カルシウム添加によるMg-Zn合金のクリープ特性の向上 Greep properties of Mg-Zn alloy improved by calcium addition

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In the development of magnesium alloys for high pressure die casting which have excellent high temperature strength, creep properties have been investigated with focusing on calcium addition. Creep tests were performed in the temperature range of 373–473 K and the stress range of 40–100 MPa. The creep resistance of the Mg–Zn alloy at temperature below 440 K is extremely improved with calcium addition. As the concentration of zinc increased, the creep properties tend to deteriorate. In other words, if the alloy contains less than 4 mass%Zn and more than 0.5 mass%Ca, good creep properties is shown below 440 K in the alloy systems. The fine plate precipitates consisting of several atom layers are found in the crept samples which show good creep properties. On the other hand, the coarse precipitates are observed in the samples after creep in alloys without calcium and with calcium crept above 440 K. Improvement of the creep properties by calcium addition is considered to be caused by the precipitation of fine compounds.

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  • 軽金属  

    軽金属 49(7), 272-276, 1999-07-30 

    The Japan Institute of Light Metals

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各種コード

  • NII論文ID(NAID)
    10002666564
  • 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
    4807858
  • 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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