Effect of Gd and Y Addition on Hot Compression Behavior and Workability of Mg-10Li-3Al-0.5Zn Alloy

被引：0
作者：
Zeng, Gang [1 ,2 ]
Wu, Lianmei [3 ]
Kang, Xinkai [1 ,2 ]
Hu, Wenxia [3 ]
Fang, Meng [1 ,2 ]
Xiao, Hongchao [1 ,2 ]
Li, Fei [3 ]
Guo, Zihang [1 ,2 ]
机构：
[1] CAS Changsha Adv Mat Inst Co Ltd, Hunan Prov Engn Res Ctr Wrought Magnesium Alloys &, Changsha 410205, Peoples R China
[2] CAS Changsha Adv Mat Inst Co Ltd, Hunan Prov Technol Innovat Ctr New Light Alloy Mat, Changsha 410205, Peoples R China
[3] Beijing Inst Elect Syst Engn, Beijing 100854, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2025年
关键词：
Mg-Li alloys; microstructure; RE element; secondary phase; workability; MG-LI ALLOYS; MECHANICAL-PROPERTIES; CONSTITUTIVE ANALYSIS; DEFORMATION-BEHAVIOR; CORROSION BEHAVIOR; MICROSTRUCTURE; PERFORMANCE; MAGNESIUM; SYSTEM; ENERGY;
D O I：
10.1007/s11665-025-10891-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To investigate the effect of rare earth (RE) elements (Gd or Y) on the workability of the Mg-10Li-3Al-0.5Zn (LA103, wt.%) alloys, the constitutive equations of these alloys were constructed and the plastic processing maps were drawn. The Al2RE phases were formed after the addition of RE elements at the expense of the quantity of the other non-RE secondary phases. A large number of AlLi phases are dissolved into the matrix after homogenization, accompanied by the spheroidization and refinement of the alpha-Mg phases. The activation energy of deformation (Q) of the LA103 alloy is hardly affected or slightly reduced by the addition of 0.5Gd or 0.5Y, respectively. The optimal processing parameters of all the alloys locate in the high temperature-low strain rate domains, which correspond to the uniform distribution of punctate AlLi phases and the reduction of the spherical AlLi phases. The addition of RE element enlarges the high efficiency zones in the DMM processing maps. However, the increase of compression strain barely changes the high efficiency zones but enlarges the instable domains.
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页数：12
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