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Structure and mechanical behavior ofin situdeveloped Mg2Si phase in magnesium and aluminum alloys - a review

机译：原位的结构和力学行为在镁和铝合金中发育Mg2SI相位 - 评论

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摘要

The demand for lightweight, high specific strength alloys has drastically increased in the last two decades. Magnesium and aluminum alloys are very suitable candidate materials. Research on alloys with an Mg2Si phase started about three decades ago. The current scenario is that magnesium and aluminum alloys containing an Mg2Si phase are very popular in the scientific community and extensively used in the automotive and aerospace industries. Mg2Si is a very stable phase and exhibits excellent mechanical, thermal, electrochemical and tribological properties. This paper presents a brief review of Mg-Si binary alloys, and Mg-Si-Al and Al-Si-Mg alloys. Grain refinement methods and mechanical properties have been reported on lightweight alloys containing Mg and Si. The available results show that silicon reacts with magnesium and forms an intermetallic compound with the stoichiometric formula Mg2Si. There isin situformation of an Mg2Si phase in Mg-Si, Mg-Si-Al and Al-Mg-Si alloys by the diffusion or precipitation process. The morphology and size of anin situdeveloped Mg2Si phase depend on the synthesis route and base metal or matrix. In the liquid metallurgy process the precipitation sequence depends on the cooling rate. The morphology of the Mg2Si phase depends on the precipitation sequence and the mechanical properties depend on the morphology and size of the Mg2Si phase within the alloy matrix.
机译：在过去的二十年中，对轻质的需求大幅增加，在过去的二十年里大幅增加。镁和铝合金是非常合适的候选材料。大约三十年前始达MG2SI阶段的合金研究。目前的情景是含有Mg2SI相的镁和铝合金在科学界中非常受欢迎，并广泛用于汽车和航空航天行业。 MG2SI是一个非常稳定的相位，并且具有优异的机械，热，电化学和摩擦学性能。本文介绍了对Mg-Si二元合金和Mg-Si-Al和Al-Si-Mg合金的简要述评。在含有Mg和Si的轻质合金上报道了晶粒细化方法和机械性能。可用的结果表明，硅与镁反应，形成与化学计量式Mg2SI的金属间化合物。通过扩散或沉淀过程中存在Mg-Si，Mg-Si-Al和Al-Mg-Si合金Mg2Si相的情况。 Anin Situdeveloped Mg2Si相的形态和大小取决于合成途径和基础金属或基质。在液体冶金过程中，沉淀序列取决于冷却速率。 Mg2Si相的形态取决于沉淀序列，力学性能取决于合金基质内Mg2Si相的形态和尺寸。

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  • 来源
    《RSC Advances》 |2020年第61期|共19页
  • 作者

    Seth Prem Prakash; Parkash Om; Kumar Devendra;

  • 作者单位

    Indian Inst Technol BHU Dept Ceram Engn Varanasi 221005 Uttar Pradesh India;

    Indian Inst Technol BHU Dept Ceram Engn Varanasi 221005 Uttar Pradesh India;

    Indian Inst Technol BHU Dept Ceram Engn Varanasi 221005 Uttar Pradesh India;

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  • 正文语种 eng
  • 中图分类 化学;
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