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Microstructure, cold rolling, heat treatment, and mechanical properties of Mg-Li alloys
Alternative TitleMicrostructure, cold rolling, heat treatment, and mechanical properties of Mg-Li alloys
Ji Haibin; Yao Guangchun; Li Hongbin
2008
Source PublicationJOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
ISSN1005-8850
Volume15Issue:4Pages:440-443
AbstractThe magnesium-lithium (Mg-Li) alloy exhibits two phase structures between 5.7wt% and 10.3wt% Li contents, consisting of the alpha (hcp) Mg-rich and the beta (bcc) Li-rich phases, at room temperature. In the experiment, Mg-5Li-2Zn, Mg-9Li-2Zn, Mg-16Li-2Zn, Mg-22Li-2Zn, Mg-5Li-2Zn-2Ca, Mg-9Li-2Zn-2Ca, Mg-16Li.-2Zn-2Ca, and Mg-22Li-2Zn-2Ca (wt%) were melted. During the melting process, the flux, which was composed of lithium chloride (LiCl) and lithium fluoride (LiF) in the proportion of 3:1 (mass ratio) and argon gas were used to protect the alloys from oxidation. The microstructure, mechanical properties, and cold-rolling workability of the wrought alloys were studied. The crystal grain of the alloys (adding Ga) is fine. The hardness of the studied alloys decreases with an increase in element Li. The density of the studied alloys is in the range of 1.187 to 1.617 g/cm(3). The reduction of the Mg-16Li-2Zn and Mg-22Li-2Zn alloys can exceed 85% at room temperature. The Mg-9Li-2Zn-2Ca alloy was heat treated at 300 degrees C for 8, 12, 16, and 24 h, respectively. The optimum heat treatment of the Mg-9Li-2Zn-2Ca alloy is 300 degrees Cx12h by metallographic observation and by studying the mechanical properties of the alloys. (c) 2008 University of Science and Technology Beijing. All rights reserved.
Other AbstractThe magnesium-lithium (Mg-Li) alloy exhibits two phase structures between 5.7wt% and 10.3wt% Li contents, consisting of the a (hcp) Mg-rich and the β (bee) Li-rich phases, at room temperature. In the experiment, Mg-5Li-2Zn, Mg-9Li-2Zn,Mg-16Li-2Zn, Mg-22Li-2Zn, Mg-5Li-2Zn-2Ca, Mg-9Li-2Zn-2Ca, Mg-16Li-2Zn-2Ca, and Mg-22Li-2Zn-2Ca (wt%) were melted.During the melting process, the flux, which was composed of lithium chloride (LiCI) and lithium fluoride (LiF) in the proportion of 3:1 (mass ratio) and argon gas were used to protect the alloys from oxidation. The mierostructure, mechanical properties, and cold-rolling workability of the wrought alloys were studied. The crystal grain of the alloys (adding Ga) is fine. The hardness of the studied alloys decreases with an increase in element Li. The density of the studied alloys is in the range of 1.187 to 1.617 g/cm3 The reduction of the Mg-16Li-2Zn and Mg-22Li-2Zn alloys can exceed 85% at room temperature. The Mg-9Li-2Zn-2Ca alloy was heat treated at 300℃ for 8, 12, 16, and 24 h, respectively. The optimum heat treatment of the Mg-9Li-2Zn-2Ca alloy is 300~Cx12h by metallographic observation and by studying the mechanical properties of the alloys.
KeywordMg-Li alloy Mg-Li-Zn alloy cold rolling heat treatment microstructure mechanical properties
Indexed ByCSCD
Language英语
CSCD IDCSCD:3383319
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/152957
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
Ji Haibin,Yao Guangchun,Li Hongbin. Microstructure, cold rolling, heat treatment, and mechanical properties of Mg-Li alloys[J]. JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING,2008,15(4):440-443.
APA Ji Haibin,Yao Guangchun,&Li Hongbin.(2008).Microstructure, cold rolling, heat treatment, and mechanical properties of Mg-Li alloys.JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING,15(4),440-443.
MLA Ji Haibin,et al."Microstructure, cold rolling, heat treatment, and mechanical properties of Mg-Li alloys".JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING 15.4(2008):440-443.
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