Abstract
A conventional multi-pass rolling is designed to form different microstructures in a Mg–2Ag alloy. The relationship between microstructure and mechanical property is investigated. The result shows that twin-induced nucleation plays a prominent role for the dynamic recrystallization (DRX) behavior of the rolled Mg–2Ag alloys. The DRXed grains distributed around elongated grains have random orientations but gradually turn to the concentrated orientation with strong basal texture when the rolling pass increases. The yield strength and ultimate tensile strength of rolled Mg–2Ag alloy gradually increase with increasing rolling pass. The elongation of rolled sample is gradually improved when the rolling pass increases from one to three, while a significant drop of elongation shows in the four-pass rolling sample. The strong basal texture, refined grains, high-density dislocations, and Ag segregation along grain boundaries are suggested to play a prominent role for enhancing the strength of Mg–Ag alloys, while the low-density dislocations, homogeneously fine-grained microstructure, and weak texture are critical for improving the ductility.
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Acknowledgements
This work was financially supported by the National Natural Science Foundation of China (Nos. 52171121, 51971151, and 51971053), the Liao Ning XingLiao Program (No. XLYC1907083), the Science Research Project of Liaoning Province Education Department (No. LQ2019002), the Fundamental Research Funds for the Central Universities (No. N2202020), and the Science Research Project of Liaoning Province Education Department (No. LJ2020015), Natural Science Foundation of Liaoning Province of China (2022-NLTS-18-01), the Open Foundation of Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education (HEU10202205).
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Zhang, H., Hao, H.L., Fu, G.Y. et al. Microstructure and Mechanical Property of Hot-Rolled Mg–2Ag Alloy Prepared with Multi-pass Rolling. Acta Metall. Sin. (Engl. Lett.) 36, 335–342 (2023). https://doi.org/10.1007/s40195-022-01462-y
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DOI: https://doi.org/10.1007/s40195-022-01462-y