Study on the precipitation behavior of strengthening phases in Al-Mg-Si alloy containing rare-earth elements La, Ce and Er

Dongqing Li; Jian Gu; Shuhui Zheng; Shengchun Liu; Jiajun Si

doi:10.1117/12.3011200

2 November 2023 Study on the precipitation behavior of strengthening phases in Al-Mg-Si alloy containing rare-earth elements La, Ce and Er

Dongqing Li, Jian Gu, Shuhui Zheng, Shengchun Liu, Jiajun Si

Author Affiliations +

Proceedings Volume 12919, International Conference on Electronic Materials and Information Engineering (EMIE 2023); 129190E (2023) https://doi.org/10.1117/12.3011200
Event: 3rd International Conference on Electronic Materials and Information Engineering (EMIE 2023), 2023, Guangzhou,, China

Abstract

The microstructure evolutions of Al-Mg-Si alloy with elements La, Ce, and Er were studied by optical microscopy, scanning electron microscopy, and transmission electron microscopy. The conductivity and mechanical properties of the Al-Mg-Si alloy were tested. The results showed that after adding the rare-earth elements La, Ce, and Er, the amount of precipitation phases within the grains of the Al-Mg-Si alloy decreased, and the precipitation phases migrated towards to the grain boundaries, resulting in coarsening of the grain boundaries. Moreover, rare-earth elements reacted with Si and Fe to form intermetallic compounds precipitated from the matrix, which greatly reduced the presence of Si elemental. The addition of rare-earth elements La, Ce, and Er could improve the conductivity and mechanical properties of the Al-Mg-Si alloy in some degree.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Dongqing Li, Jian Gu, Shuhui Zheng, Shengchun Liu, and Jiajun Si "Study on the precipitation behavior of strengthening phases in Al-Mg-Si alloy containing rare-earth elements La, Ce and Er", Proc. SPIE 12919, International Conference on Electronic Materials and Information Engineering (EMIE 2023), 129190E (2 November 2023); https://doi.org/10.1117/12.3011200

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