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Study of dynamical behavior of point defect clusters in neutron-irradiated metals at elevated temperature by electron microscopy

Research Project

Project/Area Number 11650683
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Physical properties of metals
Research InstitutionHiroshima University

Principal Investigator

MUKOUDA Ichiro  Faculty of Engineering, Hiroshima University, Research Associate, 工学部, 助手 (70209980)

Co-Investigator(Kenkyū-buntansha) SHIMOMURA Yoshiharu  Faculty of Engineering, Hiroshima University, Professor, 工学部, 教授 (40033831)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 2000: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1999: ¥1,800,000 (Direct Cost: ¥1,800,000)
KeywordsRadiation Damage / Void / Point defect clusters / Dislocation structure / Transmission electron microscopy / in-situ observation
Research Abstract

We reported previously an experimental result which shows that voids can move in neutron-irradiated copper at elevated temperature. To study the detailed behavior of voids, we carried out annealing experiments and in-situ observations in neutron-irradiated copper. Neutron irradiation was carried out in the temperature controlled capsule at KUR.(Kyoto University Reactor). Neutron irradiation was performed at 300℃ to damage levels between 10^<-4> to 10^<-3> dpa. The annealing temperature was 250℃ for 10, 20, 30 min sequentially for neutron- irradiated copper. After annealing TEM observation was carried out at room temperature. Experimental results show that voids moved along the [110] direction. Voids moved during 250℃ annealing but small stacking fault tetrahedra (SFT) were not changed. We observed 37 voids and 8 voids moved, the others vanished during annealing. The images of in-situ observation, void contrast images were recorded on VTR tape and analyzed frame by frame. At room temperature observation voids were static and were seen as white circles ; however at 300℃ the contrast changed to an oval shape and sometimes disappeared. After 7 sec contrast was a white circle and moved slightly and similar phenomena were observed quite frequently at 300℃. It is concluded that void moved with dynamical structural relaxation at elevated temperature.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (33 results)

All Other

All Publications (33 results)

