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Physical and mechanical properties of the brittle cementite phase in a confined volume

Research Project

Project/Area Number 16H04516
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Structural/Functional materials
Research InstitutionTohoku University (2017-2018)
Kyoto University (2016)

Principal Investigator

Okamoto Norihiko  東北大学, 金属材料研究所, 准教授 (60505692)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2018: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2016: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
Keywords脆性材料 / セメンタイト / サイズ効果 / 塑性変形 / サイズ硬化 / 多層薄膜構造
Outline of Final Research Achievements

In order to clarify the origin of the deformability of the brittle cementite phase in the pearlite microstructure, consisting of the cementite and ferrite phases, we have investigated the physical and mechanical properties of single crystals of the cementite phase in a confined volume, with the aid of microscale fabrication and testing techniques. We have elucidated that many slip systems are operative in the cementite phase even at room temperature via single-crystal micropillar compression. We have successfully determined some of the single-crystal elastic constants via inelastic X-ray scattering.

Academic Significance and Societal Importance of the Research Achievements

フェライト相とセメンタイト相のラメラ状組織であるパーライトは工業的に最も重要な脆性/延性積層構造であると言える.本研究では,非常に高い応力レベルでありながらも多数のすべり系がセメンタイト相内で活動可能であることを明らかにし,フェライト層間に拘束された状態でなくとも,微小なサイズ領域ではセメンタイト相が本質的に塑性変形可能であることを明らかにした.本研究で得られた知見はパーライト鋼だけでなく,合金化溶融亜鉛めっき鋼板など同様の脆性/延性積層構造体にも応用できると考えられ,工業的・実用的意義も大きい.

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (42 results)

All 2019 2018 2017 2016 Other

All Journal Article (12 results) (of which Peer Reviewed: 12 results,  Acknowledgement Compliant: 1 results) Presentation (26 results) (of which Int'l Joint Research: 16 results,  Invited: 5 results) Book (1 results) Remarks (3 results)

  • [Journal Article] Fracture Toughness of the Fe–Zn Intermetallic Compounds Measured by Bend Testing of Chevron-Notched Single-Crystal Microbeams2018

    • Author(s)
      Okamoto Norihiko L.、Michishita Shota、Hashizume Yukichika、Inui Haruyuki
    • Journal Title

      ISIJ International

      Volume: 58 Issue: 9 Pages: 1569-1577

    • DOI

      10.2355/isijinternational.ISIJINT-2018-068

    • NAID

      130007484809

    • ISSN
      0915-1559, 1347-5460
    • Year and Date
      2018-09-15
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Crystal Structures and Mechanical Properties of Fe–Zn Intermetallic Compounds Formed in the Coating Layer of Galvannealed Steels2018

    • Author(s)
      Inui Haruyuki、Okamoto Norihiko L.、Yamaguchi Shu
    • Journal Title

      ISIJ International

      Volume: 58 Issue: 9 Pages: 1550-1561

    • DOI

      10.2355/isijinternational.ISIJINT-2018-066

    • NAID

      130007484895

    • ISSN
      0915-1559, 1347-5460
    • Year and Date
      2018-09-15
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Crystal Structure Refinement of the Γ- and Γ 1 -Phase Compounds in the Fe-Zn System and Orientation Relationships Among α-Fe, Γ and Γ 1 Phases in the Coating Layer of Galvannealed Steel2018

    • Author(s)
      Norihiko L. Okamoto, Masahiro Inomoto, Hiroshi Takebayashi, Haruyuki Inui
    • Journal Title

      Journal of Alloys and Compounds

      Volume: 732 Pages: 52-63

    • DOI

      10.1016/j.jallcom.2017.10.146

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anisotropic plastic deformation of single crystals of the MAX phase compound Ti3SiC2 investigated by micropillar compression2018

    • Author(s)
      Higashi Masaya、Momono Shogo、Kishida Kyosuke、Okamoto Norihiko L.、Inui Haruyuki
    • Journal Title

