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The direct observation of lattice distortion using aberration corrected high-resolution transmission electron microscope

Research Project

Project/Area Number 24686079
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypePartial Multi-year Fund
Research Field Structural/Functional materials
Research InstitutionKyushu University

Principal Investigator

TANAKA Masaki  九州大学, 工学(系)研究科(研究院), 准教授 (40452809)

Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥23,790,000 (Direct Cost: ¥18,300,000、Indirect Cost: ¥5,490,000)
Fiscal Year 2014: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2012: ¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Keywords転位 / 電子顕微鏡 / 破壊 / 高分解能透過電子顕微鏡法 / 亀裂 / HRTEM / 弾性歪 / GPA
Outline of Final Research Achievements

Fracture of materials induces catastrophic accident so that it is essential to prevent the fracture in order to increase the reliability of the materials in use. In this study, the stress field which is due to the internal stress of dislocations was obtained around a crack tip, measuring the shift of lattice points from their equilibrium positions. The existence of shielding field which is theoretically expected around the crack tip was experimentally cleared in an atomistic scale.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • Research Products

    (13 results)

All 2015 2014 2013 2012

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (10 results) (of which Invited: 1 results)

  • [Journal Article] Enhancement of Low Temperature Toughness in Bulk Nanostructured Metals2013

    • Author(s)
      M. Tanaka, S. Takano and K. Higashida
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 54 Issue: 9 Pages: 1624-1628

    • DOI

      10.2320/matertrans.MH201319

    • NAID

      10031194646

    • ISSN
      1345-9678, 1347-5320
    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A multiscale approach for the deformation mechanism in pearlite microstructure2013

    • Author(s)
      T. Ohashi, L. Roslan, K. Takahashi, T. Shimokawa, M. Tanaka and K. Higashida
    • Journal Title

      Mater. Sci. Eng. A

      Volume: 588 Pages: 214-220

    • DOI

      10.1016/j.msea.2013.09.032

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Multiscale Approach for the Deformation Mechanism in Pearlite Microstructure: Experimental Measurements of Strain Distribution using a Novel Technique of Precision Markers2013

    • Author(s)
      M. Tanaka, Y. Yoshimi, K. Higashida, T. Shimokawa and T. Ohashi
    • Journal Title

      Materials Science and Engineering: A

      Volume: 590 Pages: 37-43

    • DOI

      10.1016/j.msea.2013.09.072

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Presentation] 超高圧電子顕微鏡によるSi結晶中の亀裂先端転位三次元構造解析2015

    • Author(s)
      田中將己, 定松直, 東田賢二
    • Organizer
      日本学術振興会第161委員会第90回研究会
    • Place of Presentation
      九州大学
    • Year and Date
      2015-03-05
    • Related Report
      2014 Annual Research Report
  • [Presentation] Crack tip shielding effect observed with HRTEM2014

    • Author(s)
      D.R. Adhika, M. Tanaka, T. Daio, K. Higashida
    • Organizer
      The 9th Postech-KIMS-SNU-Kyushu University Symposium
    • Place of Presentation
      Ohita
    • Year and Date
      2014-12-22 – 2014-12-24
    • Related Report
      2014 Annual Research Report
  • [Presentation] Crack-tip dislocations characterised with HVEM tomography2014

    • Author(s)
      D.R. Adhika, M. Tanaka, T. Daio, K. Higashida
    • Organizer
      Opening International Symposium, Nex-Generation Microscopic Science
    • Place of Presentation
      Awaji Island
    • Year and Date
      2014-11-03 – 2014-11-04
    • Related Report
      2014 Annual Research Report
  • [Presentation] 超高圧電子顕微鏡による格子欠陥の3次元構造解析2013

    • Author(s)
      田中將己
    • Organizer
      日本鉄鋼協会第165回春季講演大会
    • Place of Presentation
      東京電気大学
    • Year and Date
      2013-03-29
    • Related Report
      2012 Annual Research Report
  • [Presentation] Multiplication process of crack tip dislocations revealed with HVEM-tomography2013

    • Author(s)
      M. Tanaka, K. Higashida
    • Organizer
      The International Union of Materials Research Societies - International Conference in Asia 2013 (IUMRS-ICA-2013)
    • Place of Presentation
      Indian Institue of Science, Bangalore, India
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Strain field around dislocations in silicon mesured by GPA2013

    • Author(s)
      D. Adhika, M. Tanaka, T. Yamamoto, K. Higashida
    • Organizer
      第55回日本顕微鏡学会九州支部学術講演会
    • Place of Presentation
      九州大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] Crack-tip dislocations characterised with HVEM tomography2013

    • Author(s)
      M. Tanaka, K. Higashida
    • Organizer
      Electron Microscopy & Multiscale Modeling 2013 (EMMM2013)
    • Place of Presentation
      Kyoto University
    • Related Report
      2013 Annual Research Report
  • [Presentation] HVEM-Tomography による亀裂先端転位増殖機構の解明2013

    • Author(s)
      田中將己, 田中大樹, 定松直, 東田賢二
    • Organizer
      日本機械学会M&M2013材料力学カンファレンス
    • Place of Presentation
      岐阜大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] 収差補正付き電子顕微鏡を用いた転位近傍の弾性ひずみ測定2012

    • Author(s)
      井上誠介
    • Organizer
      第54回日本顕微鏡学会九州支部学術講演会
    • Place of Presentation
      豊泉荘
    • Year and Date
      2012-11-10
    • Related Report
      2012 Annual Research Report
  • [Presentation] 超高圧電子顕微鏡による格子欠陥の3次元構造解析2012

    • Author(s)
      田中將己
    • Organizer
      日本機械学会M&M2012材料力学カンファレンス
    • Place of Presentation
      愛媛大学
    • Year and Date
      2012-09-22
    • Related Report
      2012 Annual Research Report

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Published: 2012-04-24   Modified: 2019-07-29  

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