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

Xiao-feng Wang; Ming-xing Guo; Cun-qiang Ma; Jian-bin Chen; Ji-shan Zhang; Lin-zhong Zhuang

doi:10.1007/s12613-018-1645-0

Volume 25 Issue 8

Aug. 2018

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2018 > 25(8): 957-966

Xiao-feng Wang, Ming-xing Guo, Cun-qiang Ma, Jian-bin Chen, Ji-shan Zhang, and Lin-zhong Zhuang, Effect of particle size distribution on the microstructure, texture, and mechanical properties of Al–Mg–Si–Cu alloy, Int. J. Miner. Metall. Mater., 25(2018), No. 8, pp. 957-966. https://doi.org/10.1007/s12613-018-1645-0

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Xiao-feng Wang, Ming-xing Guo, Cun-qiang Ma, Jian-bin Chen, Ji-shan Zhang, and Lin-zhong Zhuang, Effect of particle size distribution on the microstructure, texture, and mechanical properties of Al–Mg–Si–Cu alloy, Int. J. Miner. Metall. Mater., 25(2018), No. 8, pp. 957-966. https://doi.org/10.1007/s12613-018-1645-0

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Research Article

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

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Corresponding author:
Xiao-feng Wang E-mail: wangxiaofeng@nbu.edu.cn
Received: 27 January 2018; Revised: 25 March 2018; Accepted: 27 March 2018

Abstract

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.
- Al-Mg-Si-Cu alloy;
- microstructure;
- texture;
- particle;
- mechanical property

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