Al-5%Mg 合金中の極微量ナトリウムの起源およびその高温延性に及ぼす影響 Sources of a trace amoutn of sodium, and its effect on hot ductility of an Al-5 mass%Mg alloy

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This work was performed to clarify the sources of trace sodium which caused a high temperature embrittlement of an Al–5 mass%Mg alloy. Various kinds of Al–5 mass%Mg alloys were prepared by using different raw materials and crucibles. Then, sodium contents of the Al–Mg alloys were analyzed with GD–MS. It was proved that sodium was introduced from the 99.97% purity magnesium. Further, it turned out that sodium was also brought from the 99% purity alumina crucible. Hot ductility of these alloys increased with decrease in the sodium content. From sets of experiments, it is clarified that the high temperature embrittlement of an coarse-grained Al–5 mass%Mg alloy disappears when the sodium content is decreased to 0.01 ppm.

収録刊行物

  • 軽金属  

    軽金属 48(8), 371-374, 1998-08 

    The Japan Institute of Light Metals

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各種コード

  • NII論文ID(NAID)
    10002665033
  • 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
    4651659
  • 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  CJP引用  NDL  J-STAGE 
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