NiAl/TiC複合材料の燃焼合成に及ぼすFe添加の影響 Effects of Iron on Combustion Synthesis of NiAl/TiC Composites

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In order to enhance the negligible low-temperature ductility and low high-temperature strength of nickel aluminides, NiAl/TiC composites were fabricated by the combustion reaction process from elemental powders. In this study, the effects of Fe on the combustion reaction of Ni-Al-Ti-C system were studied and mechanical properties of NiAl/TiC composites prepared by the combustion reaction process, following arc-melting were also estimated. The matrix compositions of the alloys included Ni<SUB>50</SUB>Fe<SUB>10</SUB>Al<SUB>40</SUB>, Ni<SUB>50</SUB>Fe<SUB>20</SUB>Al<SUB>30</SUB> and Ni<SUB>25</SUB>Fe<SUB>50</SUB>Al<SUB>25</SUB>, with TiC of 0-50 at%, respectively.<BR>The addition of Fe significantly reduced the heat of formation during the combustion reaction in Ni-Al-Ti-C system. Resulting compacts consisted of small TiC particles of about 0.5μm and the matrix NiAl. In the arc-melted and annealed specimens, TEM observation revealed that γ-Ni phase appeared on the grain boundaries in Ni<SUB>50</SUB>Fe<SUB>10</SUB>Al<SUB>40</SUB> alloys, and α -Fe phase precipitated in the matrix in Ni<SUB>25</SUB>Fe<SUB>50</SUB>Al<SUB>25</SUB> alloys. For Ni<SUB>50</SUB>Fe<SUB>10</SUB>Al<SUB>40</SUB> alloys, ductility in bending increased because of the γ-Ni phase. The other hand, for Ni<SUB>25</SUB>Fe<SUB>50</SUB>Al<SUB>25</SUB> alloys, compressive strength pronouncedly increased at ambient and elevated temperatures, caused to the presence of α-Fe phase and TiC particles in the matrix.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 43(3), 283-288, 1996-03-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002011509
  • 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
    3936691
  • 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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