焼結鉄の弾性率およびポアソン比におよぼす気孔特性の影響 Effects of pore characteristics on elastic modulus and Poisson's ratio of sintered irons

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Relationships between Young's modulus, shear modulus, Poisson's ratio and porosity of sintered irons have been studied by an acoustic pulse method at varying of pore shapes, sizes and distributions. The pore shapes, sizes and distributions were changed by using reduced iron powder, atomized iron powder, sieved atomized iron powder, and mixed powder of carbonyl iron powder and atomized iron powder, or by the process of re-compacting and resintering.<BR>In all case, the Young's modulus, the shear modulus and the Poisson's ratio decreased with increasing of porosity. At the same porosity, spherical and fine pores increased the Young's modulus and the shear modulus, decreased the Poisson's ratio by comparison with irregular and coarse pores. The Young's modulus, the shear modulus and the Poisson's ratio increased as pore surface becoming smooth.<BR>In case that pore shapes are similar and pore sizes are different, the Young's modulus and the shear modulus having fine pores are higher than that having coarse pores. Although pore shapes, sizes or distributions of sintered irons were different, at the same sintering conditions the Poisson's ratios were nearly equal at the same porosity (<0.2).

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 45(10), 920-925, 1998-10-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002052937
  • 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
    4585454
  • 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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