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Effect of particle size distribution on the microstructure, texture, and mechanical properties of Al–Mg–Si–Cu alloy

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Abstract

The effect of particle size distribution on the microstructure, texture, and mechanical properties of Al–Mg–Si–Cu alloy was investigated on the basis of the mechanical properties, microstructure, and texture of the alloy. The results show that the particle size distribution influences the microstructure and the final mechanical properties but only slightly influences the recrystallization texture. After the pre-aging treatment and natural aging treatment (T4P treatment), in contrast to the sheet with a uniform particle size distribution, the sheet with a bimodal particle size distribution of large constituent particles and small dispersoids exhibits higher strength and a somewhat lower plastic strain ratio (r) and strain hardening exponent (n). After solution treatment, the sheet with a bimodal particle size distribution of large constituent particles and small dispersoids possesses a finer and slightly elongated grain structure compared with the sheet with a uniform particle size distribution. Additionally, they possess almost identical weak recrystallization textures, and their textures are dominated by CubeND {001}<310> and P {011}<122> orientations.

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Acknowledgements

This work was financially supported by the National Key Research and Development Program of China (No. 2016YFB0300801), the National Natural Science Foundation of China (No. 51571023), Zhejiang Provincial Natural Science Foundation of China (No. LQ17E010001), the Beijing Municipal Natural Science Foundation (No. 2172038), and the Beijing Laboratory of Metallic Materials and Processing for Modern Transportation (No. FRF-SD-B-005B). This work was also sponsored by the K. C. Wong Magna Fund in Ningbo University.

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Authors and Affiliations

  1. The Faculty of Mechanical Engineering and Mechanics, Ningbo University, Ningbo, 315211, China

    Xiao-feng Wang & Jian-bin Chen

  2. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, China

    Ming-xing Guo, Ji-shan Zhang & Lin-zhong Zhuang

  3. Capital Aerospace Machinery Company, Beijing, 100076, China

    Cun-qiang Ma

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  1. Xiao-feng Wang
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Correspondence to Xiao-feng Wang.

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Wang, Xf., Guo, Mx., Ma, Cq. et al. Effect of particle size distribution on the microstructure, texture, and mechanical properties of Al–Mg–Si–Cu alloy. Int J Miner Metall Mater 25, 957–966 (2018). https://doi.org/10.1007/s12613-018-1645-0

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  • DOI: https://doi.org/10.1007/s12613-018-1645-0

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