反応焼結による新しいAl-Ti-N系合金の作製(第5報) -Cu添加によるL1_2構造のAl_3Ti相の生成- A New Ternary Al-Ti-N Alloy Prepared by Reaction Sintering(V)-Formation of L1_2-Al_3Ti Phase by the Addition of Cu

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The mechanism of the crystal structure transformation of Al<SUB>3</SUB>Ti from DO<SUB>22</SUB> to a high symmetry Ll<SUB>2</SUB> by the addition of Cu was investigated using the DV-X α molecular orbital calculation. The calculation suggested that Ti atoms were able to locate at the 2nd neighbor sites of Ti atoms by substitution of Cu atoms for a part of Al atoms, namely, the 1st neighbor sites of Ti atoms. This atomic configuration is the mechanism for the stabilization of the Ll<SUB>2</SUB> crystal structure of Al<SUB>3</SUB>Ti by the addition of Cu. Therefore, Cu was added to improve the ductility of a new reaction sintered Al-Ti-N alloy which consists of Al<SUB>3</SUB>Ti and AlN phases. The added Cu transformed the crystal structure of Al<SUB>3</SUB>Ti from DO<SUB>22</SUB> to a high symmetry Ll<SUB>2</SUB>, and as a result, decreased the hardness of the alloy.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 43(4), 533-539, 1996-04-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002012019
  • 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
    3954821
  • 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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