Enhanced mechanical and corrosion properties of grain refined Mg-2.0Zn-0.5Zr-3.0Gd alloy

被引：4
作者：
Yao, H. [1 ,2 ]
Li, H. [1 ]
Liu, Y. [1 ]
Shi, H. [1 ]
机构：
[1] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471023, Henan, Peoples R China
[2] Collaborat Innovat Ctr Nonferrous Met Henan Prov, Luoyang 471023, Henan, Peoples R China
来源：
KOVOVE MATERIALY-METALLIC MATERIALS | 2020年 / 58卷 / 06期
基金：
中国国家自然科学基金;
关键词：
magnesium alloys; microstructure; mechanical properties; corrosion; extrusion; HIGH-TEMPERATURE DEFORMATION; MAGNESIUM ALLOYS; MICROSTRUCTURE; BEHAVIOR; RESISTANCE; EXTRUSION; BIOCORROSION; TEXTURE; CAST;
D O I：
10.4149/km_2020_6_409
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure, mechanical and corrosion properties of Mg-2.0Zn-0.5Zr-3.0Gd alloys in four different states (as-cast, solid solution, as-cast extrusion, and solid solution extrusion) were studied. Results show that the microstructure of alloys in different states is mainly composed of equiaxed cr-Mg matrix and (Mg, Zn)(3)Gd precipitates with different sizes. Among them, a small number of nano-sized (Mg, Zn)(3)Gd precipitates with a semi-coherent relationship with the matrix appeared in the solution-treated alloy. A large number of nano-elliptical Mg2Zn11 precipitates was found in the two extruded alloys. The temperature for dynamic crystallization of solid solution extruded alloy is higher than that of as-cast extruded alloy. The extruded solution-treated alloy exhibits the best mechanical properties and anticorrosive ability, which could be attributed to a more homogeneous microstructure, grain refinement, and the presence of nanometric secondary phase particles. Grain refined solution-treated alloy could have potential applications in metallic biomaterials.
引用
收藏
页码：409 / 421
页数：13
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