      Acta Materialia

      Volume: 161 Pages: 161-170

    • DOI

      10.1016/j.actamat.2018.09.024

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Crystal Structures and Mechanical Properties of the Intermetallic Compounds in the Fe-Zn System Comprising the Coating of Galvannealed Steel Sheets2018

    • Author(s)
      Okamoto Norihiko L.、Inui Haruyuki
    • Journal Title

      Materia Japan

      Volume: 57 Issue: 4 Pages: 169-175

    • DOI

      10.2320/materia.57.169

    • NAID

      130006601968

    • ISSN
      1340-2625, 1884-5843
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural Changes in Galvannealed Coating during Hot-stamping Heating2018

    • Author(s)
      Sengoku Akihiro、Takebayashi Hiroshi、Okamoto Norihiko、Inui Haruyuki
    • Journal Title

      Tetsu-to-Hagane

      Volume: 104 Issue: 6 Pages: 331-337

    • DOI

      10.2355/tetsutohagane.TETSU-2017-100

    • NAID

      130007378488

    • ISSN
      0021-1575, 1883-2954
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] FCC Metal-Like Deformation Behaviour of Ir 3 Nb with the L1 2 Structure2017

    • Author(s)
      Norihiko L. Okamoto, Shohei Takemoto, Zhenghao M.T. Chen, Masatake Yamaguchi, Haruyuki Inui
    • Journal Title

      International Journal of Plasticity

      Volume: 97 Pages: 145-158

    • DOI

      10.1016/j.ijplas.2017.05.013

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Crystal Structure and Mechanical Properties of Intermetallic Compounds in the Fe-Zn System in the Coat Layer of Galvanized Steel2017

    • Author(s)
      Haruyuki Inui, Norihiko L. Okamoto
    • Journal Title

      GALVATECH 2017

      Volume: 1 Pages: 6-10

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Microscale Deformation of the Γ and δ1p Phases in the Fe-Zn System2017

    • Author(s)
      Yukichika Hashizume, Norihiko L. Okamoto, Haruyuki Inui
    • Journal Title

      GALVATECH 2017

      Volume: 1 Pages: 981-985

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Plastic Deformation and Fracture Behavior of Single Crystals of the Intermetallic Compounds in the Fe-Zn System2017

    • Author(s)
      Norihiko L. Okamoto, Yukichika Hashizume, Shota Michishita, Haruyuki
    • Journal Title

      GALVATECH 2017

      Volume: 1 Pages: 200-203

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 1.Crystal Structure of η’-Fe3Al8; Low-Temperature Phase of η-Fe2Al5 Accompanied by an Ordered Arrangement of Al Atoms of Full Occupancy in the C-axis Chain Sites2017

    • Author(s)
      Norihiko L. Okamoto, Jumpei Okumura, Masaya Higashi, and Haruyuki Inui
    • Journal Title

      Acta Materialia

      Volume: 129 Pages: 290-299

    • DOI

      10.1016/j.actamat.2017.02.060

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] 2.Micropillar Compression Deformation of Single Crystals of Co3(Al,W) with the L12 Structure2016

    • Author(s)
      Zhenghao M. T. Chen, Norihiko L. Okamoto, Masahiko Demura and Haruyuki Inui
    • Journal Title

      Scripta Materialia

      Volume: 121 Pages: 28-31

    • DOI

      10.1016/j.scriptamat.2016.04.029

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Presentation] Ti3SiC2 MAX相単結晶のマイクロピラー圧縮変形2019

    • Author(s)
      岸田 恭輔, 東 雅也, 桃野 将伍, 岡本 範彦, 乾 晴行
    • Organizer
      日本金属学会第162回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] η-Fe2Al5相単結晶熱電特性の結晶方位依存性2019

    • Author(s)
      藤原 浩輔, 岡本 範彦, 市坪 哲
    • Organizer
      日本金属学会第162回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 耐酸化性を有するCo基超合金の合金設計2019

