Microstructure and mechanical properties of as-cast and solid solution treated Mg−8Li−xAl−yZn alloys
In: Transactions of Nonferrous Metals Society of China, Jg. 31 (2021-04-01), S. 925-938
Online
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Zugriff:
The effects of Al/Zn ratio (mass ratio) on microstructure and mechanical properties of the Mg−8Li alloy were investigated. The results indicate that in the as-cast Mg−8Li−xAl−yZn (x+y=5) alloys (LAZ alloys), when the Al/Zn ratio is 1:4 and 2:3, the secondary phases are mainly AlLi and MgLiZn phases; when the Al/Zn ratio is 3:2 and 4:1, the secondary phases are mainly AlLi and MgLi2Al phases. The decomposition temperature of MgLiZn phase is about 300 °C and the decomposition temperatures of AlLi phase and MgLi2Al phase are higher (∼350 °C). Solid solution strengthening is the main factor for the improvement of strength of Mg−8Li−xAl−yZn alloys. The Mg−8Li−3Al−2Zn alloy after solution treatment at 350 °C for 4 h has the best comprehensive mechanical properties (yield strength of 272.5 MPa, ultimate tensile strength of 315.0 MPa and elongation of 3.4%) among the studied as-cast and solid solution treated Mg−8Li−xAl−yZn alloys.
Titel: |
Microstructure and mechanical properties of as-cast and solid solution treated Mg−8Li−xAl−yZn alloys
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Autor/in / Beteiligte Person: | Xinli, Liang ; Liu, Wencai ; Peng, Xiang ; Ding, Wenjiang ; Wu, Guo-hua ; Ji, Hao |
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Zeitschrift: | Transactions of Nonferrous Metals Society of China, Jg. 31 (2021-04-01), S. 925-938 |
Veröffentlichung: | Elsevier BV, 2021 |
Medientyp: | unknown |
ISSN: | 1003-6326 (print) |
DOI: | 10.1016/s1003-6326(21)65550-4 |
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