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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Analyses of AM50-Ti-p metal-metal composite microstructure
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Analyses of AM50-Ti-p metal-metal composite microstructure

机译：AM50-Ti-P金属 - 金属复合微观结构分析

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摘要

The microstructure of magnesium matrix composites with titanium particles has been analysed. A composite based on AM50 commercial magnesium alloy with spherical Ti particles was fabricated by the stir casting method. For comparison, the commercial AM50 matrix alloy was cast in the same conditions. Analyses of the composite microstructure were carried out by light microscopy, XRD, scanning and transmission electron microscopy. The fabricated composite was characterized by uniformly distributed 30 wt% Ti particles. Analyses of the composite matrix structure revealed that the dendrite arm size (DAS) was reduced in the composite in relation to the matrix alloy, which indicated heterogeneous nucleation of the magnesium matrix alloy on the Ti particles. The microstructure of the composite was composed of alpha-Mg and alpha+gamma divorced eutectic. Additionally, the presence of the Al8Mn5 intermetallic compound was revealed at the interfaces between the magnesium alloy and Ti particles. The obtained results in connection with analyses of the matrix solidification process indicated that the Al8Mn5 phase also heterogeneously nucleated on the Ti particles. (C) 2017 Elsevier B.V. All rights reserved.
机译：分析了镁基复合材料与钛颗粒的微观结构。通过搅拌铸造方法制造基于AM50商业镁合金的基于AM50商业镁合金的复合材料。为了比较，在相同的条件下浇铸商业AM50基质合金。通过光学显微镜，XRD，扫描和透射电子显微镜进行复合微观结构的分析。通过均匀分布的30wt％Ti颗粒表征制造的复合材料。复合基质结构的分析表明，与基质合金相对于基质合金的复合材料中，在复合材料中降低了树突式臂尺寸（DAS），其指示在Ti颗粒上的镁基质合金的异质成核。复合材料的微观结构由α-Mg和α+γ离立共晶。另外，在镁合金和Ti颗粒之间的界面处揭示了Al8MN5金属间化合物的存在。与基质凝固方法的分析有关的得到结果表明，Al8MN5相也异质地在Ti颗粒上核。 （c）2017年Elsevier B.V.保留所有权利。

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