に挑み、ひずみ・粒界・表面エネルギーに続く第四の結晶成長の駆動力源を見出す。

Outline of Final Research Achievements

It is believed that there are three type of driving forces for metal recrystallization: strain, grain boundary, and surface energy. In this study, we examined whether the fourth driving force could exist as the interfacial energy between metal surface and the attached material. Flake iron particles were prepared in oil and with layered compounds such as graphite and boron nitride. The particles were then heat treated and their surfaces were observed. The results showed that the thermal grooves on the surface of the iron particles milled with layered compounds shallower. This indicates the existence of the interfacial energy, which changed the equilibrium between surface energy and grain boundary energy, thereby changing the depth of the thermal grooves.

Academic Significance and Societal Importance of the Research Achievements

金属の再結晶の駆動力はひずみ、粒界、表面エネルギーの三つがあると考えられてきた。このエネルギーを利用しながら熱処理することで、モーターなどに用いられる電磁鋼板の電磁気特性が改善され、省エネ化を実現できる。今回、四番目の界面エネルギーの存在が明らかとなったことで、金属表面の付着物によって再結晶の駆動力を制御し、より高度な再結晶組織制御ができる可能性がある。

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (11 results)

All 2022 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 2 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results) Book (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Fundamental study on the mechanical strength of soft magnetic composite prepared by ultra-high aspect ratio flake iron powder using ball-milling process2021

    • Author(s)
      Ohba Koki、Tanaka Mizuki、Motozuka Satoshi、Noda Daichi、Shibahara Mai、Kawauchi Takehiro
    • Journal Title

      Powder Metallurgy

      Volume: 0 Issue: 3 Pages: 1-6

    • DOI

      10.1080/00325899.2021.2013622

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Preparation of flake-shaped Fe-based nanocrystalline soft magnetic alloy particles subjected to plastic deformation2021

    • Author(s)
      Motozuka Satoshi、Sato Hisashi、Kuwata Hidenori、Bito Mitsuo、Okazaki Yasuo
    • Journal Title

      Philosophical Magazine Letters

      Volume: 101 Issue: 10 Pages: 399-407

    • DOI

      10.1080/09500839.2021.1953713

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Effect of lubricant milling aids on the recrystallization behavior and magnetic properties of ball-milled iron powders having (0 0 1) fiber texture for soft magnetic composite2021

    • Author(s)
      Satoshi Motozuka, Yuki Mako, Hisashi Sato, Hirofumi Hojo, Yasuo Okazaki
    • Journal Title

      Journal of Magnetism and Magnetic Materials

      Volume: 521 Pages: 167548-167548

    • DOI

      10.1016/j.jmmm.2020.167548

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Interfacial effect between graphite and iron substrate on basal plane orientation and lubricity of graphite2020

    • Author(s)
      Satoshi Motozuka, Hisashi Sato, Yuji Muramatsu, Masahiko Morinaga
    • Journal Title

      Tribology International

      Volume: 151 Pages: 106455-106455

    • DOI

      10.1016/j.triboint.2020.106455

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] ボールミルで薄く偏平化した鉄粒子の再結晶挙動の解明2021

    • Author(s)
      本塚智、長谷颯登、佐藤尚、小貫祐介
    • Organizer
      第4回金属・無機・有機材料の結晶方位解析と応用技術研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 集合組織を有する鉄粉の再結晶過程の解明2021

    • Author(s)
      本塚智、佐藤尚
    • Organizer
      日本鉄鋼協会第180回秋季講演大会シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] Effect of surface substance on recrystallization and grain-growth behavior of {001} deformation texture in platelet iron particles2019

    • Author(s)
      Satoshi Motozuka
    • Organizer
      7th International Conference on Recrystallization and Grain Growth
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 磁化容易軸を制御した純鉄系磁性粉末の創出とその評価2019

    • Author(s)
      本塚 智
    • Organizer
      日本金属学会・日本鉄鋼協会・第76回若手材料研究会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 粉砕による純鉄粒子の高機能化とそれを支えるメカノケミカル反応2019

    • Author(s)
      本塚 智
    • Organizer
      粉体工学会・第54回技術討論会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Book] 次世代EV/HEV用モータの高出力化と関連材料の開発2022

    • Author(s)
      本塚智、佐藤尚、加藤克司、牧野秀樹、小森雅晴、山本真義、平山悠介、大橋健、広沢哲、山口勉功、田中康寛、本郷武延、森本茂雄、藤崎敬介、高下拓也、太田元基、尾藤三津男、村川鉄州、柳井武志、高橋有紀子
    • Total Pages
      673
    • Publisher
      技術情報協会
    • ISBN
      9784861048692
    • Related Report
      2021 Annual Research Report
  • [Patent(Industrial Property Rights)] 扁平金属粒子およびその製造方法、ならびに圧粉鉄心およびその製造方法2021

    • Inventor(s)
      本塚智、佐藤尚
    • Industrial Property Rights Holder
      本塚智、佐藤尚
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-046881
    • Filing Date
      2021
    • Related Report
      2021 Annual Research Report

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Published: 2019-04-18   Modified: 2024-01-30  

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