Measurement of Kinetic Energy of Flying Fragments in Bending Test of WC-10mass%Co Cemented Carbide (特集 硬質材料) Measurement of Kinetic Energy of Flying Fragments in Bending Test of WC-10 mass%Co Cemented Carbide

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The kinetic energy (E<SUB>k</SUB>) of flying fragments in three-point bending test of WC-10mass%Co cemented carbide was experimentally evaluated by our devised convenient method for a test piece with size of 4×3×36mm<SUP>3</SUP> and a span of 30mm, and the ratio of E<SUB>k</SUB> to the elastic strain energy (E<SUB> ?? </SUB>)which was stored in the test piece just before the fracture was calculated. It was found that E<SUB>k</SUB> increased from 0.016J to 0.046J and the ratio of E<SUB>k</SUB>/E<SUB> ?? </SUB> increased from 0.09 to 0.15 with increasing flexural strength (σ<SUB>m</SUB>). It was suggested that the error due to E<SUB>k</SUB> in the relative value of fracture toughness (K<SUB>Ic</SUB>) estimated by using the equation of σ<SUB>m</SUB>= ?? K<SUB>Ic</SUB>S<SUB>mf</SUB><SUP>1/2</SUP> ( ?? is a factor including the shape of fracture source, the roughness of fracture surface and the correction parameter, etc., and S<SUB>mf</SUB> is the total macroscopic area of fracture surfaces of fragments of one test piece), in the derivation of which E<SUB>k</SUB> is neglected, was +6.5%, if the effect of the other factors on the relative value of K<SUB>Ic</SUB> are small.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 44(3), 257-262, 1997-03-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002013662
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    4172710
  • 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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