Changes in Properties of Ingot Recycled from Die-cast Components made of AZ91D Magnesium Alloy with Paint Finishing by Manganese Addition.

DOI Web Site 3 Citations 12 References
  • INOUE Makoto
    Department of Ecomaterials Engineering, Toyama National College of Technology, Hongo–machi, Toyama 939–8630
  • IWAI Masao
    Department of Ecomaterials Engineering, Toyama National College of Technology, Hongo–machi, Toyama 939–8630
  • KAMADO Shigeharu
    Department of Mechanical Engineering, Nagaoka University of Technology
  • KOJIMA Yo
    Department of Mechanical Engineering, Nagaoka University of Technology
  • ITOH Tadao
    Tenma Mag–tec. Co., Ltd.
  • SUGAMA Mitsuo
    Sony Corporation

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Other Title
  • マンガン添加によるＡＺ９１Ｄマグネシウム合金製ダイカスト塗装部品からのリサイクル材の性状変化
  • マンガン テンカ ニ ヨル AZ91D マグネシウム ゴウキンセイ ダイカスト トソウ ブヒン カラ ノ リサイクルザイ ノ セイジョウ ヘンカ

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Abstract

A newly recycling process for video camera components of AZ 91 D magnesium alloy used for professional market was developed by melting and casting processes in order to satisfy the JIS specifications for recycled AZ 91 D magnesium alloy ingot. Various quantities of Mn were added to the melt in order to avoid contamination by impurities such as Fe, Ni and Cr from paints. Composition analysis and mechanical properties and corrosion resistance of the recycled ingots were also examined. Recovery ratio of the recycled ingots is in the range of 60 % to 75 %. Chemical composition and tensile properties of the recycled ingot with Mn addition of more than 0.23 % is satisfied by JIS specification except for Cu content. Tensile strength and 0.2 % proof stress of the recycled ingots increase with increasing Mn content. The recycled specimens with Mn addition of more than 0.23 % almost exhibit the same level of corrosion resistance as the virgin ingot of AZ 91 D magnesium alloy.

Journal

  • Shigen-to-Sozai

    Shigen-to-Sozai 115 (3), 189-194, 1999

    The Mining and Materials Processing Institute of Japan

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