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Microstructures and properties of 6016 aluminum alloy with gradient composition

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Abstract

Weight reduction plays an important role in reducing fuel and emissions, and the heat-treatable 6016 aluminum alloy exhibits excellent application prospect in automobile lightweight. In this paper, ingot with constant Mg/Si ratio and decreased Mg and Si contents was obtained. Both the microstructure and the texture of 6016 aluminum alloy plate designed with different alloy compositions at the top/bottom were systematically investigated by electron backscatter diffraction technology (EBSD) measurement, as well as the room-temperature mechanical properties at the different positions with composition gradient. The results indicate that as Mg and Si contents increase, the grain size decreases, improving the cube texture with recrystallization and weakening the S texture. The strength of 6016 aluminum alloy decreases with lower Mg and Si contents.

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Acknowledgements

This study was financially supported by the National Key Research and Development Program of China (No. 2016YFB0300901), the National Natural Science Foundation of China (Nos. U1708251 and U1608252), Liaoning Revitalization Talents Program (No. XLYC1807027), the Fundamental Research Funds for the Central Universities (No. N180905010) and JMRH Program (No. 2020JH2/10700003).

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Authors and Affiliations

  1. Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, China

    Xiang-Jie Wang, Wei Sun, Jun-Fu Chen, Fu-Yue Wang, Lei Li & Jian-Zhong Cui

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  1. Xiang-Jie Wang
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  2. Wei Sun
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  3. Jun-Fu Chen
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Correspondence to Xiang-Jie Wang.

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Wang, XJ., Sun, W., Chen, JF. et al. Microstructures and properties of 6016 aluminum alloy with gradient composition. Rare Met. 40, 2154–2159 (2021). https://doi.org/10.1007/s12598-020-01515-0

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  • DOI: https://doi.org/10.1007/s12598-020-01515-0

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