Recycling of high grade die casting AM series magnesium scrap with the melt conditioned high pressure die casting (MC-HPDC) process
Recycling of high grade die casting AM series magnesium scrap with the melt conditioned high pressure die casting (MC-HPDC) process
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DOI：
10.1016/j.msea.2010.12.001
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发表时间：
2011-03
期刊：
影响因子：
6.4
通讯作者：
S. Tzamtzis;Huawei Zhang;M. Xia;N. H. Babu;Z. Fan
中科院分区：
文献类型：
--
作者：
S. Tzamtzis;Huawei Zhang;M. Xia;N. H. Babu;Z. Fan
严格的政府法规和环境问题是增加镁合金使用以减轻重量的驱动力。然而，这不可避免地导致镁合金废料增加，并要求有效的回收工艺。本文研究了液态调质高压压铸（MC-HPDC）工艺作为AM系列镁合金压铸废料回收的物理方法。需要优化工艺以消除热裂现象。实验结果表明，强烈的熔体剪切改变了存在于废料熔体中的MgO的尺寸和形态，导致有效的晶粒细化，这反映在回收合金的机械性能中。MC-HPDC工艺作为镁合金废料的物理回收方法显示出良好的潜力，生产的铸件具有与新鲜镁合金相当的性能。
Strict government regulations and environmental concerns are the driving forces behind the increased use of magnesium alloys aimed at weight reductions. This however inevitably leads to increased magnesium alloy scrap and calls for effective recycling processes. In this paper, the melt conditioned high pressure die casting (MC-HPDC) process has been investigated as a physical approach for the recycling of AM series magnesium alloy die casting scrap. Process optimization was required to eliminate hot cracking phenomena. The experimental results showed that intensive melt shearing alters the size and morphology of MgO present in the scrap melt, leading to an effective grain refinement that was reflected in the mechanical properties of the recycled alloy. The MC-HPDC process showed excellent potential as a physical recycling approach for Mg alloy scrap, producing casting with properties comparable to those of fresh Mg alloys.