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In-situ measurement of dislocation behavior under ultrafast strain rate deformation

Research Project

Project/Area Number 16K14417
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Structural/Functional materials
Research InstitutionOsaka University

Principal Investigator

Sano Tomokazu  大阪大学, 工学研究科, 准教授 (30314371)

Research Collaborator Arakawa Kazuto  
Inubushi Yuichi  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords転位挙動 / 超高速変形 / フェムト秒レーザ / ピーニング / X線自由電子レーザー / フェムト秒レーザー駆動衝撃波 / 超高ひずみ速度変形 / 転位密度 / 転位核生成 / 超音速転位
Outline of Final Research Achievements

We constructed an in-situ measurement system for femtosecond laser-driven shock compression phenomena at the X-ray free electron laser facility SACLA built at Harima Office, RIKEN. We measured in-situ lattice strain at an early stage of femtosecond laser-induced shock wave compression of pure iron which is a BCC structure, bulk nano iron whose crystal grain size is reduced to nanometer order by severe plastic deformation, and pure nickel which is FCC structure. As a result, it was shown that the mechanism of plasticity generation is different from that of the conventional method under ultrafast strain-rate deformation.

Academic Significance and Societal Importance of the Research Achievements

これまでに無かった新しい塑性変形機構を提唱出来、この機構を利用することによって、これまで従来法では強化することが難しかった材料の強化が可能になった。例えば、CO2削減のため自動車の軽量化が進められており、このことを実現するために軽量で高強度である高張力鋼板が用いられている。ところが、この高張力鋼板を後処理でさらに強度を上げることは極めて難しい。その理由は、既に臨界密度に近い転位を内在しているためである。本研究によって、転位を効率的に追加することが出来るようになり、マクロ的にはさらなる高強度化が見込まれた。

Report

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

    (25 results)

All 2018 2017 2016 Other

All Int'l Joint Research (7 results) Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (14 results) (of which Int'l Joint Research: 9 results,  Invited: 5 results)

  • [Int'l Joint Research] University of Nevada, Reno/University of Cincinnati(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Ljubljana(スロベニア)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Czech Academy of Sciences(チェコ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Nevada, Reno(米国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] University of Ljubljana(スロベニア)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] HiLASE(チェコ)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] University of Nevada, Reno(米国)

    • Related Report
      2016 Research-status Report
  • [Journal Article] Femtosecond Laser Peening of Friction Stir Welded 7075-T73 Aluminum Alloys2018

    • Author(s)
      Kawashima Terumasa、Sano Tomokazu、Hirose Akio、Tsutsumi Seiichiro、Masaki Kiyotaka、Arakawa Kazuto、Hori Hisashi
    • Journal Title

      Journal of Materials Processing Technology

      Volume: 262 Pages: 111-122

    • DOI

      10.1016/j.jmatprotec.2018.06.022

    • NAID

      130006259269

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Improvement of corrosion resistance of AA2024-T3 using femtosecond laser peening without protective and confining medium2018

    • Author(s)
      Trdan Uros、Sano Tomokazu、Klobcar Damjan、Sano Yuji、Grum Janez、Sturm Roman
    • Journal Title

      Corrosion Science

      Volume: 143 Pages: 46-55

    • DOI

      10.1016/j.corsci.2018.08.030

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dynamic Thermo-Elasto-Plasticity FE Analysis on Nano- and Femto-second Laser Shock Peenings for a Ferrite Material2017

    • Author(s)
      Seiichiro Tsutsumi, Kazushi Ueda, Reccardo Fincato, and Tomokazu Sano
    • Journal Title

      QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

      Volume: 35 Issue: 2 Pages: 151s-154s

    • DOI

      10.2207/qjjws.35.151s

    • NAID

      130006329354

    • ISSN
      0288-4771, 2434-8252
    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] FEMTOSECOND LASER PEENING OF 2024 ALUMINUM ALLOY WITHOUT A SACRIFICIAL OVERLAY UNDER ATMOSPHERIC CONDITIONS2017

    • Author(s)
      Tomokazu Sano, Takayuki Eimura, Ryota Kashiwabara, Tomoki Matsuda, Yutaro Isshiki, Akio Hirose, Seiichiro Tsutsumi, Kazuto Arakawa, Tadafumi Hashimoto, Kiyotaka Masaki, and Yuji Sano
    • Journal Title

      Journal of Laser Applications

      Volume: 29 Issue: 1 Pages: 1-7

    • DOI

      10.2351/1.4967013

    • NAID

      120006352342

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Ultrafast Sstructural Behavior in Shock-compressed Iron Probed Using XFEL2018

