Silicon Carbide Dispersion Strengthening of Magnesium Using Mechanical Alloying Method

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To improve the mechanical properties of magnesium alloys, hot pressing was performed to produce a silicon carbide-dispersion-strengthened magnesium (SiC<I><SUB>p</SUB></I>/Mg), in which SiC particles (SiC<I><SUB>p</SUB></I>) were milled with pure Mg using an attritor ball mill to reinforce the Mg. In this study, the silicon carbide dispersion strengthening of magnesium using the mechanical alloying (MA) method was investigated. The experimental results are summarized as follows. By increasing the milling energy of the ball mill in which the <I>p</I>Al<SUB>2</SUB>O<SUB>3</SUB>/Mg MA powder of a previous study was fabricated, the density of the SiC<I><SUB>p</SUB></I>/Mg was able to be increased to a value higher than that of the <I>p</I>Al<SUB>2</SUB>O<SUB>3</SUB>/Mg. The SiC<I><SUB>p</SUB></I>/Mg is about two-thirds as dense as commercial aluminum alloys. The hardness of the SiC<I><SUB>p</SUB></I>/Mg was about 1.5-fold that of the <I>p</I>Al<SUB>2</SUB>O<SUB>3</SUB>/Mg and exceeded that of AZ91D, which has the best mechanical properties of all the commercial Mg alloys. The highest value obtained was 95 HV. The bending strength of the SiC<I><SUB>p</SUB></I>/Mg was better than that of the <I>p</I>Al<SUB>2</SUB>O<SUB>3</SUB>/Mg. The results of XRD analysis and SEM-EDAX of the SiC<I><SUB>p</SUB></I>/Mg suggest that SiC<I><SUB>p</SUB></I> is almost uniformly and finely dispersed in the Mg and that the grain size of the matrix becomes finer with the dispersion.

収録刊行物

  • Materials transactions  

    Materials transactions 49(2), 304-309, 2008-02-01 

    The Japan Institute of Metals and Materials

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各種コード

  • NII論文ID(NAID)
    10021144198
  • NII書誌ID(NCID)
    AA1151294X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13459678
  • NDL 記事登録ID
    9354457
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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