    • Author(s)
      陳 正昊, 岡本 範彦, 乾 晴行
    • Organizer
      日本金属学会第162回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] An Attempt to Design a New Class of Co-Based Superalloy with Improved Oxidation Resistance and Creep Property2018

    • Author(s)
      Zhenghao M. Chen, Norihiko L. Okamoto, and Haruyuki Inui
    • Organizer
      Materials Research Society Fall Meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ti-V合金の低温における微細なω相の形成とそれを利用したα相析出強化の検討2018

    • Author(s)
      笠谷 周平, Martin Luckabauer, 岡本 範彦, 多根 正和, 市坪 哲
    • Organizer
      日本金属学会第161回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] L12-Fe3Geマイクロピラー単結晶圧縮試験2018

    • Author(s)
      陳 正昊, 岡本 範彦, 乾 晴行
    • Organizer
      日本金属学会第161回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] マイクロピラー変形試験による格子欠陥挙動解析の最前線2018

    • Author(s)
      岡本範彦, 乾 晴行
    • Organizer
      第65回応用物理学会春季学術講演会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Compression Testing of Single Crystals of β-Si3N4 on Micron Meter Scale by Means of FIB Machining Combined with EBSD Orientation Mapping2018

    • Author(s)
      Nobuyuki Kadota, Haruyuki Inui, Norihiko Okamoto, Isao Tanaka, You Zhou, Hideki Hyuga, Kiyoshi Hirao
    • Organizer
      TMS 2018 Annual Meeting & Exhibition
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] セメンタイト単結晶のマイクロピラー圧縮変形2018

    • Author(s)
      門田 信幸, 岡本 範彦, 岸田 恭輔, 乾 晴行, Wei CHEN, Peng ZHOU
    • Organizer
      日本金属学会第160回大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] η-Fe2Al5相Fe-rich側の低温規則相η’’相の結晶構造精密化2018

    • Author(s)
      岡本範彦, 市坪 哲, 東 雅也, 乾 晴行
    • Organizer
      日本金属学会第160回大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Plastic Deformation and Fracture Behavior of Single Crystals of the Intermetallic Compounds in the Fe-Zn System2017

    • Author(s)
      Norihiko L. Okamoto, Yukichika Hashizume, Shota Michishita, Haruyuki Inui
    • Organizer
      Galvatech2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Crystal structure and mechanical properties of intermetallic compounds in the Fe-Zn system in the coat layer of Galvanized steel2017

    • Author(s)
      Haruyuki Inui, Norihiko L. Okamoto
    • Organizer
      Galvatech2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Ambient-temperature plasticity of brittle intermetallics at micron-meter size scales2017

    • Author(s)
      Haruyuki Inui, Norihiko L. Okamoto, Kyosuke Kishida
    • Organizer
      Intermetallics Conference 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Microscale Deformation and Fracture of the Γ and δ1p Phases in the Fe-Zn System2017

    • Author(s)
      Yukichika Hashizume, Norihiko L. Okamoto, Haruyuki Inui
    • Organizer
      Galvatech2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Low-Temperature Phase of η-Fe2Al5 with an Ordered Arrangement of Aluminium Atoms in the C-Axis Chain Sites2017

    • Author(s)
      Norihiko L. Okamoto Masaya Higashi, Jumpei Okumura, Haruyuki Inui
    • Organizer
      Intermetallics Conference 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Creep Properties of Co-based Superalloys with Improved Oxidation Resistance2017

    • Author(s)
      Zhenghao M.T. Chen, Norihiko L. Okamoto, Haruyuki Inui
    • Organizer
      Intermetallics Conference 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] GA鋼板のめっき被膜を構成するFe-Zn(-Al)系金属間化合物の結晶構造解析2017

    • Author(s)
      岡本範彦, 乾 晴行
    • Organizer
      日本金属学会第159回大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 9.合金化溶融亜鉛めっき鋼板の被膜を構成するFe-Zn系金属間化合物相の微小単結晶変形・破壊試験2017

