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1992 Fiscal Year Final Research Report Summary

DEVELOPMENT OF LOW ACTIVATION FIBER REINFORCED METAL MATRIX COMPOSITES

Research Project

Project/Area Number 03452297
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Nuclear engineering
Research InstitutionUNIVERSITY OF TOKYO

Principal Investigator

KOHYAMA Akira  Department of Materials Science, University of Tokyo, Associate Professor, 工学部, 助教授 (80092203)

Co-Investigator(Kenkyū-buntansha) KOHNO Yutaka  Department of Materials Science, University of Tokyo, Research Associate, 工学部, 助手 (70150282)
SATO Shinji  Department of Materials Science, University of Tokyo, Research Associate, 工学部, 助手 (70090511)
Project Period (FY) 1991 – 1992
KeywordsMetal Matrix Composite / Fiber reinforcement / SiC fiber / Carbon fiber / Tensile test / Microstructure / Charpy test / Aluminum / Neutron irradiation
Research Abstract

As low activation structural materials for nuclear fission reactors and thermonuclear fusion reactors, aluminum matrix composite materials reinforced with SiC and C fibers were developed. In this study, high performance composite wires were produced and they were hot pressed into unidirectionally continuous fiber reinforced Al matrix composites. The effects of neutron irradiation were studied using neutron irradiated materials, mixed spectrum neutron irradiated in Japan Materials Testing Reactor (JMTR) at JAERI-Oarai establishment and fast neutron irradiation in JOYO at PNC-Oarai. Neutron fluence dependence of tensile properties of the composites were provided together with those of reinforcing fibers. There is a irradiation induced hardening and improvement of Young's modulus upto threshold fluence about 10^<21>n/cm^2 and there is a turn over to be degraded mechanical properties at higher fluence than the threshold fluence. Also, the effects of test temperature and neutron irradiation on fracture toughness of the composites were studied. The Charpy value was increased with increasing test temperature and with neutron irradiation. SiC/Al was rather more neutron fluence insensitive than C/Al which was correlated to the difference of interfacial structure between the two systems. From those results, the limiting factors in utilization of the composite materials to fission and fusion reactors were proposed and some issues to be solved were addressed.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 浜田 賢一,佐東 信司,香山 晃: "繊維強化型複合材料の弾性率と内部摩擦" 東京大学工学部総合試験所年報. 50. 125-129 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Sato,K.Hamada and A.Kohyama: "Effect of Neutron Irradiation on Fracture Toughness of Metal Matrix Composites" Journal of Nuclear Materials. 191〜194. 616-620 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 香山 晃,佐東 信司,坂 健司: "超音波顕微鏡によるAl基複合材料の変形-破壊過程の直接観察" 軽金属. 42. 418-426 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Kohyama,S.Sato and K.Hamada: "Effect of Neutron Irradiation on Ceramix Fiber-Reinforced Comosites" American Society for Testing and Materials ASTM-STP1125. STP1125. 785-796 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Koyhama,N.Niwa and S.Sato: "In-situ Observation of Deformation and Fracture Process for Metal Mmatrix Composites under SEM and SAM" Key Engineering Materials. 79-80. 279-294 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Kohyama,K.Hamada and S.Sato: "Effect of Neutron Irradiation Impact Properties of Metal Matrix Composites" Key Engineering Materials. 79-80. 315-326 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Hamada, S.Sato and A.Kohyama: "Elastic properties and internal friction of fiber reinforced composites" Annual Report of Eng., Res. Inst., Fac. of Eng., Univ. of Tokyo. 50. 125-129 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Sato, K.Hamada and A.Kohyama: "Effect of neutron irradiation on fracture toughness of metal matrix composites" J. of Nucl. Mater.191-194. 616-620 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Kohyama, K.Saka and S.Sato: "In-situ observation of deformation and fracture process of aluminum matrix composite materials by means of acoustic scanning microscopy" Keikinzoku. 42. 418-426 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Kohyama, S.Sato and K.Hamada: "Effect of neutron irradiation on ceramics fiber reinforced composites" "Effects of Radiation on Materials", ASTM. STP-1125. 785-796 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Kohyama, N.Niwa and S.Sato: "In-situ observation of deformation and fracture process of metal matrix composites under SEM and SAM" Key Engineering Materials. 79-80. 279-294 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Kohyama, K.Hamada and S.Sato: "Effect of neutron irradiation on impact properties of metal matrix composites" Key Engineering Materials. 79-80. 315-326 (1993)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1994-03-24  

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