MA-HIP法により製造した(NiAl+Ni_3Al)2相金属間化合物の組織と機械的性質 Microstructures and Mechanical Properties of (NiAl+Ni_3Al)Two-Phase Intermetallic Compounds Produced by MA-HIP Process

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The (Ni<SUB>3</SUB>AI+NiAl) intermetallic compounds were produced by MA-HIP method. There are two cases for the sintered specimens; the one was produced using only elemental powders (EP specimen) and the other was produced using both NiAl prealloyed and nickel powders (PP specimen). Those alloys were subjected to the heat refining process. The microstructural change and mechanical properties were investigated. It was found that the fine particles with the size of less than 3μm were obtained by MA process. EP specimen showed very fine microstructures with almost full density. On the other hand, PP specimens showed higher relative density with increasing HIP temperature. After heat-refining treatment, EP specimen had fine structure, since the size of the prior P grains and the width of lamella decreased comparing with PP specimens. There was the tendency for the mechanical properties of PP specimens to approach those of EP specimen with increasing HIP temperature. The strain rate sensitivity exponent, m value, was found to be about 0.52 for EP specimen and 0.34 for PP specimen at 1073K. This high m value suggests the occurrence of superplastic deformation especially in EP specimen.

収録刊行物

  • 粉体および粉末冶金

    粉体および粉末冶金 43(11), 1361-1367, 1996-11-15

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002261058
  • 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
    4077942
  • 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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