超微細組織を有するSiC-AlNセラミックアロイの高温変形挙動 High-temperature Deformation Behavior of SiC-AlN Ceramic Alloys with Fine-grained Microstructure

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It was recently found that SiC-AIN solid solutions can be formed over a wide compositional range and better mechanical properties were obtained particularly at room temperature for the SiC-AIN alloys than the end number materials. The present study was intended to investigate the high-temperature strength and deformation behavior of the SiC-AIN solid solution. For this purpose, superfine grained SiC-AIN solid solution and its composite samples were prepared by a reaction HIP-sintering process, and their fracture strength and deformation behavior were evaluated up to 1773K by using a newly-developed Small Punch (SP) testing method. It has been found that high fracture strength is obtained up to 1473K, and below this temperature the load-deflection curve is linear, indicating typically brittle behavior. At 1773K, plastic-like deformation behavior was observed and it intensified with decreasing strain rate. The fractographic observation suggested that the grain boundary sliding enhanced by the ultrafine grained-microstructure was predominately responsible for the appearance of the non-linear deformation at high temperature.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 43(4), 421-425, 1996-04-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002011823
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    3954801
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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