Abstract
To overcome the trade-off between strength and ductility, a low-cost method comprising room-temperature compression followed by artificial aging and compressive deformation was applied to a commercial AZ61 alloy. The goal of this work was to regulate the microstructure rather than refine the grains. For this purpose, fragmented precipitates decorating the boundaries of narrow twins and stable networks developed by two non-basal slip systems were achieved. With this novel microstructure, a highly improved yield strength of almost 120 MPa was realized with slightly decreased ductility. It is believed that this provides a novel orientation for rationally designing strength and ductility in age-hardenable Mg alloys by tailoring the precipitate scale and dislocation configuration.
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Acknowledgments
The authors gratefully acknowledge the financial supports received from the National Natural Science Foundation of China (Grant No. 51974376), the Natural Science Foundation of Hunan Province, China (Grant No. 2021JJ20063), and the Natural Science Foundation of Shanxi Province, China (Grant No. 20210302123163).
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Chen, T., Hu, S., Li, S. et al. Improving the Mechanical Properties of an Age-Hardenable Magnesium Alloy via Regulating Precipitate Scale and Building Dislocation Configuration. Metall Mater Trans A 54, 4770–4778 (2023). https://doi.org/10.1007/s11661-023-07198-3
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DOI: https://doi.org/10.1007/s11661-023-07198-3