The deformation behavior and microstructure evolution of duplex Mg-9Li-1Al alloy during superplasticity tensile testing

1st International Conference on Frontiers of Materials Synthesis and Processing

材料科学;化学

Liu, Meiduo^1 ; Zheng, Haipeng^2 ; Zhang, Tianlong^2 ; Wu, Ruizhi^2

Department of Environmental Engineering, Heilongjiang University of Technology, Jixi

158100, China^1

College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin

150001, China^2

关键词: Alpha phase;    As-extruded;    Beta-phase;    Deformation behavior;    Deformation process;    Equiaxed structures;    Micro-structure evolutions;    Properties and microstructures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/274/1/012113/pdf
DOI  :  10.1088/1757-899X/274/1/012113

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The superplastic mechanical properties and microstructure evolution of the duplex Mg-9Li-1Al alloy were investigated. The tensile testing results show that, the elongation of the as-extruded Mg-9Li-1Al alloy reaches 510% at 573 K with a strain rate of 2×10-4 s-1. During the deformation process, the strips of α phase break into equiaxed structure. This phenomenon can be attributed to a particular dynamic recrystallization, which suggests that the β phase can recrystallize in the α phase due to the small misfit degree between α phase and β phase.