反応合成TiB_2粒子分散合金によるアルミニウムの凝固結晶粒微細化 Grain refining of the aluminum alloy by reaction syntyhesized TiB_2-despersed alloys

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著者

    • 小橋 真 KOBASHI Makoto
    • 名古屋大学工学部材料プロセス工学科 Department of Materials Processing Engineering, School of Engineering, Nagoya University
    • 長 隆郎 CHOH Takao
    • 名古屋大学工学部材料プロセス工学科 Department of Materials Processing Engineering, School of Engineering, Nagoya University

抄録

Grain refining effects of TiB<sub>2</sub> dispersed alloys on aluminum were investigated. The TiB<sub>2</sub> dispersed alloys were synthesized by the reaction between titanium and AlB<sub>2</sub>, and were added to molten aluminum at 1273 K as the grain refining agents. Excess amount of titanium or aluminum was added to starting materials of the reaction for the purpose of controlling the adiabatic temperatures. In this paper, (1) distribution of TiB<sub>2</sub> particles in molten aluminum, (2) effects of TiB<sub>2</sub> distribution on the grain size and (3) mechanical properties of grain-refined aluminum are mainly dealt with. Since aluminum oxide forms at the inter-particle regions of TiB<sub>2</sub>, the dispersion of TiB<sub>2</sub> particles in molten aluminum is not homogeneous when aluminum was added in the starting materials. The excess titanium addition as a diluent, however, improves the distribution of TiB<sub>2</sub> particles. The average grain size of aluminum alloy is effectively reduced by adding the TiB<sub>2</sub> dispersed alloy. The grain refining effects are saturated by about 0.4 vol% addition of TiB<sub>2</sub> particles. The 0.2% proof stress of Al–2 mass%Mg alloy is improved by the grain refining.

収録刊行物

  • 軽金属

    軽金属 46(10), 473-478, 1996-10-30

    The Japan Institute of Light Metals

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各種コード

  • NII論文ID(NAID)
    10003794555
  • NII書誌ID(NCID)
    AN00069773
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    04515994
  • NDL 記事登録ID
    4068281
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-284
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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