衝撃固化成形したNb-Al系MA粉末の組織 Microstructure of Shock Consolidated Mechanically Alloyed Nb-Al Powders

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The intermetallic compound Nb<SUB>3</SUB>Al has attracted much attention as a potential high temperature material because of its high melting point. In the present study, we have made shock-consolidation experiments on Nb-20at. %Al alloy powders, which is produced by mechanical alloying of elemental powders, with the use of a single-stage propellant gun as a function of projectile velocity in the range of 0.75-1.49km/s. The density of compacts increases with increasing projectile velocty and saturates to a value of 7.25 Mg/m<SUP>3</SUP> when the velocity exceeds 1.16km/s. X-ray diffraction analysis indicates that the compound Nb<SUB>3</SUB>Al is formed for projectile velocities greater than 1.16km/s. Very fine microstructures with grain size of 10-200nm as well as high hardness values are observed on compacts consolidated with these projectile velocities.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 44(2), 194-197, 1997-02-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002013521
  • 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
    4139935
  • 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  NDL  J-STAGE 
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