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Processing, Microstructure, and Mechanical Properties of Large Spray-Deposited Hypoeutectic Al-Si Alloy Tubular Preform

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Abstract

In this study, a large-scale hypoeutectic Al-Si alloy tubular preform was synthesized by spray-deposition technique and then subjected to a densification processing, wedge pressing (WP). Microstructure and mechanical properties of the as-sprayed and as-secondary processed tube were investigated. The experimental results show that the spray-deposited preform is a coalesced bulk consisting of atomized particles, porosity, and matrix alloy with modified microstructure. The mechanical properties of the porous spray deposits can be substantially improved after WP and subsequent heat treatment due to effective densification and improvements of microstructure.

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Acknowledgments

This work was financially supported by the Natural Science Foundation of China (Grant No. 50974058), and the authors thank G. Chen, D. F. Fu, T. Zhou, T. Cao, and G.Q. Zhou for their help in the preparation of the preform.

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Authors and Affiliations

  1. College of Electromechanical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China

    Zhigang Chen & Guoning Tang

  2. College of Materials Science and Engineering, Hunan University, Changsha, 410082, China

    Zhigang Chen & Zhenhua Chen

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  1. Zhigang Chen
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  2. Zhenhua Chen
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  3. Guoning Tang
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Correspondence to Zhigang Chen.

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Chen, Z., Chen, Z. & Tang, G. Processing, Microstructure, and Mechanical Properties of Large Spray-Deposited Hypoeutectic Al-Si Alloy Tubular Preform. J. of Materi Eng and Perform 20, 238–243 (2011). https://doi.org/10.1007/s11665-010-9679-0

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  • DOI: https://doi.org/10.1007/s11665-010-9679-0

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