Strengthening dual-phase Mg-Li alloy through precipitation control
| Autor: | Yuchuan Huang, Fangzhou Qi, Jiawei Sun, Yangyang Xu, Youjie Guo, Jiaxin Yu, Lingfan Yi, Xinmiao Tao, Guohua Wu, Wencai Liu |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Materials Research Letters, Pp 1-7 (2024) |
| Druh dokumentu: | article |
| ISSN: | 21663831 2166-3831 |
| DOI: | 10.1080/21663831.2024.2409232 |
| Popis: | Inherent low strength is the major limitation of Mg-Li alloys. Through precise control of precipitates, the cast Mg-8Li-3Al-2Zn alloy obtained a high specific ultimate tensile strength of 213 kN·m·kg−1. Precipitates evolution during non-isothermal aging was investigated: strip-like Mg3(Al, Zn) in β-Li → globular Mg3(Al, Zn) in β-Li →Mg/Li(Al, Zn) core–shell and nanoscale rod-like Mg3(Al, Zn) in β-Li + Laves phase in α-Mg. The short-term high-temperature aging results in the precipitation of Laves phase in α-Mg and the formation of nanoscale rod-like Mg3(Al, Zn) and Mg/Li(Al, Zn) core–shell phase in β-Li, achieving synergistic strengthening of the dual matrix phases. |
| Databáze: | Directory of Open Access Journals |
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