    • Author(s)
      岡本範彦, 橋爪志周, 道下勝太, 乾晴行
    • Organizer
      日本鉄鋼協会第173回秋季講演大会
    • Place of Presentation
      首都大学東京
    • Related Report
      2016 Annual Research Report
  • [Presentation] 7.Compression Deformation of Single-Crystal Micropillars of L12-Co3(Al,W)2016

    • Author(s)
      Zhenghao M. T. Chin, Norihiko L. Okamoto and Haruyuki Inui
    • Organizer
      PRICM9
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2016-08-01
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 8.Plastic Deformation of Single Crystals of Iridium2016

    • Author(s)
      Yukihiro Higashino, Norihiko L. Okamoto, Haruyuki Inui
    • Organizer
      THERMEC 2016
    • Place of Presentation
      Graz, Austria
    • Year and Date
      2016-05-20
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 1.Micropillar Testing as a New Tool to Investigate Fundamentals of Plastic Deformation in Brittle Intermetallics2016

    • Author(s)
      Haruyuki Inui, Kyosuke Kishida and Norihiko L. Okamoto
    • Organizer
      Materials Research Society Fall Meeting
    • Place of Presentation
      Boston, MA
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 2.Behavior of Fe-Centered Zn12 Icosahedra in the Plastic Deformation of Fe-Zn Intermetallic Compounds Constituting the Coating Layer of Galvannealed Steels2016

    • Author(s)
      Norihiko L. Okamoto, Masahiro Inomoto, Haruyuki Inui
    • Organizer
      Materials Research Society Fall Meeting
    • Place of Presentation
      Boston, MA
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 3.Icosahedral Cluster Arrangements in Dislocation Cores and Stacking Faults in Complex Fe-Zn Intermetallic Compounds2016

    • Author(s)
      Norihiko L. Okamoto, Masahiro Inomoto, Haruyuki Inui
    • Organizer
      Materials Research Society Fall Meeting
    • Place of Presentation
      Boston, MA
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 4.Effect of Alloying Elements on Yield Stress Anomaly and High Temperature Deformation Mechanisms of the L12 Strengthening Phase in a New Class of Co-base Superalloys2016

    • Author(s)
      Zhenghao M. T. Chen, Norihiko L. Okamoto and Haruyuki Inui
    • Organizer
      Materials Research Society Fall Meeting
    • Place of Presentation
      Boston, MA
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 5.Compression Deformation of Single-Crystal Micropillars of the δ1p Phase in the Fe-Zn System2016

    • Author(s)
      Yukichika Hashizume, Shota Michishita, Norihiko L. Okamoto, Haruyuki Inui
    • Organizer
      Materials Research Society Fall Meeting
    • Place of Presentation
      Boston, MA
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 6.Micropillar Compression of Single Crystals of a MAX Phase Ti3SiC22016

    • Author(s)
      Masaya Higashi, Shogo Momono, Kyosuke Kishida, Norihiko L. Okamoto and Haruyuki Inui
    • Organizer
      Materials Research Society Fall Meeting
    • Place of Presentation
      Boston, MA
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Book] 公益財団法人JFE21世紀財団2017

    • Author(s)
      岡本範彦
    • Total Pages
      8
    • Publisher
      1.脆性セメンタイト相の微小体積力学特性 -パーライト変形能の起源解明を目指して
    • Related Report
      2016 Annual Research Report
  • [Remarks] 研究代表者個人ホームページ

    • URL

      http://nlokamoto.web.fc2.com/

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report 2016 Annual Research Report
  • [Remarks] 研究代表者所属研究室ホームページ

    • URL

      http://ilab.imr.tohoku.ac.jp/index.html

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
  • [Remarks] 研究代表者所属研究室ホームページ

    • URL

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

    • Related Report
      2016 Annual Research Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

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