    • Author(s)
      Tomokazu Sano
    • Organizer
      Materials Science & Technology 2018 (MS&T18)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] フェムト秒レーザアブレーション中の鉄の格子ひずみのXFELによるその場計測2018

    • Author(s)
      佐野智一
    • Organizer
      第2回レーザー学会「ユビキタス・パワーレーザー」専門委員会・第2回科学技術交流財団「マイクロ固体フォトニクス」研究会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] ドライレーザピーニングによるアルミニウム溶接継手の疲労特性向上:放射光X線による非破壊ひずみ計測とXFELによる動的ひずみ計測2018

    • Author(s)
      佐野智一
    • Organizer
      社団法人日本材料学会 第335回疲労強度部門委員会・第189回X線材料強度部門委員会「合同部門委員会」
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Improvement of fatigue properties of friction stir welded 2024 aluminum alloy using femtosecond laser peening2017

    • Author(s)
      Tomokazu Sano, Takayuki Eimura, Akio Hirose, Seiichiro Tsutsumi, Kiyotaka Masaki, Ayumi Shiro, Takahisa Shobu, Hisashi Hori
    • Organizer
      3rd INTERNATIONAL CONFERENCE ON FRICTION BASED PROCESSES (ICFP2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Femtosecond Laser Peening without a Sacrificial Overlay under Atmospheric Conditions for Improving Fatigue Properties of Laser-welded and FSWed 2024 Aluminum Alloys2017

    • Author(s)
      Tomokazu Sano, Takayuki Eimura, Akio Hirose, Seiichiro Tsutsumi, Yousuke Kawahito, Seiji Katayama, Kazuto Arakawa, Hisashi Hori, Kiyotaka Masaki, Ayumi Shiro, Takahisa Shobu
    • Organizer
      Materials Science & Technology 2017 (MS&T17)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Improvement of Fatigue Properties of Friction Stir Welded 7075-T73 Aluminum Alloy Using Femtosecond Laser Peening2017

    • Author(s)
      Terumasa Kawashima, Tomokazu Sano, Akio Hirose, Seiichiro Tsutsumi, Kiyotaka Masaki, Hisashi Hori
    • Organizer
      Materials Science & Technology 2017 (MS&T17)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] DRY LASER PEENING TECHNIQUE: Femtosecond Laser Peening without a Sacrificial Overlay under Atmospheric Conditions2017

    • Author(s)
      T. Sano
    • Organizer
      OSA Laser Congress 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] A NEW LASER PEENING TECHNIQUE: Femtosecond Laser Peening without a Sacrificial Overlay under Atmospheric Conditions2017

    • Author(s)
      T. Sano
    • Organizer
      13th International Conference on Shot Peening
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] アルミニウム合金7075の摩擦攪拌接合継手のフェムト秒レーザピーニング2017

    • Author(s)
      川嶋光将, 佐野智一, 廣瀬明夫, 堤成一郎, 政木清孝, 堀久司
    • Organizer
      (一社)溶接学会平成29年度秋季全国大会
    • Related Report
      2017 Research-status Report
  • [Presentation] DRY LASER PEENING TECHNIQUE: Femtosecond Laser Peening without a Sacrificial Overlay under Atmospheric Conditions for Improving Fatigue Properties of Weld Joints2017

    • Author(s)
      T. Sano
    • Organizer
      70th IIW Annual Assembly and International Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 超短パルスレーザー駆動衝撃波が拓く新しい材料科学・工学 ~新物質創成と機械的特性向上~2017

    • Author(s)
      佐野智一
    • Organizer
      第9回レーザー学会「マイクロ固体フォトニクス」専門委員会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Improving Fatigue Properties of Laser Welded 2024 Aluminum Alloy using Femtosecond Laser Peening2017

    • Author(s)
      Tomokazu Sano, Takayuki Eimura, Akio Hirose, Seiichiro Tsutsumi, Yousuke Kawahito, Seiji Katayama, Kazuto Arakawa, Ayumi Shiro, Takahisa Shobu, Kiyotaka Masaki, Yuji Sano
    • Organizer
      The 18th International Symposium on Laser Precision Microfabrication (LPM2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] フェムト秒レーザー衝撃圧縮された金属中の格子歪みのその場X線自由電子レーザー回折計測2017

    • Author(s)
      佐野智一
    • Organizer
      2017年第64回応用物理学会春季学術講演会
    • Place of Presentation
      パシフィコ横浜
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Ultrafast lattice dynamics at an early stage of shock compression of iron2016

    • Author(s)
      T. Sano
    • Organizer
      9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM9)
    • Place of Presentation
      京都国際会議場
    • Year and Date
      2016-08-01
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2022-02-21  

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