Effect of Y Addition on the Microstructures and Tensile properties of Sn-Bi-Al Alloys

Jandira Luzia Ndewongela Esteves; Xiuqing Zhang

doi:10.20944/preprints202310.0680.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 10 October 2023 / Approved: 11 October 2023 / Online: 11 October 2023 (10:51:00 CEST)

Compared to tin lead alloys, lead-free tin alloys have lower toxicity, making them more widely used. In this study, Sn-20Bi-0.3Al-xY solders alloys were prepared. The effects of the addition of Y on its microstructure, micro-hardness, wettability and mechanical properties was investigated. The result showed that the addition of Y had significant effect on the refinement of Sn-20Bi-0.3Al-xY. From the spreading tests results, Y increased the wettability of the solders, however when the fraction of Y gradually increased, the wettability reduced. The ultimate tensile and hardness of Sn-20Bi-0.3Al-xY solders alloys were increased as the content of Y increasing.

Lead-free solder; Sn-20Bi; wettability; mechanical properties; microstructure

Chemistry and Materials Science, Metals, Alloys and Metallurgy

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Effect of Y Addition on the Microstructures and Tensile properties of Sn-Bi-Al Alloys

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