  • [Publications] Y.Shimomura: "Development of vacancy clusters in neutron-irradiated copper at high temperature"J.Nucl.Mater.. 283-287. 249-254 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] I.Mukouda,: "Microstructure in pure copper irradiated by simultaneous multi-ion beam of hydrogen, helium and self ions"J.Nucl.Mater.. 283-287. 302-305 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] I.Mukouda: "Annihilation of Interstitial Atoms to Dislocations in Neutron-irradiated Cu and Ni at High Temperature"Materials Science & Engineering : A. (in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Shimomura: "Atomistic Mechanism of Nucleation and Growth of Voids in Cu studied by Computer Simulation :"Mat.Res.Soc.Symp.Proc.. (in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] I.Mukouda: "Dynamical Behavior of Voids in Neutron-irradiated Copper at Elevated Temperature"Mat.Res.Soc.Symp.Proc.. (in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Shimomura,: "Point Defects Observed in D-T neutron irradiated Copper, Silver and Gold at 288K with a Rotating Target in FNS JAERI"Mat.Res.Soc.Sump.Proc.. (in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] I.Mukouda: "Damage Evolution in Neutron-irradiated Cu during Neutron Irradiation"J.Nucl.Mater.. 271&272. 230-235 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Shimomura: "Computer simulation on the void formation in neutron-irradiated Cu and Ni at high temperature"J.Nucl.Mater.. 271&272. 225-229 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Shimomura: "Atomistic processes of damage evolution in neutron-irradiated Cu and Ni at high temperature"Radiation Effects and Defect in Solids. 148. 127-159 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] I.Mukouda: "Formation of voids in pure copper and Fe-Cr-Ni alloys irradiated by simultaneous : multi-ion beam of hydrogen, helium and Ni ions"Mat.Res.Soc.Symp.Proc.. 540. 549-554 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Shimomura: "Void formation in neutron- and ion-irradiated copper and nickel"Mat.Res.Soc.Symp.Proc.. 540. 527-532 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Shimomura: "Development of vacancy clusters in neutron-irradiated copper at high temperature"J.Nucl.Mater.. 283-287. 249-254 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] I.Mukouda: "Microstructure in pure copper irradiated by simultaneous multi-ion beam of hydrogen, helium and selfions"J.Nucl.Mater.. 283-287. 302-305 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] I.Mukouda: "Annihilation of Interstitial Atoms to Dislocations in Neutron-irradiated Cu and Ni at High Temperature"Materials Science & Engineering A. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Shimomura: "Atomistic Mechanism of Nucleation and Growth of Voids in Cu studied by Computer Simulation"Mat.Res.Soc.Symp.Proc.. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] I.Mukouda: "Dynamical Behavior of Voids in Neutron-irradiated Copper"Mat.Res.Soc.Symp.Proc.. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Shimomura: "Point Defects Observed in D-T neutron irradiated Copper, Silver and Gold at 288 with a Rotating Target in FNS JAERI"Mat.Res.Soc.Symp.Proc.. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] I.Mukouda: "Damage Evolution in Neutron-irradiated Cu during Neutron Irradiation"J.Nucl.Mater.. 271 & 272. 230-235 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Shimomura: "Computer simulation on the void formation in neutron-irradiated Cu and Ni at high temperature"J.Nucl.Mater.. 271 & 272. 225-229 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Shimomura: "Atomistic processes of damage evolution in neutron-irradiated Cu and Ni at high temperature"Radiat.Eff.Def.in Solids.. 148. 127-159 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] I.Mukouda: "Formation of voids in pure copper and Fe-Cr-Ni alloys irradiated by simultaneous multi-ion beam of hydrogen, helium and Ni ions"Mat.Res.Soc.Symp.Proc.. 540. 549-554 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Shimomura: "Void formation in neutron- and ion-irradiated copper and nickel"Mat.Res.Soc.Symp.Proc.. 540. 527-532 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Shimomura : "Development of vacancy clusters in neutron-irradiated copper at high temperature"J.Nucl.Mater.. 283-287. 249-254 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] I.Mukouda: "Microstructure in pure copper irradiated by simultaneous multi-ion beam of hydrogen,helium and self ions"J.Nucl.Mater.. 283-287. 302-305 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] I.Mukouda : "Annihilation of Interstitial Atoms to Dislocations in Neutron-irradiated Cu and Ni at High Temperature"Materials Science & Engineering : A. (in press). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Shimomura : "Atomistic Mechanism of Nucleation and Growth of Voids in Cu studied by Computer Simulation :"Mat.Res.Soc.Symp.Proc.. (in press). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] I.Mukouda : "Dynamical Behavior of Voids in Neutron-irradiated Copper at Elevated Temperature "Mat.Res.Soc.Symp.Proc.. (in press). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Shimomura: "Point Defects Observed in D-T neutron irradiated Copper, Silver and Gold at 288K with a Rotating Target in FNS JAERI"Mat.Res.Soc.Symp.Proc.. (in press). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] I.Mukouda: "Damage Evolution in Neutron-irradiated Cu during Neutron Irradiation"J.Mucl.Mater.. 271&272. 230-235 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Y.Shimomura: "Computer simulation on the void formation in neutron-irradiated Cu and Ni at high temperature"J.Mucl.Mater.. 271&272. 225-229 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Y.Shimomura: "Atomistic processes of damage evolution in neutron-irradiated Cu and Ni at high temperature"Radiation Effects and Defect in Solids. 148. 127-159 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] I.Mukouda: "Formation of voids in pure copper and Fe-Cr-Ni alloys irradiated by simultaneous multi-ion beam of hydrogen helium and Ni ions"Mat.Res.Soc.Symp.Proc.. 540. 549-554 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Y.Shimomura: "Void formation in neutron- and ion-irradiated copper and nickel"Mat.Res.Soc.Symp.Proc.. 540. 527-532 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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