Effect of rolling temperature on deformation behavior and mechanical properties of Mg-8Li-1Al-0.6Y-0.6Ce alloy

被引：13
作者：
Zhong F. [1 ]
Wang Y. [1 ]
Wu R. [1 ,2 ]
Zhang J. [1 ]
Hou L. [1 ]
Zhang M. [1 ]
机构：
[1] Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin
[2] College of Science, Heihe University, Heihe
来源：
Journal of Alloys and Compounds | 2020年 / 831卷
基金：
中国国家自然科学基金;
关键词：
Deformation behavior; Dynamic recrystallization; Mechanical properties; Mg-Li alloy; Temperature;
D O I：
10.1016/j.jallcom.2020.154765
中图分类号：
学科分类号：
摘要：
The effect of rolling temperature on deformation behavior and mechanical properties of Mg-8Li-1Al-0.6Y-0.6Ce (LA81-0.6Y-0.6Ce) alloy were studied. As the temperature increases, the grain size of β-Li phase decreases first and then increases. When the temperature is 250 °C, the as-rolled sheets have the optimal mechanical properties with the ultimate tensile strength of 219 MPa and the elongation of 35% due to grain refinement strengthening and dislocations strengthening. With the increase of temperature, the dynamic recrystallization mechanism of α-Mg phases is transformed from continuous dynamic recrystallization (CDRX) to discontinuous dynamic recrystallization (DDRX), while that of β-Li phases is always DDRX without transformation. © 2020 Elsevier B.V.
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