• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Experimental and theoretical approach for mobile defect clusters introduced under heavy ion irradiations

Research Project

Project/Area Number 18560801
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Nuclear engineering
Research InstitutionThe University of Tokyo

Principal Investigator

ABE Hiroaki  The University of Tokyo, Graduate School of Engineering, Professor (40343925)

Co-Investigator(Kenkyū-buntansha) SEKIMURA Naoto  The University of Tokyo, Graduate School of Engineering, Associate Professor (10183055)
IWAI Takeo  The University of Tokyo, Graduate School of Engineering, Research Associate (30272529)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥3,610,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥210,000)
Fiscal Year 2007: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2006: ¥2,700,000 (Direct Cost: ¥2,700,000)
Keywordselectron microscopy / ion accelerator / displacement cascade / molecular dynamics / coherent precipitate / crowdion / copper / copper-cobalt alloy / 電子顕微鏡 / 銅 / 金
Research Abstract

Irradiation with ions and/or neutrons deteriorates properties of materials introducing lattice defects. One of the typical defects is displacement cascades in which "spontaneously melted" volumes are generated leaving point defects. The recent study on the displacement cascades revealed that bundles of interstitial atoms (crowdion bundles) are formed in the cascade process and may travel in the matrix with low activation energy. The defects are presumed to accumulate at defects such as grain boundary, precipitates, dislocations etc, inducing decorations and diffusion or retarding dislocation motion. In this work, the effects of the crowdion bundles on the microstructure evolution are investigated.
This work consists of (1) in-situ observations in a transmission electron microscope (TEM) interfaced with an ion accelerator and (2) cross section TEM in ion-irradiated materials.
(1) Electron transparency of fully-annealed copper and gold were prepared and set in the TEM for ion irradiations with heavy ions at the temperature from 670 to 870 K. Mobile defects associated with displacement cascades were observed. The typical traveling distance ranges 20 to 140 nm, however the upper limit was due to the limitation of observation area. The lifetime and the direction of mobility were systematically analyzed, and the formation of crowdion-type interstitial bundle was concluded.
(2) Coherent-to-incoherent transition of strain contrast of coherent precipitates in dilute Cu-Co system was observed upon ion irradiation. The effect propagated over the range of ions, strongly indicating diffusion of crowdion bundles which is concluded by fluence, flux and temperature dependences.
The above results were summarized as two research papers and an international conference in the fiscal year of 2007.

Report

(3 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • Research Products

    (16 results)

All 2008 2007 2006 Other

All Journal Article (13 results) (of which Peer Reviewed: 5 results) Presentation (3 results)

  • [Journal Article] Transmission electron microscopic investigations on diffusion of point defects and their clusters in a dilute Cu-Co alloy irradiated with Cu ions2008

    • Author(s)
      H. Abe, Z. Li, N. Sekimura and S. J. Zinkle
    • Journal Title

      Journal of Nuclear Materials (掲載確定)(印刷中)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Transmission electron microscopic investigations on diffusion of point defects and their clusters in a dilute Cu-Co alloy irradiated with Cu ions2008

    • Author(s)
      H. Abe, Z. Li, N. Sekimura and S. J. Zinkle
    • Journal Title

      Journal of Nuclear Materials (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Internal probe to detect defects from cascades-In-situ ion irradiation experiments revisited2007

    • Author(s)
      S. Ishino, N. Sekimura, H. Abe
    • Journal Title

      Journal of ASTM International 4

      Pages: 100644-100644

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Detection of point defects upon irradiation by means of precipitate coherency2007

    • Author(s)
      Z.C. Li, H. Abe and N. Sekimura
    • Journal Title

      Journal of Nuclear Material 362

      Pages: 218-222

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Detection of point defects upon ion irradiation by means of precipitate coherency2007

    • Author(s)
      Z. C. Li, H. Abe and N. Sekimura
    • Journal Title

      Journal of Nuclear Materials 362

      Pages: 218-222

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Detection of point defects upon ion irradiation by means of precipitate coherency2007

    • Author(s)
      Z.C. Li, H. Abe and N. Sekimura
    • Journal Title

      Journal of Nuclear Materials 362

      Pages: 87-92

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 表面酸化させたジルカロイの放射線誘起表面活性現象2007

    • Author(s)
      仮屋崎誠、阿部弘亨, 佐谷野顕生、鹿野文寿, 片野吉男, 鬼塚貴志, 関村直人
    • Journal Title

      日本金属学会誌 71

      Pages: 423-426

    • NAID

      130004455849

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 放射線照射下におけるC60分子の欠陥導入過程2007

    • Author(s)
      坂口直史, 阿部弘亨, 片野吉男, 鬼塚貴志, 関村直人
    • Journal Title

      日本金属学会誌 71

      Pages: 218-222

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Analysis of Defects Formation and Mobility during Ion Irradiation by Coherent Precipitates2006

    • Author(s)
      Z. C. Li, H. Abe and N. Sekimura
    • Journal Title

      Materials Transactions 47

      Pages: 87-92

    • NAID

      10017282810

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Analysis of Defects Formation and Mobility during Ion Irradiation by Coherent Precipitates2006

    • Author(s)
      Z.C. Li, H. Abe and N. Sekimura
    • Journal Title

      Materials Transactions 47

      Pages: 259-262

    • NAID

      10017282810

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Preparation of C60 Ribbons by in situ Crystallization in a Microfluidic System2006

    • Author(s)
      K. Shinohara, T. Fukui, H. Abe, N. Sekimura and K. Okamoto
    • Journal Title

      Chemistry Letters 35

      Pages: 6477-6489

    • NAID

      130004424079

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Polymeric chains in C60 and Co mixture2006

    • Author(s)
      V. Lavrentiev, H. Abe, H. Naramoto, S. Sakai, K. Narumi
    • Journal Title

      Chemical Physics Letters 424

      Pages: 101-104

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Transmission electron microscopic investigations on diffusion of point defects and their clusters in a dilute Cu-Co alloy irradiated with Cu ions

    • Author(s)
      H. Abe, Z. Li, N. Sekimura and S.J. Zinkle
    • Journal Title

      Journal of Nuclear Materials (印刷中)(掲載決定)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] Transmission electron microscopic investigations on diffusion of point defects and their clusters in a dilute Cu-Co alloy irradiated with Cu ions2007

    • Author(s)
      H. Abe, Z. Li, N. Sekimura and S. J. Zinkle
    • Organizer
      13rd International Conference on Fusion Reactor Materials
    • Place of Presentation
      Nice, France
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Presentation] Internal probe to detect defects from cascades-In-situ ion irradiation experiments revisited2006

    • Author(s)
      S. Ishino, N. Sekimura, H. Abe
    • Organizer
      23rd ASTM Symposium on Effects of Radiation on Materials
    • Place of Presentation
      San Jose, USA
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Internal probe to detect defects from cascades - In-situ ion irradiation experiments revisited2006

    • Author(s)
      S. Ishino, N. Sekimura, H. Abe
    • Organizer
      23rd ASTM Symposium on Effects of Radiation on Materials
    • Place of Presentation
      San Jose, USA
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary

URL: 

Published: 2006-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi