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Microstructure, Mechanical Properties and Die-Filling Behavior of High-Performance Die-Cast Al–Mg–Si–Mn Alloy

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Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

This work aims to reveal the relationships between the microstructure, mechanical properties and flow behavior of die-casting AlMg5Si2Mn alloy. Results indicated that the microstructure of the die-cast AlMg5Si2Mn consists of α1–Al grains, fine-size α2–Al grains and (Al + Mg2Si) eutectic. The surface layer observed has the thickness in a range of 120–135 μm, while an ellipse-like surface layer edge is observed in the corner of the plate-like sample. Tensile strength and elongation (δ) of the specimens are slightly decreased along the die-filling direction due to the backflow of melt. Pure (Al + Mg2Si) eutectic layer and ultra-fine-size α2–Al grains observed are around the overflow channels. Mass feeding is predominantly responsible for the superior mechanical properties of the round bars as compared to those of plate-like samples.

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Acknowledgments

This work was financially supported by Guangdong Provincial Department of Science and Technology, China (No. 2012A090300016). Authors would like to express thanks to Material Institution of CAEP (China Academy of Engineering Physics). The authors would also like to express their appreciation to the Analytical and Testing Center, Huazhong University of Science and Technology.

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Authors and Affiliations

  1. Institute of Materials, China Academy of Engineering Physics, Mianyang, 621900, China

    Zu-Qi Hu & Xin-Jian Zhang

  2. State Key Lab of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, China

    Shu-Sen Wu

Authors
  1. Zu-Qi Hu
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  2. Xin-Jian Zhang
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  3. Shu-Sen Wu
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Correspondence to Xin-Jian Zhang.

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Available online at http://link.springer.com/journal/40195

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Hu, ZQ., Zhang, XJ. & Wu, SS. Microstructure, Mechanical Properties and Die-Filling Behavior of High-Performance Die-Cast Al–Mg–Si–Mn Alloy. Acta Metall. Sin. (Engl. Lett.) 28, 1344–1353 (2015). https://doi.org/10.1007/s40195-015-0332-7

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  • DOI: https://doi.org/10.1007/s40195-015-0332-7

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