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Interface formation between liquid and solid Mg alloys-An approach to continuously metallurgic joining of magnesium parts

机译：液态和固态镁合金之间的界面形成-镁零件连续冶金连接的一种方法

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摘要

In this project we describe a process where a magnesium melt (pure Mg or AJ62) is cast onto a solid magnesium substrate (AZ31). The natural oxide/hydroxide layer on magnesium alloys usually prevents metallurgical joining via casting. Therefore, a pre-treatment was applied to the AZ31 substrate to replace the oxide layer with a Zn/MgZn_2 coating. This procedure comprises a combined pickling/redox-reaction and galvanization/heat-treatment procedure, which drastically changes the substrate's surface wetting properties. We depict the process parameters that allow for the formation of a continuous metallurgic joint, which is free of oxides, micro-cavities or other imperfections, and discuss the interface formation from a metal-physical view. In such a way the surface modification creates the preconditions that are necessary to join wrought and cast magnesium components by means of compound casting.
机译：在本项目中，我们描述了将镁熔体（纯Mg或AJ62）浇铸到固态镁基底（AZ31）上的过程。镁合金上的天然氧化物/氢氧化物层通常会阻止通过铸造进行冶金连接。因此，对AZ31基板进行了预处理，以用Zn / MgZn_2涂层代替氧化物层。该过程包括酸洗/氧化还原反应和镀锌/热处理的组合过程，这将大大改变基材的表面润湿性。我们描述了允许形成连续的冶金接头的工艺参数，该接头不含氧化物，微腔或其他缺陷，并从金属物理的角度讨论了界面的形成。以这种方式，表面改性产生了通过复合铸造来接合锻造和铸造镁部件所必需的前提条件。

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  • 来源
    《Materials Science and Engineering》 |2010年第9期|2274-2279|共6页
  • 作者

    K.J.M. Papis; J.F. Loeffler; P.J. Uggowitzer;

  • 作者单位

    Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland;

    Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland;

    Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    magnesium alloys; composites; bonding; interfaces;

    机译：镁合金复合材料粘接介面;

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